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EZT-570S User Manual

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9.1 Serial

Communications

The EZT-570S uses Modbus RTU protocol for serial communications. The EZT-570S communication
address and parity can be changed on the User communications screen located under the system
settings menu.

Figure 9-2 Modbus Settings

The EZT-570S is set by default for an address of 1 and even parity for use with CSZ’s EZ-
View software package. If another software package is being used, or you are writing your
own custom application, see the EZT-570S User Communications Reference Manual for
instructions and information on command structure and protocol usage.

9.1.1

Adjusting Modbus Serial Communication Settings

The Modbus serial communication settings allow the EZT-570S to be used on a single (RS232) or
multi-drop (RS485) serial link. The settings must be set to match that of the host computer and vice
versa. The serial port settings of the EZT-570S are fixed other than the controller address and parity.
The host computer’s serial port must be set to match the fixed EZT-570S port settings:

Address:

1-31 (user selectable)

Baud Rate:  9600
Data Bits:  8
Stop Bits:   1
Parity:

none, odd, even (user selectable)

The

Modbus Address

is used to identify the EZT-570S on the serial link. When a multi-drop

connection is used, each controller on the link must have a different address so that each one can be
identified separately. If two or more devices have duplicate addresses, communications with those
devices will fail because they will all try to respond to the same message. For single controller
connections, the address only needs to match that of the commands being sent from the host
computer.

The

Parity

setting is an extra level of error checking that the serial ports of devices can use to verify

that the data received is what was sent. All devices on the serial link must be set to the same parity
setting or they will not transmit and receive data the same way. Thus, communications will fail
between devices that do not have the same settings.

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Содержание EZT-570S

Страница 1: ...EZT570S User Manual RevC doc 450 V1 2 730 V1 0 EZT 570S Environmental Chamber Controller User Manual ...

Страница 2: ...enu 16 1 4 4 2 Icon Slide Page Based Offline Menu 17 1 5 Notifications 18 2 Monitoring 19 2 1 Main Loop View 19 2 2 Overview 20 2 3 Trends 21 2 3 1 Trend Setup 22 2 4 Alarm Monitor 23 2 4 1 Pumpdown 23 2 4 2 Help For Alarms 24 2 5 Alarm History 25 2 6 System Status Monitor 26 3 Manual Operation 27 3 1 Set Point Adjustment 27 3 2 Manual Operation Turning the Chamber On Off 28 3 2 1 Standard Chamber...

Страница 3: ...3 5 1 Recovery 53 5 2 Set Point Limits 54 5 3 Event Names 55 5 4 Alarms 56 5 4 1 Set Points and Alarm Message 57 5 5 Product Control 59 5 5 1 Using Product Control 60 5 5 1 1 Should I Use Product Control for My Test 60 5 5 1 2 Implementing Product Control on Dead Loads 61 5 5 1 3 Implementing Product Control on Live Loads 62 5 5 1 4 Considerations When Applying Product Control 63 5 5 1 5 How do I ...

Страница 4: ...rvice Options 96 8 2 Degrees C F Selectio 97 8 3 Clock Settings 98 8 3 1 Time Options 98 8 3 1 1 Local Time Server Settings 99 8 3 2 DST Settings 99 8 4 Language 100 8 5 Special Settings 101 8 6 Hardware 102 8 6 1 Analog Inputs 102 8 6 1 1 Enabling Remote Set Point Inputs 103 8 6 1 2 Analog Input Wiring 104 8 6 2 Analog Outputs 105 8 6 2 1 Analog Output Wiring 107 8 6 3 Digital Inputs 108 8 6 3 1 ...

Страница 5: ... Networking Practice 130 9 3 2 Configuring the EZT 570S Network 131 9 3 2 1 Obtaining the EZT 570S MAC Address 132 9 3 2 2 Setting a Static IP Address 133 9 3 3 Using the Web Server 136 9 3 4 Using the VNC Server 138 9 3 4 1 Recommended VNC Viewer Settings PC MAC 138 9 3 4 2 Recommended VNC Viewer Settings for Tablets 140 9 3 4 3 Accessing the EZT 570S through a VNC Viewer 141 10 Diagnostics 143 1...

Страница 6: ...pment from damage Pay very close attention to all warnings that apply to your chamber 1 1 1 Device Under Test DUT Safety Information The environmental chamber is equipped with high heat limits and or safety devices These devices are installed to protect the chamber from exceeding design limits These devices remove power from the chamber s heaters only and DO NOT remove power from the device under ...

Страница 7: ...o all EZT 570S data view only a VNC interface for remote control and monitoring and an NTS clock all available via a local Intranet connection wired or wireless or the World Wide Web using standard software like Microsoft s Internet Explorer The EZT 570S provides a rich set of tools for control interaction and data analysis Views include system overviews trends alarms automatic programs as well as...

Страница 8: ... is in i e security data logging setup etc The information help icon will display text based help associated with the current screen Help is available in 28 languages based on the user selection in the offline setup of section of the EZT 570S The home icon will return the user to the main view from anywhere in the EZT 570S application The alarm icon will appear and flash when a new system alarm oc...

Страница 9: ...e available menu items are dependent upon the options installed on the chamber Not all of the menu items shown may be available on chamber The following information is provided as an overview of the full navigational menus for the EZT 570S Do not use any sharp or metal objects on the touch screen as they may damage the surface Oil and or solvents on hands and fingers will mar the touch screen surf...

Страница 10: ...ides access to the program Entry and Status views It also provides access to the program Plot screen which allows the user to view the entire program under edit in either a graph or list format The System menu provides access to the EZT 570S controller settings These include loop set point entry limits alarm settings communication settings email setup as well as access to offline settings for date...

Страница 11: ...s It also provides access to the EZT 570S Settings and data Logging sections Slide page 2 provides access to the program Entry and Status views It also provides access to the Plot Program screen which allows all steps of the current program under edit to be viewed in graph or list format Slide page 3 provides access to security settings Audit trail User information Password editing and user Login ...

Страница 12: ...er Event Names power recovery and Navigation The Comms menu provides access to the User communications settings for the web page VNC server and Modbus user communications as well as settings for the optional Barcode reader The Email menu provides access to the Settings screen for the email server to send SMS text messages and or emails on alarm It also allows the user to compose and send messages ...

Страница 13: ...mail server settings and messaging It also includes access to the communications settings for the web page VNC server and user Modbus communications Slide page 2 provides access to the EZT 570S offline setup screens which provide the user with the ability to adjust the date time calibrate the touch screen configure digital and analog IO etc It also includes access to the optional Barcode reader an...

Страница 14: ...creens The File menu provides functions for opening and deleting historical data files The Data menu provides access to the main Data screen for starting and stopping data logging and to the log point Assignment screen where the user can select which items are to be logged to the history file The History menu provides functions for viewing historical data files in graphical format The Utilities me...

Страница 15: ...ata file functions are provided for Opening and Deleting historical files as well as viewing setting data file Annotations and digital Signatures The Plot Setup and Plot icons provide access to the data viewer options Slide page 2 provides access to the FTP WAN back up settings and the memory check utility for viewing the available system storage memory space ...

Страница 16: ...ion cannot be interrupted due to an active test do not enter offline mode 1 4 4 1 Text Based Offline Menu The View menu provides navigation back to the online system settings menu and to the Service Counters and Service Options screens The Setup menu provides access to the temperature Units selection Clock Language selection and Special settings The Hardware menu provides configuration access to t...

Страница 17: ...ce Counters and Service Options Display settings and Language selection It also provides access to the About and Exit application screens Slide page 2 provides configuration access to the optional EZT 570S digital and analog inputs and outputs It also provides access to the monitor input Offset screen Special settings and the Configuration import export utility ...

Страница 18: ...point if option installed on chamber Automatic program status including name of running program Defrost operational status if chamber equipped with defrost Active alarm status including the most recent alarm Data logging status including active file name and the length and logging rate set Security status including the current user Audit trail active inactive status Web server active inactive stat...

Страница 19: ...70S provides real time trends Eight user configurable trends are provided with up to eight user selectable plot points each In addition the EZT 570S provides system status and alarm views to inform the user of any issues that arise with chamber operation 2 1 Main Loop View The Main loop view can be configured to show from one to five control loops and or process monitor inputs at a time The number...

Страница 20: ... an automatic ramp soak program is in operation The Manual Operation button displays the manual event control window This provides access to all of the chamber and customer events allowing the operator to turn the chamber and other systems on and off directly from the main screen See section 3 2 Manual Operation for more information The Program Operation button displays the automatic ramp soak pro...

Страница 21: ...period to be shown Each buffer can hold a total of 720 readings for each of the selected channels to plot The update rate can be calculated by the formula time period in minutes 60 720 Note that for time periods less than 72 minutes the update rate will be held to a minimum of 6 seconds Thus the update rate will vary from a minimum of 6 seconds for time periods of 72 minutes or less up to a maximu...

Страница 22: ...at 2 am so with a buffer length of 4 hours for example the trend data will display accurately at 6 am 2 3 1 Trend Setup To configure a trend press the Setup button to display the trend setup screen To assign plot channels to the trend simply touch the on off button for the desired items in the list to select them Select the left or right vertical axis for each item by selecting the item in the lis...

Страница 23: ...ondition has cleared If the chamber does not restart upon reset of the alarm verify that all manual reset safeties have been reset and the alarm condition has been cleared by pressing the Clear button This will remove all alarms that have been reset from the list If the alarm is still present the alarm condition still exists and must be corrected in order for the chamber to resume operation Figure...

Страница 24: ...ify the operator of this condition The chamber will not operate when pumpdown is disabled Pumpdown will automatically reset after the main power has been on for a period of 4 hours or it can be reset at any time by pressing the Pumpdown button If your chamber is equipped with pumpdown main power should remain on at all times If power is removed for extended periods of non use DO NOT reset pumpdown...

Страница 25: ... Alarm file names are listed as month_day_year The Open file button will display a dialog box where the user can select any alarm file to view If no alarms occurred on a given day an alarm file will not be created for that day Figure 2 9 Alarm History The send email icon provides the ability to send a copy of the currently opened alarm file to any of the email addresses entered into the EZT 570S W...

Страница 26: ...nt beeping of the chamber s audible alarm The alarm icon will also flash Pressing the alarm icon while one of the alerts is active will automatically display the Monitor screen for user convenience The alert can then be silenced through the use of the Reset button See Section 10 Diagnostics for alarm codes and corrective actions If an alarm is currently active or there is an alarm that had previou...

Страница 27: ...erate the chamber in this mode 3 1 Set Point Adjustment Figure 3 1 Single Set Point Adjustment To adjust a set point 1 Select either the Main loop view or Overview screen from the home View menu 2 Touch the set point for the desired loop on the Main screen or select the loop row from the list on the Overview screen The numeric keypad will be shown Enter the desired set point value and press the En...

Страница 28: ...be turned on and off at set time intervals Figure 3 3 Manual Event Control Overview Figure 3 3 Manual Event Control Main To turn the chamber and optional events on off 1 Select Overview from the home View menu or press the Manual Operation button on the Main loop view screen 2 Touch the on off button for each event to toggle it on and off 3 Press the Done button on the Manual Operation window once...

Страница 29: ...ir temperature the corresponding system status Monitor indicator RH TMP DISABLE will illuminate to indicate that this condition is present Minimum Humidity Limitations The standard humidity option provides a lower limit of humidity control relating to a 4 4 C 40 F dewpoint The dewpoint refers to the temperature at which the air contains the maximum amount of moisture it can hold When a surface dro...

Страница 30: ...iary cooling system utilizes LN2 or CO2 as a boost cooling medium to assist the refrigeration system in lowering the chamber air temperature It is an inexpensive method for fast cooling transitions without having to make the investment in a high horsepower refrigeration system that may rarely be used It can also be used as the primary cooling source for ultra low temperature operation on chambers ...

Страница 31: ...S controller based on the air temperature and humidity set points When required to obtain low humidity levels the frozen coil and dry air purge systems will start in order to achieve the target set point When no longer required they will automatically turn off This level of operation also provides the benefit of being able to manually use the dry air purge system by turning the purge event on and ...

Страница 32: ...nd cold chambers however these chambers are equipped with a center cold chamber and two outer hot chambers Since DTS chambers shuttle product from left to right and vice versa the events describe the transfer positions as XFR LEFT and XFR RIGHT Liquid bath thermal shock TSB chambers typically include a third position which is an ambient zone The ambient zone removes the basket from the liquid bath...

Страница 33: ...pped with a product control loop The PRODUCT CONTROL event can be used to enable disable product control programmatically through a running ramp soak program or just manually via the manual event screen See Section 5 5 Product Control for more information on settings and use of this feature 3 2 4 Customer Events Option The EZT 570S controller has the ability to control up to 15 event output relays...

Страница 34: ...g edited to USB memory stick Edit menu button Copy Step Copies current step data including events Paste Step Pastes previously copied step data to the current step Same Events Copies and pastes current step events to all following steps G Soak Limits Displays the guarantied soak limits screen AutoStart Displays the auto start settings screen Insert step button Inserts a step after the current step...

Страница 35: ...m will always start from the same conditions each time it is run 3 For each additional step required press the Insert button to add a step Make any required changes to the step time set points events and wait for conditions 4 Once entry is complete press the File menu button and select Save to save the program Programs can be saved with names of up to 16 characters long However the EZT 570S only u...

Страница 36: ...me of zero can be entered for a step to implement an immediate set point change This will cause the chamber to go to the set point as quickly as possible When used in conjunction with a wait condition on the following step there is no need to know the time it takes for the chamber to achieve set point The wait can be used to trigger the next step typically a soak so that the desired soak time is a...

Страница 37: ...current step Thus as steps are added the new step is automatically a soak step By simply changing the set point for a loop the step becomes a ramp step Adjusting the time length of the step will then vary the ramp rate 4 1 2 1 Entering Ramp Rate In order to enter a ramp rate you can either calculate the time it will take to go from the previous step s set point to the current step s set point at t...

Страница 38: ... for the step to a different loop you must clear an existing ramp rate entry Entering step time will clear any existing ramp rate entry on the step Ramp rate is a function of time and difference in set point so the length of time for the step can be entered or a ramp rate can be entered not both When entering ramp rate on temperature for example it sets a length of time for the step based on the r...

Страница 39: ...e need to set them manually If an event is not required on the new step then only the one event would need to be turned off The EZT 570S also provides the Same Events function from the Edit menu button When selected all event selections of the current step will be copied to all following steps This can be useful when making copies of programs For example if you wish to create a temperature only pr...

Страница 40: ...aranteed soak should be used on soak steps to make sure that the process stays at the desired set point within the soak band for the full time duration of the step 4 1 5 Using Wait For The wait function is a powerful tool for pausing a program until a particular process variable reaches a predefined set point This differs from the guaranteed soak function by being a single shot monitor With the gu...

Страница 41: ...ing the wait state the selected process input must arrive at or cross the set point Wait SP in order for the program to resume operation The monitor input and digital input selections are only available if the option is available on your chamber When using a digital input as a wait for selection the digital input must be configured as a wait input If it is not configured as a wait input the progra...

Страница 42: ...ll only jump to this step if the cycle count is greater than zero Cycle Count Sets the number of jumps that will be made from the step Once all jumps have been made the program will continue on to the next step in sequential order The cycle count defines how many jumps will be made Thus if you wish to perform 10 cycles within a program your cycle count will be set to 9 10 minus the 1 performed pri...

Страница 43: ...time must be entered Enter the month day year and time of day in hours and minutes for when the program is to start The day of week is not required to be set It is not used for this function When auto start by day is selected only the day of week and time is required to be entered The date settings are ignored The EZT 570S simply looks for the day of week and time to begin the program The time is ...

Страница 44: ... bands These limits apply to each step in the program and only need to be set once Figure 4 8 Guaranteed Soak Limits To change a limit touch the desired loop in the list enter the new limit setting on the numeric keypad and press Enter when finished The new limit value will then be shown in the list view for the selected control loop If soak limit is set too tight i e a very small deviation value ...

Страница 45: ...ram Plot 4 2 1 Program List The program Plot screen also provides the user with the option to view all program steps in a scrollable list format by pressing the List button To revert back to the plot view press the Plot button Figure 4 10 Program List The list will display each step of the program including time jump entry loop set points and programmed events If a wait condition is programmed for...

Страница 46: ...e programs stored on the EZT 570S via Select The status of the current program is displayed at the top of the window If a program is not in operation the current name of the program selected to run will be shown In order to start a ramp soak program it must first be loaded into the EZT 570S control module This is done automatically upon new program selection or when running the program under edit ...

Страница 47: ...ior to the program being reloaded and run To stop a program select Stop or Off from the Program Operation window When a program is stopped the loops will return to single set point static mode operation The Stop selection stops the running program but leaves the set points and events at their current values when the program stops This allows you to stop a program and continue running the chamber i...

Страница 48: ...the current step Cycles indicates the number of jumps remaining for the step if any The loop set points for the current step can be viewed at the top of the screen by pressing the left and right scroll buttons to cycle through each loop Note that the set points shown here are the target set points not the actual set points the loops are controlling to To view the actual control set point see the M...

Страница 49: ... program Status screen is enabled Figure 4 14 Adjust Step Time When selected the numeric keypad will be shown Enter the time adjustment in hours and minutes and press Enter when finished The time remaining in the step will be adjusted by the total time entered Once complete resume the program When adjusting the time of a ramping step the ramp rate will be altered for the remainder of the step The ...

Страница 50: ... 50 4 5 Program Worksheet This table can be used as a template for creating programs prior to entering them on the EZT 570S It can also be used as a tool for quick checks to make sure all of the entries were made correctly ...

Страница 51: ...the chamber running and conditioning product as desired prior to performing ramping sequences of the program This eliminates the need for the operator to set the chamber to the proper set points prior to starting a program For instances where only a single ramp is required or a remote software package is being used to send ramping sequences to the EZT 570S the program operation was designed to exc...

Страница 52: ...ake the EZT 570S a minute to process all of the steps in order to calculate this time Programs can easily reach into the 1000 s of steps when multiple jumps are used and it takes time to process through all of the step data 8 Why has the program not completed its run by the stop date given when I started it The estimated stop date provided by the EZT 570S for the program is a calculated value base...

Страница 53: ...overy Off Select Off to have the chamber default to the off state on power up If a ramp soak program was active prior to the power outage the program will also be stopped Hold Select Hold to have the chamber return to operation at the same point it was prior to the power outage If a ramp soak program was running the program will still be active however it will remain in hold until manually set to ...

Страница 54: ...ue that exceeds the survivability limits of a product being tested reducing the risk of product damage Figure 5 2 Set Point Limits The set point limits are factory set for the maximum safe operating range of the chamber These limits are locked out from user adjustment by default at the factory User adjustment of these limits which exceed those limits set by the factory may result in damage to syst...

Страница 55: ...stomer Event 1 to Customer Event 15 These will be shown in all events lists even if the optional digital outputs are not present If you do not want to see the customer events in manual operation or program step event lists you can remove them by changing the name of the event to a single dash This removes the event name from all list views Any customer event or combination of events can be hidden ...

Страница 56: ...bsolute An absolute alarm uses one or two set points to define an alarm condition An absolute alarm can be set for high only low only or both high and low Deviation A deviation alarm uses one or two set points that are defined relative to the control set point High and low alarm set points are calculated by adding and or subtracting offset values from the control set point If the set point changes...

Страница 57: ...ill be shown in order to provide a visual alert to the operator that user intervention is required Shut Down If shut down is turned off the alarm will not affect the operation of the chamber If shut down is turned on the chamber will turn off all systems in an alarm condition If an automatic ramp soak program is operating the program will also go into hold Digital Output Assignment If the EZT 570S...

Страница 58: ... the alarm low set point Low The alarm low set point defines the process value that will trigger a low side alarm It must be lower than the alarm high set point Differential The differential often referred to as alarm hysteresis or dead band defines how far the process must return into the normal operating range before the alarm can be cleared The Alarm Message is the text notification that appear...

Страница 59: ...he composition of the product material whether it is a natural insulator or conductor also affects this rate of heat transfer The product control feature can be used to speed up this process and insure that your part reaches the desired temperature as quickly as possible It does this by monitoring the part temperature through the product control loop and based on the set point for product temperat...

Страница 60: ...bled by the user The uses event selection for enable disable allows product control to be turned on and off during different steps of a ramp soak program or manually from the Overview screen or Manual Operation window on the Main view without having to disable it altogether This can be a useful function for varying product testing in which specific programs are used for different product tests It ...

Страница 61: ... situation cannot be predetermined However the following sections provide guidance on where to start They provide assistance for the two known types of product loads that can be placed within a chamber a dead load or a live load 5 5 1 2 Implementing Product Control on Dead Loads A dead load is a term describing a product that does not generate heat Any product can be a dead load even if it is an e...

Страница 62: ...can set the upper and lower product control set points to 75 and 25 The air temperature loop will then be sent a set point between 75 and 25 regardless of what the product set point is This will maximize the rate of change of the product temperature by allowing the air temperature set points to reach maximum limits However once the product reaches set point the larger air temperature control range...

Страница 63: ...percentage of the total water it could hold at that temperature If your test requires both humidity and temperature control product control may have a detrimental effect on the chamber s ability to control humidity Since the air temperature varies in order to maintain product temperature humidity control will be affected by the difference in air temperature required to get the product to temperatu...

Страница 64: ...ge is from zero to 10 0 C 18 0 F Note that a limit setting of zero will have no limiting effect on rate of rise Dewpoint Read only parameter which displays current dewpoint of the air within the chamber Dewpoint Limit Read only parameter which displays the maximum dewpoint that can be maintained without causing condensation on product Monitor Mode Selections The list of selections on the left of t...

Страница 65: ...rculators shut down and the hot gas solenoid opens The hot gas flows through the refrigeration coil and melts the ice Once the coil reaches a preset temperature limit typically 10 C 50 F defrost terminates The refrigeration system then precools the coil prior to turning on the air circulators This further prevents the warming of the chamber s contents Defrost can be set to run automatically or und...

Страница 66: ...ve that each EZT 570S have a different VNC address If multiple chambers have the same VNC address network errors may result causing the VNC server to shut down or cause the EZT 570S to lock up and become non responsive requiring the unit to be power cycled in order to return to normal operation The VNC Device Name field is used to enter a name up to 35 characters that can better identify the chamb...

Страница 67: ...lly load the program and prompt the user to start it If the user presses Yes to start the program it will be downloaded to the control module and will begin operation on the first step When the Annotation option is turned on the scanned data will be written to the currently running data log file as operator event The Prefix field allows the user to enter up to 16 characters that will then be used ...

Страница 68: ...ll name prefix scanned data can exceed the maximum allowed file name length for a program If the EZT 570S does not find an exact match it will ignore the scan Thus it is up to the user to insure that a matching program exists for each bar code that will be scanned If an automatic ramp soak program is already in operation or a program download is active from a remote PC the EZT 570S will ignore any...

Страница 69: ... to add the user to the list Figure 5 11 Create Email Address The SMS address is specific to the service provider Each service provider has their own unique address however the phone number is always the name for the address entry Below are common examples for some of the more common cell phone providers There are internet sites with this information that cover most of the providers or when in dou...

Страница 70: ... the user from the list Figure 5 12 Email Addresses 5 10 3 Email Settings The Settings tab provides access to the email server configuration which is how the EZT 570S is able to connect and send email messages over its Ethernet connection Each field may have up to 50 characters Figure 5 13 Email Settings These settings may require authorization and or assistance from your system administrator Cont...

Страница 71: ...e EZT 570S access Contact your system administrator for assistance Port This field is for entering the network port that the email client is to use when accessing the email server in order to send emails The default port number is 25 The port can be set to a value between 0 and 65535 Contact your system administrator for assistance Email Subject This field is used to enter a subject line for email...

Страница 72: ...u are finished entering the message press the Enter button The completed message will then be shown in the message window Press the Send button to select the email recipients you wish to receive the message and send the message Figure 5 15 Select Email Address Use the drop down menu to select from the available list of email addresses and press the Select button to add that recipient to the list M...

Страница 73: ...e ability to choose the screen that will be displayed when pressing the Home icon To choose the home view press the button for the desired screen either the Main loop view or Overview screen The selections are mutually exclusive so when one selection is made the other will be de selected The button indicator for the active selection will illuminate to show the current selection The Loops to View o...

Страница 74: ...ll cycle through each loop available By pressing either button the previous or next loop will appear in sequential order When the first or last loop is reached the EZT 570S will automatically wrap around to the beginning or end of the list to show the next loop If the system has only one loop the arrow buttons will not be shown The Set button allows the user to adjust the loop set point without ha...

Страница 75: ...r TI will slow down the control response while smaller values will speed up the reset action Having too large of a value can make the chamber sluggish in response to process changes while too small of a value can cause oscillation A larger TD factor can help reduce overshoot however it can also make the output respond too rapidly to small changes in the process and prevent the chamber from every r...

Страница 76: ...n clearer A supervisor logs on the system The supervisor then steps away from the system to take a phone call but does not log out before leaving If another user tries to change the temperature control set point the system will require another login by an authorized user for that level before the control set point is actually changed This provides an extra level of protection to make the system mo...

Страница 77: ...nistrator access in order to turn on security There is no back door to the system If the password is lost or forgotten you must contact our Service Department for support 6 2 Viewing Users The Users tab provides the administrator with the ability to view information on each user entered into the system Password information is not available The user can be deleted from this tab and a new password f...

Страница 78: ...nd Administrator To enable or disable specific program functions user rights for each user level select the user right from the list and press the corresponding on off button for the user level you want to change access rights for If the button is set to on user access will be enabled for the user group Figure 6 4 User Access Rights User access for Security cannot be disabled for the administrator...

Страница 79: ...te files may be copied from system with USB file transfer utilities Delete see description data files automatic programs note files may be deleted with File Utilities Program Edit Program Entry no data entry or access to Events or Step SP Time fields or G Soak Limits AutoStart can t insert delete copy paste step USB Data Logging Utilities USB allows USB memory stick to copy delete data alarm progr...

Страница 80: ...Analog Inputs System Settings Offline Settings Hardware Analog Inputs configure Analog Input s to act as remote set points for specific loop controls Analog Outputs System Settings Offline Settings Hardware Analog Outputs configuration of PV SP or out retransmission from specific loop controls Digital Inputs System Settings Offline Settings Hardware Digital Inputs configure Digital Inputs Digital ...

Страница 81: ...a user the user will be required to change their password before access to the system is permitted A user can change their password at any time even if aging is not used by selecting Password from the main security menu When enabled Verification requires that the logged in user must log in again before the process value will actually be changed Audit Trail is a global setting that turns the audit ...

Страница 82: ... for that day Figure 6 6 Audit Trail View Each action recorded to the file includes the date time it occurred as well as the user if logged in that made the change If no user is logged in the user will be listed as Device Manager which is the default user account for the EZT 570S The send email icon allows the user to send a copy of the currently opened audit trail file to any email address entere...

Страница 83: ...llows the user to digitally sign a file to prevent data tampering and view all digital signatures associated with the currently loaded historical data file File menu Open Opens a history file for review Delete Allows the user to delete the currently loaded history file NOTE The Delete log file function does not affect data from a file that is running only the current data log file loaded for revie...

Страница 84: ...s provide only the process value PV selection When selections are completed press the Save button to save the point selection to memory New selections will not take effect until the Save button is pressed 7 2 Start Stop Data Logging The EZT 570S logs data to its SD card Current data for each variable is written to the log at a fixed interval based on the settings entered in the Length and Interval...

Страница 85: ...ally digitally signed by the EZT 570S If the files are to be digitally signed this must be done manually by extracting the files and using the CSZ data viewer program running on a remote PC To manually start data logging press the On Off button Any time logging is enabled the indicator on the button will be illuminated To stop data logging press the On Off button again Data logging can also be sta...

Страница 86: ...he file has been opened the EZT 570S will automatically plot up to the first eight channels of the historical data file or the user can choose to cancel the plot select which channels should be plotted as well as adjust the specific time period to plot 7 3 1 History Plot Setup The history plot setup allows the user to select any time frame zoom in out from the historical data file as well as selec...

Страница 87: ...assigned to plot the EZT 570S will alert the user to correct the problem The X and Y axis scales are set to auto scale based on current values for each plot channel so no user action is required The historical graph provides the same zoom feature as the real time trends so the user can zoom in on a particular area of the historical plot by dragging their finger across the screen to draw a rectangl...

Страница 88: ...larm log and audit trail directories are saved to the internal SD card not the USB memory stick device plugged into the EZT 570S Never unplug the SD card when the ET 570S is powered up or loss of data may result The USB file transfer screen allows the user to copy or erase files from the internal SD card Complete file directories for all file types can be copied to the USB memory stick and erased ...

Страница 89: ...ppear listing the available program directories on the USB memory stick Program directory names exported from the EZT 570S are in the format Profiles_mm_dd_yyyy hh_mm_ss The USB memory stick must be inserted into the USB port for any of the file utility operations to function Due to manufacturing variations in the USB memory sticks it may take from a few seconds up to 30 seconds for the EZT 570S t...

Страница 90: ...sing the EZT 570S file utilities The EZT 570S may not operate properly if you do so 7 5 FTP Data Backup The FTP WAN screen allows the user to configure automatic back up of all data files contained in the EZT 570S memory to a user designated FTP site When enabled the EZT 570S will automatically back up all data log files alarm files and audit trail files at 2 00AM each day With the optional delete...

Страница 91: ...n automatic backup of all historical data files alarm files and audit trail files contained in its internal memory to the designated FTP site If data logging is currently active the active file will not be copied If the barcode reader option is enabled and set for Start the automatic program the automatic transfer will be skipped if it occurs while a program has been selected through the barcode r...

Страница 92: ...e annotation is shown Note that the currently running data log file can be opened as a historical data file and the current annotations for the running file will be shown To add an annotation to the running log file touch the Entry field at the bottom of the screen and enter the message up to 16 characters maximum Press the Save button and the message will be added to the current log file If the r...

Страница 93: ...ta has been altered at some time after the signature was assigned to the file For data integrity the EZT 570S automatically signs a data file when logging is stopped however this only occurs if the Auto Interval is selected on the Log screen If a different logging interval is used and the file size becomes greater than 500KB the EZT 570S will not automatically sign the file and it must be signed b...

Страница 94: ...u Units Setting for temperature units Clock Settings for system date and time Language Settings for menu and help language text Special Settings for custom functions Hardware menu Analog Input Settings for optional analog input operation Analog Output Settings for optional analog output operation Digital Input Settings for optional digital input operation Digital Output Settings for optional digit...

Страница 95: ...button on the numeric keypad when finished To adjust the service interval counters you must be viewing the elapsed service count See section 8 1 1 Service Options for information on viewing elapsed service and life totals When a service interval is exceeded an alert can be set to illuminate the corresponding indicator on the status Monitor screen An audible alert can also be turned on to get the o...

Страница 96: ...nterval The selections are mutually exclusive The notification selection provides visual notification only by simply turning on the service indicator on the Status monitor screen The audible notification selection will also sound an intermittent beep of the chamber s audible alarm The user will have to then press the Reset button on either the Status monitor or Alarm screen to silence the alarm To...

Страница 97: ...or the desired temperature units to make the selection The choices are mutually exclusive so when one selection is made the other will be de selected When changing display units ramp soak program set points will not be converted between units Separate programs are required for each temperature range The chamber and or product under test may be damaged as a result of operating programs that have be...

Страница 98: ...the date and time entered 8 3 1 Time Options Select the time Options tab to configure the time zone and national time server clock settings If the EZT 570S is connected to the internet these settings can be used to have its clock automatically synchronize the time with one of the nationally provided time servers Figure 8 5 Time Options To enable the national time server select your time zone and w...

Страница 99: ...en contact the local computer in order to synchronize time The steps required to configure and provide NTP service from a computer on the LAN is outside the scope of this manual Contact your network administrator for assistance 8 3 2 DST Settings Select the Daylight tab to configure daylight saving time options The daylight savings time options allow the user to set the start date and end date for...

Страница 100: ...ese Czech Danish Dutch English Finnish French German Greek Hebrew Hungarian Icelandic Italian Japanese Korean Norwegian Polish Portuguese Russian Spanish Swedish Turkish DISCLAIMER English is the default language for the EZT 570S All other language selections provided through internet translation of the English language CSZ does not guarantee the accuracy or validity of alternative language select...

Страница 101: ...your system the tagnames for the fields will describe what the setting is for The value can be changed by touching the field entry window and entering the new setting via the keypad Figure 8 8 Special Settings For most systems these settings will not be available If the settings are present on your system and you have questions regarding these settings contact our service department for assistance...

Страница 102: ...e 8 9 Analog Inputs Use the left or right navigation arrows at the top right of the screen to select the desired analog input to configure an input To make changes to the analog input s configuration select the desired input type by pressing the Vdc or mA button to select either a 0 10V or a 4 20mA input signal The selections are mutually exclusive so selecting one input type will deselect the oth...

Страница 103: ...70S allows the set point generated by the remote source to be inverted meaning the minimum input signal 0V or 4mA will set the maximum set point while the maximum input signal 10V or 20mA sets the minimum set point This is done by simply reversing the set point entries for the Minimum and Maximum fields For example an input programmed to generate a set point between 40 and 100 for a 0 10V input si...

Страница 104: ...can induce unwanted noise into the signal leads Figure 8 11 Analog Input Wiring Connect only one signal source to each input Note that the provided connection may have terminals for all five available inputs however your chamber may be equipped with only one based on purchased options If you are having trouble with getting an input to operate first make sure that it is available on your chamber Ex...

Страница 105: ...uts If more than one analog output is available use the left and right navigation arrows at the top right of the screen to select the desired output To make changes to the output s configuration select the desired output type by pressing the Vdc or mA button to select either a 0 10V or a 4 20mA output signal The selections are mutually exclusive so selecting one input type will deselect the other ...

Страница 106: ... loop source is at its maximum value and the maximum output signal 10V or 20mA will be transmitted when the selected loop source is at its minimum value This is done by simply reversing the output entries for the Minimum and Maximum fields For example an application requires a 0 10V output signal from the temperature loop for a cooling output of 0 100 On the EZT 570S 0 100 cooling is represented a...

Страница 107: ... into the signal leads Figure 8 13 Analog Output Wiring If you connect more than one device to each output make sure that you do not exceed the output capabilities of the EZT 570S Note that the provided connection may have terminals for all four available outputs however your chamber may be equipped with only one based on purchased options If you are having trouble with getting an output to operat...

Страница 108: ...nges If you do not press the Save button all changes will be lost if you leave the screen or navigate to another digital input More than one digital input can be configured for the same function If more than one is set for the same function make sure that they do not interfere with each other or the selected function they are to perform may not operate correctly The Transition select buttons set t...

Страница 109: ... is not active or the program is not currently in hold no action will occur This is a single shot activation in which the input must make the required transition state in order to activate the function End Program When selected the input will turn the program off This will also turn off all system events If a program is not running no action will occur and event status will not be affected This is...

Страница 110: ...n off This includes all optional digital outputs configured as customer events The outputs will stay off as long as the input is on When the input turns off all outputs will return to normal operation Event Outputs Off When selected the input will cause all optional digital outputs configured as customer events to turn off The outputs will stay off as long as the input is on When the input turns o...

Страница 111: ...ee relay contacts The input connection provides both 24Vdc power and common terminals for use with the digital inputs Power can also be provided by a separate source In order for a separate source to work properly the common terminal of the external power supply must be connected to the common terminal on the input connector Do not connect the 24Vdc terminal on the chamber to the output of another...

Страница 112: ...ts The left and right navigation buttons at the upper right of the screen allow the user to scroll through each available output To alter the function of the output press the function button A list will be provided with the available selections Select the desired function by pressing the on off button for the function The selection is mutually exclusive so selecting one will turn off the others Fi...

Страница 113: ...is started the output will pulse when the first step of the program is started Input Alarm When selected the output can be controlled by a loop monitor input alarm The alarm must be configured to control the output See Section 5 4 Alarms for information on assigning the alarm to the event output This output mode provides a way of controlling devices at specific temperature or humidity levels for e...

Страница 114: ...6 4 2 Digital Output Wiring Locate the digital output connector on your chamber Figure 8 19 is a representation of the typical digital output connection provided on most chambers however as changes and or improvements are made your specific connection style may vary If using the digital outputs for low level signals to solid state circuitry it is recommended that all wiring be of the shielded type...

Страница 115: ...on headers Each output is rated for 2A of current with a maximum of 8A per common line If all outputs are being used the sum of the current must not exceed 8A Digital Output Specifications Voltage Input Maximum Load Current 2A point 8A per common line Minimum Switching Load 0 1mA 0 1Vdc reference value Response Time 1 7 seconds maximum ...

Страница 116: ...r to adjust for sensor tolerances and lead affects Through the use of a simple ice bath all sensors can be corrected within a matter of minutes without having to disconnect leads or have expensive calibration equipment With the chamber at ambient temperature place a bucket of ice filled with water in the chamber Place all monitor input thermocouples into the ice bath Allow the probes to soak for a...

Страница 117: ...ation system pressures in gauge pressure the offsets for the pressure monitor inputs will be set to a default value of 14 7 standard atmospheric pressure This converts the absolute pressure readings to gauge pressure The EZT 570S uses 9300 controllers to monitor the refrigeration system temperatures and pressures One 9300 is used for each suction and discharge line Input 1 of the 9300 is temperatu...

Страница 118: ...field and enter the desired volume level To test the buzzer press the Alarm Test button 8 8 1 Calibrate Touch After extended use and many hours of operation it may be necessary to recalibrate the touch screen of the EZT 570S A typical sign that the screen may be out of adjustment is inaccurate responses when attempting to press buttons check boxes or adjust fields on the display The calibration ut...

Страница 119: ...e complete the calibration utility will provide a notification message that the new calibration settings have been measured and to touch the screen to register the new calibration data just touch anywhere on the screen to close the window and return to the EZT 570S application to resume normal operation 8 8 2 Backlight Settings The backlight settings allow the user to adjust the screen brightness ...

Страница 120: ...er Idle slider is used to adjust the brightness of the display during periods of inactivity The default setting is 5 Note that as you adjust the slider the display will temporarily dim to the selected level to indicate how the selected brightness level will appear Figure 8 24 Advanced Backlight Options To enable the backlight dimming function selected the desired delay time from the Switch state t...

Страница 121: ...ilename_mm_dd_yy_hh_mm_ss to identify the configuration according to the date and time it was created This prevents multiple configuration files with the same name from overwriting previous files It also allows the user to identify a backup of the EZT 570S so that it could be reconfigured to a previous date if multiple back ups are created The Import button is used to write the configuration data ...

Страница 122: ...he 9300 or C21 loop controls The individual PID loop controls must be configured manually though the front panel of the device in order to make changes to the settings for controlled process temperature humidity product etc 8 10 About the EZT 570S The About screen provides operating system version numbers for the currently installed firmware and program of both the EZT 570S HMI and control module ...

Страница 123: ...ll return the EZT 570S to normal operation on the next power up The configuration mode startup option will start the EZT 570S chamber configurator program on the next power up so that the user can access chamber configuration settings The exit configuration mode startup option is for CSZ Products factory authorized service personnel only Do not alter any chamber configuration settings without the ...

Страница 124: ...the standard network communications port The EZT 570S can also provide an IEEE 488 GPIB communication port through the use of an optional interface converter To connect to the available communication ports locate the communications connector panel on the chamber Figure 9 1 Communications Connector Optional IEEE 488 GPIB Connector Location EIA 232 Serial Connector D sub 9 Pin EIA 485 Serial Connect...

Страница 125: ...T 570S are fixed other than the controller address and parity The host computer s serial port must be set to match the fixed EZT 570S port settings Address 1 31 user selectable Baud Rate 9600 Data Bits 8 Stop Bits 1 Parity none odd even user selectable The Modbus Address is used to identify the EZT 570S on the serial link When a multi drop connection is used each controller on the link must have a...

Страница 126: ...rt settings of the EZT 570S and the host computer match and be sure to save any changes to the EZT 570S communication settings Cycle power to the EZT 570S if any serial communication settings have been changed and the serial connection is ready for operation 9 1 3 EIA 485 Connections The EZT 570S communication interface supplies two RJ 11 connectors for convenient daisy chaining of multiple chambe...

Страница 127: ...ill degrade performance Maximum recommended total length is 350 feet but is by no means guaranteed The total length depends on many factors including the quality of wire used the number of chambers on the link and the presence of electrical equipment in the area that may generate electrical interference For longer runs and when multiple chambers are used on the same link a line terminator may be r...

Страница 128: ...9 includes a list of commands for controlling Modbus devices These commands specify the Modbus slave device address a read or write operation a register number and data or the number of registers to be read When the Controller receives a read R or write W command it converts the GPIB characters into HEX bytes assembles the packet and transmits it to the Modbus device This simplifies communications...

Страница 129: ...ograms like ICS s GPIBKybd program can recognize the command as a query and automatically read the response Responses are returned as 16 bit decimal values separated by commas R 61 1 reads EZT 570S loop 1 process value Example response is 527 for 52 7 degrees R 60 3 reads three successive registers for loop 1 SP PV and Out Example response is 550 527 10000 for SP of 55 0 PV of 52 7 and Out of 100 ...

Страница 130: ...work and careless or nonexistent internal security measures Accidental problems are more common than deliberate ones Allowing anyone access to the EZT 570S by placing it on the office LAN also opens the door for accidental shutdown damage to equipment loss of data lost time etc This is possible even by the most well intentioned co workers Thus there are several steps that should be taken to minimi...

Страница 131: ...e network It is important to note that if using DHCP in your network router the address may change on re power requiring you to access the EZT 570S directly in order to obtain the new IP address This could result in VNC web server connection issues if the address regularly changes Therefore it is recommended that the IP address for the EZT 570S be assigned as a fixed static address This insures th...

Страница 132: ...E desktop The text System Startup Please Wait on the desktop is static and does not indicate that any application is going to start at this time It is used as a placeholder prior to the EZT 570S runtime or configuration application starting during normal power up sequences so that the user is informed that an action is taking place Figure 9 3 CE Desktop From the desktop double tap the hidden icon ...

Страница 133: ...s been recorded close the network information windows and cycle power to the chamber in order to restart the system and return to normal operation 9 3 2 2 Setting a Static IP Address In order to set a static IP address for the EZT 570S on a network it requires you to exit the EZT 570S application and enter the Network and Dial up Connections settings of the CE operating system It is recommended th...

Страница 134: ... used as a placeholder prior to the EZT 570S runtime or configuration application starting during normal power up sequences so that the user is informed that an action is taking place From the desktop double tap the hidden icon at the top left of the screen to provide access to the taskbar application Press the Show Taskbar button in order to show the taskbar and then press the Quit button to exit...

Страница 135: ...ettings and then Network and Dial up Connections to show the connections window From the Connection window select the current network connection by double tapping the connection icon to enter its property window DO NOT create a new connection The Ethernet Drivers property window will allow you to set the IP address as well as name primary and secondary DNS and WINS servers from the Name Servers ta...

Страница 136: ...ttings cycle power to the chamber in order to restart the system and return to normal operation with the new network settings 9 3 3 Using the Web Server The EZT 570S s web server allows a user to remotely monitor chamber operations anywhere via a PC s standard web browser When enabled the web server provides a detailed status page of the EZT 570S s current operating conditions The web server can b...

Страница 137: ...owser address window http IPaddress ezt html from example address http 192 168 0 11 ezt html The following example is typical of the EZT 570S web page appearance The web page updates automatically every 30 seconds and provides information on each individual loop program status alarm status and event status ...

Страница 138: ...version can be obtained from http www realvnc com for PC MAC use RealVNC does offer a version for the iPad that can be obtained through the App Store for a small fee The App Store also offers a free VNC client called Remotix for the iPad It has also been tested for compatibility with the EZT 570S Contact your network administrator prior to enabling the VNC server of the EZT 570S Company policy may...

Страница 139: ...when the settings are made Proceed to the Expert tab and scroll down the list of settings until you find the FullColour option It is recommended that this option be set to true If set to false the EZT 570S screen may not be shown properly in the client window Locate the PreferredEncoding and Protocol3 3 options further down the list and set the preferred encoding to Hextile and the Protocol 3 3 op...

Страница 140: ...nectivity If the client offers the option leave color and encoding options to automatically detect or server decides If the client is still unable to connect try default encoding of Hextile and set the color option to limited colors such as 256 bit color We do not write or create VNC clients 3rd party software so final selection of the client and testing is the end user responsibility The followin...

Страница 141: ...ddress and specific port address are assigned to the EZT 570S support on this action is beyond the scope of this guide Consult your network system administrator for assistance in setting up an Internet connection If the IP address of the LAN is 69 216 64 69 and the configured VNC Address is 1 port 5901 has been opened and assigned to this specific EZT 570S from the remote PC outside of the site Se...

Страница 142: ...w software to monitor and control the EZT 570S over its serial communications port The web server interface and PC software is designed for long term monitoring and status updates Due to the nature of VNC operation and for security reasons the VNC viewer connection should not be left open on your desktop The viewer connection should be opened in order to perform the necessary control and or status...

Страница 143: ...ided here covers typical options and accessories If you are unable to diagnose a problem through the use of this guide contact our Service Department Please have the following information available Model and Serial for the chamber Software Version s All User Manuals The software versions can be found on the About screen under the offline system menu ...

Страница 144: ... HMI and PLC faulty or not properly connected If alarm will not clear check wiring Exit EZT 570S application and verify that COM1 serial port is set to RS485 If intermittent alarm can be cleared and returns at random intervals then remote PC communicating too fast with EZT 570S Reduce rate at which PC sends commands to the EZT 570S or reduce number of communication connections Random alarms when c...

Страница 145: ...dresses on 9300 controllers Verify power to 9300 controllers Check rear terminal plug on 9300 controllers and make sure it is seated properly MOTOR OVERLOAD Motor overload tripped or motor drive fault Requires manual reset of motor overload Check drive and motor fusing Check motor for overload condition i e bearing wear binding shaft etc Replace fuse repair replace motor or drive NTS Ping Failed C...

Страница 146: ...d Check compressor oil level Requires manual reset Service and further diagnostics require authorized certified refrigeration service personnel SYS HI DISCHARGE Refrigeration system system number discharge safety tripped Check liquid injection solenoid Automatically resets Service and further diagnostics require authorized certified refrigeration service personnel SYS COMP MONITOR Refrigeration sy...

Страница 147: ...s when open the indicator will be lit SERVICE FANS Service alert if enabled indicating that the prime air movers of the chamber require regular maintenance Perform service and clear elapsed service count for corresponding components SERVICE REFRIGERATION Service alert if enabled indicating that the heating and or cooling system components require regular maintenance Perform service and clear elaps...

Страница 148: ...E SYS HRS Change vacuum pump oil filter Check oil level in vacuum pump Check for leaks Add oil if needed If applicable inspect drive belts and replace if worn Re tension belts Inspect motor bearings for excessive wear slop Lubricate if applicable SYS COMPRESSOR HRS Check compressor oil level Verify static pressures Clean air cooled condenser if applicable air cooled units Inspect condenser water c...

Страница 149: ...n solenoid coil Requires authorized refrigeration service personnel to replace LOW RH VALVE CYCLES DIVE VALVE CYCLES Inspect valve body and fittings for cracks or leaks Verify pressure regulator settings VACUUM VALVE CYCLES TRANSFER CYCLES Inspect transfer mechanism for wear Adjust slide mechanisms and or lubricate as necessary Inspect cables for fraying and replace if applicable The elapsed servi...

Страница 150: ......

Страница 151: ...EZT 570S User Manual A 1 A Appendix ...

Страница 152: ...emporary IP addresses for new devices logging in to the network DNS Domain Name Server Associates names with IP addresses over a network Droop In proportional controllers the difference between set point and actual value after the system stabilizes EIA See Electronics Industries of America EIA TIA 232 and 485 Data communications standards set by the Electronic Industries of America and Telecommuni...

Страница 153: ...es are temperature relative humidity altitude etc The high process variable is the highest value of the process range expressed in engineering units The low process variable is the lowest value of the process range Proportional control P Output effort proportional to the error from set point For example if the proportional band is 20 and the process is 10 below set point the heat proportioned effo...

Страница 154: ...igure 4 3 Set Point Ramp Rate Entry 37 Figure 4 4 Program Step Events 39 Figure 4 5 Program Soak Events 40 Figure 4 6 Program Wait For 41 Figure 4 7 Program AutoStart 43 Figure 4 8 Guaranteed Soak Limits 44 Figure 4 9 Program Plot 45 Figure 4 10 Program List 45 Figure 4 11 Program Operation 46 Figure 4 12 Program Start Step 46 Figure 4 13 Program Status 48 Figure 4 14 Adjust Step Time 49 Figure 5 ...

Страница 155: ...ure 8 9 Analog Inputs 102 Figure 8 10 Analog Input Loop Select 102 Figure 8 11 Analog Input Wiring 104 Figure 8 12 Analog Outputs 105 Figure 8 13 Analog Output Wiring 107 Figure 8 14 Digital Inputs 108 Figure 8 15 Digital Input Functions 109 Figure 8 16 Digital Input Wiring 111 Figure 8 17 Digital Outputs 112 Figure 8 18 Digital Output Functions 112 Figure 8 19 Digital Output Wiring 115 Figure 8 2...

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