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Newport 350B User Manual Download Page 62

 

Maintenance and Service 

 

61 

 

8 

Maintenance and Service 

CAUTION 

There are no user serviceable parts inside the Model 350B Temperature 
Controller. Work performed by persons not authorized by Newport 
Corporation will void the warranty.  

8.1 

Enclosure Cleaning 

 

WARNING 

Before cleaning the enclosure of the Model 350B Temperature Controller, 
the AC power cord must be disconnected from the wall socket.   

The enclosure may be cleaned with a soft cloth dampened with either a mild soapy water 
solution or Isopropyl Alcohol. Do not use any other chemicals or solutions.  

8.2 

Fuse Replacement 

 

 

Figure 22

 

Fuse Location 

 

 

Pry open door to remove fuses 

Summary of Contents for 350B

Page 1: ...buy your excess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demos In stock Ready to ship TAR certified secure asset solutions Expert team I Trust guarantee I 100 satisfaction All trademarks brand names and brands appearing herein are the property of th...

Page 2: ...Temperature Controllers User s Manual Model 350B ...

Page 3: ...ear mark affixed 2004 Type of Equipment Electrical equipment for measurement control and laboratory use Standards Applied Compliance was demonstrated to the following standards to the extent applicable BS EN61326 1 2006 Electrical equipment for measurement control and laboratory use EMC requirements IEC 61010 1 2010 Safety requirements for electrical equipment for measurement control and laborator...

Page 4: ...oducts which have been repaired or modified without Newport s written approval or products subjected to unusual physical thermal or electrical stress improper installation misuse abuse accident or negligence in use storage transportation or handling This warranty also does not apply to fuses batteries or damage from battery leakage THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPL...

Page 5: ... that does not need consistent with Customer s right of use hereunder to obtain access to the Newport Programs and Related Materials These restrictions shall not apply to information 1 generally known to the public or obtainable from public sources 2 readily apparent from the keyboard operations visual display or output reports of the Programs 3 previously in the possession of Customer or subseque...

Page 6: ...MA Return the product to Newport Corporation freight prepaid clearly marked with the RMA and the unit will either repaired or replaced at our discretion Newport is not responsible for damage occurring in transit and is not obligated to accept products returned without an RMA E mail rma service newport com When calling Newport Corporation please provide the customer care representative with the fol...

Page 7: ...vi This page is intentionally left blank ...

Page 8: ...onductor Terminal 13 1 2 Warnings and Cautions 13 1 2 1 General Warnings 13 1 2 2 General Cautions 14 1 2 3 Summary of Warnings and Cautions 15 1 3 Location of Warnings 16 1 3 1 Rear Panel 16 2 General Information 17 2 1 Introduction 17 2 2 Accessories 20 3 Getting Started 21 3 1 Unpacking and Handling 21 3 2 Inspection for Damage 21 3 3 Available Options and Accessories 21 3 4 Parts List 22 3 5 C...

Page 9: ...ng 31 5 1 Memory 31 5 2 Commands and Queries 31 6 Software Application 46 6 1 Overview 46 6 2 Connection 46 6 3 General Usage 47 6 3 1 LDD Tab 47 6 3 2 TEC Tab 48 6 4 Menu Structure 48 7 Principles of Operation 49 7 1 Introduction 49 7 2 Thermistor 49 7 2 1 The Steinhart Hart Equation 50 7 2 2 Table of Constants 51 7 3 Using Thermo Electric Modules 52 7 4 Mounting Considerations 53 7 5 PID Tuning ...

Page 10: ...shown 25 Figure 12 Rear Panel 28 Figure 13 Application front panel TEC Tab 46 Figure 14 Application front panel when communicating LDD Tab 47 Figure 15 Thermistor Resistance versus Temperature 51 Figure 16 TE Module Configuration 53 Figure 17 Mounting arrangement of a TE module heat sink and laser diode 54 Figure 18 Basic block diagram of a temperature control system 55 Figure 19 Proportional Temp...

Page 11: ...x This page is intentionally left blank ...

Page 12: ...ewport Corporation equipment means that it has been designed tested and certified as complying with all applicable European Union CE regulations and recommendations 1 1 2 Alternating voltage symbol Figure 2 Alternating Voltage Symbol This international symbol implies an alternating voltage or current 1 1 3 On Figure 3 On Symbol The On Symbol in the figure above represents a power switch position o...

Page 13: ...el 350B Temperature Controllers This symbol represents a Power Off condition 1 1 5 Fuses Figure 5 Fuse Symbol The fuse symbol in the figure above identifies the fuse location on the Model 350B Temperature Controllers 1 1 6 Frame or Chassis Figure 6 Frame or Chassis Terminal Symbol This symbol identifies the frame or chassis terminal ...

Page 14: ...tion has the potential to cause damage to property or equipment NOTE Additional information the user or operator should consider 1 2 1 General Warnings Observe these general warnings when operating or servicing this equipment Heed all warnings on the unit and in the operating instructions Do not use this equipment in or near water This equipment is grounded through the grounding conductor of the p...

Page 15: ...he protection provided by this equipment may be impaired To prevent damage to equipment when replacing fuses locate and correct the problem that caused the fuse to blow before re applying power Do not block ventilation openings Use only the specified replacement parts Follow precautions for static sensitive devices when handling this equipment This product should only be powered as described in th...

Page 16: ...acles only Failure to observe this precaution can result in severe injury WARNING To reduce the risk of electric shock or damage to the instrument turn the power switch off and disconnect the power cord before replacing a fuse WARNING Before cleaning the enclosure of the Model 350B Temperature Controllers the AC power cord must be disconnected from the wall socket CAUTION Make sure that the select...

Page 17: ...he product or on its packaging indicated that this product must not be disposed of with regular waste Instead it is the user responsibility to dispose of waste equipment according to the local laws The separate collection and recycling of the waste equipment at the time of disposal will help to conserve natural resources and ensure that it is recycled in a manner that protects human health and the...

Page 18: ...tting to protect TE coolers from damage regardless of operating mode The P I D control loop renders performance for fast settling onto a low noise bipolar current output in three operating modes 1 constant thermistor resistance 2 constant Temperature as monitored by a thermistor or 3 constant peltier cooler thermo electric temperature A user adjustable TE cooler current limit setting unconditional...

Page 19: ...ms 0 03 Current Limit Range A 0 5 05 Accuracy mA 9 Resolution mA 0 084 Stability Short Term Stability 1 h 0 001 C Long Term Stability 24 h 0 005 C Display Range Temperature o C 50 0 to 150 0 C Resistance 10 µA k 0 1 200 0 Resistance 100 µA k 0 01 20 00 TE Current A 5 00 to 5 00 Resolution Temperature 0 1 C Resistance 10 µA 100 Resistance 100 µA 10 TE Current mA 10 Accuracy Temperature 0 1 C Resist...

Page 20: ...is Ground 4 mm banana jack Size H x W x D in mm 3 5 88 x 8 5 215 x 12 6 320 Weight lb kg 8 9 4 05 Operating Temperature 0 C to 40 C 90 humidity non condensing Operating Altitude 3000 m 10 000 feet Storage Temperature 29 C to 60 C Storage Relative Humidity 85 humidity non condensing Safe Use Environment Indoor Electrical Class 1 Pollution Degree 2 Transient Overvoltage Category 2 Connectors Output ...

Page 21: ... Model 350B Temperature Controller come with a line cord for connection to AC power To order accessories use the following part numbers Model Description 300 02 Temperature Controller Cable 300 04 TEC Mount Cable 300 16 10 0 kΩ Thermistor 0 2 C ...

Page 22: ...ctory to minimize the possibility of damage during shipping Inspect the box for external signs of damage or mishandling Inspect the contents for damage If there is visible damage to the instrument upon receipt inform the shipping company and Newport Corporation immediately WARNING Do not attempt to operate this equipment if there is evidence of shipping damage or there is reason to suspect the uni...

Page 23: ...e if desired Provide adequate distance between the Model 350B Temperature Controller and adjacent walls for ventilation purposes Approximately 2 inch spacing for all surfaces is adequate CAUTION The primary means for disconnection from the AC mains is disconnecting the power cord from the instrument Do not position this instrument that makes it difficult to disconnect the power cord 3 6 Electrical...

Page 24: ... connector that provides in line transient protection and RF filtering The input power connector contains the fuses and the switch to select series or parallel connection of the transformer primaries for operation at 100VAC 120VAC 220VAC or 240VAC Refer to paragraph 4 2 4 before applying power ...

Page 25: ...24 Getting Started This page is intentionally left blank ...

Page 26: ... 11 below Figure 11 Front Panel Layout 350B shown 4 1 1 AC Power Switch When the AC power is turned on the unit starts up with the OUTPUT off display in SETPOINT mode and mode of operation in either R T or ITE mode depending upon the mode selected when the unit was last turned OFF 4 1 2 Analog Output A BNC connector can be used to monitor the temperature sensor value The transfer function of the o...

Page 27: ...or LED An ERROR condition occurs when there is an open circuit to the TE module or temperature sensing device The output current is automatically turned off Once the device is replaced or reconnected pushing the output switch twice will clear the error indication and restore the output on condition Limiting Indicator LED This LED lights up whenever the output current reaches a user adjustable thre...

Page 28: ...ble below for details R MODE T MODE ITE MODE Thermistor kΩ C C CURRENT Display This readout monitors the actual current level in Amps being supplied to the TE module When the OUTPUT is first selected this current value may be as high as the LIMIT value As the temperature stabilizes the output current will decrease Indicator LEDs To the right of the numeric display are three LEDs which indicate mea...

Page 29: ...switch position for each sensor is printed on the rear panel next to the switch The LM335 and AD590 sensor positions do not operate at this time 4 2 3 TE Driver Output Connector Connections to the TE module and temperature sensor are made using a 15 pin D sub connector respectively There are two pins each for the TE and TE Connections to provide redundancy and reduce the voltage drop in the cable ...

Page 30: ...C 60HZ The fuse must be changed for 198 242VAC and 216 264VAC operation Select 100VAC for operation at 90 110VAC 60Hz 120VAC for operation at 108 132VAC 60Hz 220VAC for operation at 198 242VAC 50Hz 240VAC for operation at 216 264VAC 50Hz The line cord supplied with each unit should be plugged only into a properly grounded three prong outlet to prevent electrical shock in the event of an internal s...

Page 31: ...30 System Operation This page is intentionally left blank ...

Page 32: ... a question mark while commands may require parameter s to follow TEC LIMit I 2 00 For example the value 2 00 in the command TEC LIMit I 2 00 sets the output current limit at 2 00 Table 2 below summarizes all the commands and queries supported by the instrument The command query MUST contain all of the letters which are shown in upper case in this table The lower case letters shown with the comman...

Page 33: ...command string length should not exceed 50 characters In the example shown below a command string was created with semicolon separating 5 queries The controller responds to this command string with a response that has 5 values using a comma as a separator COMMAND STRING TEC OUT TEC SET I TEC I TEC SET R ERR INSTRUMENT RESPONSE 0 1 25 0 00 10 00 0 COMMAND TERMINATION All commands sent to the instru...

Page 34: ...ds specific to Temperature Controllers Command Syntax Command Description Remarks TEC CONST TEC sensor constants command TEC CONST TEC sensor constants query TEC GAIN PID TEC PID settings TEC GAIN PID TEC PID settings query TEC Ite TEC ITE set point TEC Ite TEC measured ITE query TEC LIMit Ite TEC ITE current limit set TEC LIMit Ite TEC ITE current limit set query TEC MODE Ite ITE mode TEC MODE R ...

Page 35: ... return an identification string NEWPORT XXXX vYYY mm dd yy SN ZZZZ Examples NEWPORT 350B v2 00 05 17 04 SN 1 RCL Description Recall command Syntax RCL value Argument Value Description Value 0 Restores Factory Default settings 1 Restores last saved working setting 2 Restores last saved user settings Remarks The recall command restores the instrument to the setup state which was last saved using SA...

Page 36: ...allows the programmer to read the Status Byte Register Response Description Status Byte Register bit 0 Reserved bit 1 Reserved bit 2 Reserved bit 3 Reserved bit 4 Message Available bit 5 Reserved bit 6 Reserved bit 7 Error Message Available ADDRess Description USB address command Syntax ADDRess value Remarks The ADDRess command sets the instrument USB address After changing USB address the communi...

Page 37: ...tion Error code Error code number 0 if no errors See Also ERRSTR Error Messages 0 NO ERROR No errors exist in the output buffer 115 IDENTIFIER NOT VALID The issued command does not exist Check the command syntax 200 REMOTE MODE Instrument is presently in remote mode As a result the rotary knob MODE and OUTPUT switches have been made inactive Issue LOCAL command to make the knob and switches active...

Page 38: ...ANGE The output has been turned OFF because a mode change was commanded using either TEC MODE I or TEC MODE R or TEC MODE T commands 420 SENSOR MISMATCH The command issued is not supported for the selected sensor type This message is obtained when an IC sensor is selected and resistance related commands are issued 901 SYSTEM OVER TEMPERATURE ERROR The output has been turned OFF because temperature...

Page 39: ...e from USB remote Syntax LOCAL Remarks Returns the controller to local mode after being placed in remote mode by the USB interface The instrument will be set to Local Mode if no commands are sent to it via its USB interface for 10 seconds TEC CONST Description TEC sensor constants command Syntax TEC CONST C1 C2 C3 Remarks The TEC CONST command sets the TEC constants for the Steinhart Hart equation...

Page 40: ...nd sets the proportional integral and derivative control gain constants Argument Value Description Kp 1 to 1000 Proportional gain constant Ki 1 to 1000 Integral gain constant Kd 1 to 1000 Derivative gain constant Examples TEC GAIN PID 50 2 20 Action sets Kp to 50 Ki to 2 Kd to 20 See Also TEC GAIN PID TEC GAIN PID Description TEC PID controller gain constants query Syntax TEC GAIN PID Remarks The ...

Page 41: ...he value of the measured TEC output current Response Description measured output Current in Amps The TEC current is constantly measured and updated regardless of the TEC mode of operation This measurement is updated approximately once every 225 milliseconds See Also TEC Ite TEC LIMit Ite Description TEC ITE current limit command Syntax TEC LIMit Ite limit Remarks The TEC LIMit Ite command sets the...

Page 42: ...value will be displayed See Also TEC Ite TEC MODE TEC MODE R Description TEC R mode command Syntax TEC MODE R Remarks The TEC MODE R command selects TEC constant thermistor resistance mode Since sensor resistance or linear sensor reference is a function of temperature this mode also controls the TEC output temperature but it bypasses the use of the conversion constants for set point calculation Th...

Page 43: ...t point value will be displayed See Also TEC MODE TEC T TEC MODE Description TEC control mode query Syntax TEC MODE Remarks The TEC MODE query returns the selected TEC control mode Response Value Description mode ITE constant current R constant R T constant T See Also TEC MODE Ite TEC MODE R TEC MODE T TEC OUTput Description TEC output enable command Syntax TEC OUTput enable Remarks The TEC OUTput...

Page 44: ...EC OUTput TEC R Description TEC R set point command Syntax TEC R set point Remarks The TEC R command sets the TEC constant thermistor set point Argument Description set point Thermistor set point in k Ohms See Also TEC R TEC R Description TEC measured R query Syntax TEC R Remarks The TEC R query returns the value of the TEC thermistor measurement Response Description R value Measured Thermistor re...

Page 45: ...sensor 1 Thermistor at 100 A drive 2 Thermistor at 10 A drive See Also TEC SENsor TEC SET Ite Description TEC ITE set point query Syntax TEC SET Ite Remarks The TEC SET Ite query returns the TEC constant current set point value Response Description set point ITE set point in Amps See Also TEC Ite TEC SET R Description TEC R set point query Syntax TEC SET R Remarks The TEC SET R query returns the T...

Page 46: ...emperature set point command Syntax TEC T Remarks The TEC T command sets the TEC constant temperature set point Argument Description set point Set point in C See Also TEC SET T TEC T TEC T Description TEC measured temperature query Syntax TEC T Remarks The TEC T query returns the value of the TEC temperature measurement Response Description measured temp Measured temperature in C This measurement ...

Page 47: ...t is an installation for a software application that communicates with the 350B 500B using the USB port The installation installs the USB drivers that are required to use USB communication The design of the software is to allow the user to remotely control the functions of the instrument 6 2 Connection Set the USB Virtual Address and click the CONNECT button to start communicating with the instrum...

Page 48: ...ware has two tabs one for the 350B TEC specific functions and one for the 500B LDD functions The individual TEC and LDD specific tabs have two columns labeled on the top as CONTROLS and READBACK 6 3 1 LDD Tab CONTROLS LDD Mode Sets I P mode of control Output Enable Turns on off the output LD Current Sets the forward laser current PD Current Sets the monitor diode PD current LD Limit Set the maximu...

Page 49: ...rature or Resistance ITE Displays the TEC Current The Laser Output Current Level display on the bottom is a visual indicator of the current reading for forward current LD Current with the upper limit of LD Limit On the very bottom are an Error indicator light and a display of the last Errors if any 6 4 Menu Structure To Exit the application go to the File menu and select Exit The Edit TEC Settings...

Page 50: ...ing to the temperature of the thermistor The actual temperature of the thermistor can be determined from the manufacturers curves or tables listing temperature vs resistance Two precision current sources 10µA and 100µA are used to generate a voltage across the thermistor and it is this voltage that is read on the front display For the 10µA current source the maximum resistance that can be displaye...

Page 51: ...l feedback loop This can be checked by monitoring the voltage at the front panel BNC connector Analog Output 7 2 1 The Steinhart Hart Equation The Steinhart Hart equation is used to derive temperature from the non linear resistance of an NTC Negative Temperature Coefficient thermistor Two terminal thermistors have a non linear relationship between temperature and resistance The resistance versus t...

Page 52: ...able 3 Steinhart Hart Curve Fitting Accuracy The constants C1 C2 and C3 may all be expressed in the form n nnn simplifying entry into the 350B 7 2 2 Table of Constants Some common thermistors are listed and included the appropriate calibration constants for the temperature range 20 C to 50 C in Table 4 Model 350B by default uses the BetaTHERM 10K3A2 thermistor values 1 Resistance of a 10K Fenwal U...

Page 53: ...rection of the current flow determines whether the TE module is cooling or heating a device such as a laser diode or IR detector A TE module consists of a matrix of thermoelectric couples made of p type and n type semiconductor material A TE module can be fabricated with as few as one couple or with as many as several hundred couples sandwiched between two ceramic plates The ceramic plates form th...

Page 54: ...t the maximum current flowing through the TE module 7 4 Mounting Considerations The physical arrangement of the TE module thermistor heatsink and the device to be cooled or heated are crucial to the operation of a Model 350B Temperature Controller This arrangement determines the thermal load and the rate of heat dissipation to which the control circuitry must respond To achieve optimum temperature...

Page 55: ...shown in the diagram The actual connection of the TE module depends on the manufacturer s specifications for the voltage drop across the TE module and its current requirement Figure 17 Mounting arrangement of a TE module heat sink and laser diode ...

Page 56: ...rformance Figure 18 Basic block diagram of a temperature control system 7 5 1 PID Control Loop The PID term comes from the proportional integral and derivative gain factors that are at the basis of the control loop calculation The common equation given for it is 𝑢 𝐾𝑝 𝑒 𝐾𝑖 𝑒 𝑑𝑡 𝐾𝑑 𝑑𝑒 𝑑𝑡 where 𝐾𝑝 𝑝𝑟𝑜𝑝𝑜𝑟𝑡𝑖𝑜𝑛𝑎𝑙 𝑔𝑎𝑖𝑛 𝑓𝑎𝑐𝑡𝑜𝑟 𝐾𝑖 𝑖𝑛𝑡𝑒𝑔𝑟𝑎𝑙 𝑔𝑎𝑖𝑛 𝑓𝑎𝑐𝑡𝑜𝑟 𝐾𝑑 𝑑𝑒𝑟𝑖𝑣𝑎𝑡𝑖𝑣𝑒 𝑔𝑎𝑖𝑛 𝑓𝑎𝑐𝑡𝑜𝑟 𝑒 𝑖𝑛𝑠𝑡𝑎𝑛𝑡𝑎𝑛𝑒𝑜𝑢𝑠 𝑒𝑟𝑟𝑜𝑟 𝑑𝑒𝑠𝑖𝑟𝑒𝑑...

Page 57: ...s error by multiplying it with Kp and generates a control signal current that drives the TE module There are a few conclusions that could be drawn from studying this block diagram The control signal is proportional to the temperature following error There must be a following error in order to drive the TE module Small errors cannot be corrected if they do not generate enough current for the TE mod...

Page 58: ...ing effect on the control loop if increased too much 7 5 4 PID Loop The third term of the PID loop is the derivative term This term amplifies the rate of change of temperature following error by Kd gain factor If the following error does not change the contribution of derivative term to the control signal is zero Figure 21 shows the PID control loop diagram Figure 21 PID Temperature Controller Blo...

Page 59: ...t is compatible with the outlet to be used All units are factory preset for operation from 108 132VAC b Connect the temperature sensor and TE module to the 15 pin output connector c Check that the proper temperature sensor bias is selected d Turn on the AC power switch and the unit will start up with the output to the TE module off The display will be in the PRESET mode e Before setting any values...

Page 60: ...ror condition the current will not turn on and the ERROR indicator LED will come on If this occurs verify that the temperature sensor and TE connections are correct After an ERROR condition has occurred the OUTPUT switch must be pushed once to reset the control circuitry After the fault is corrected and the circuitry is reset the OUTPUT switch can be pushed a second time and the output current wil...

Page 61: ...60 ...

Page 62: ...d the warranty 8 1 Enclosure Cleaning WARNING Before cleaning the enclosure of the Model 350B Temperature Controller the AC power cord must be disconnected from the wall socket The enclosure may be cleaned with a soft cloth dampened with either a mild soapy water solution or Isopropyl Alcohol Do not use any other chemicals or solutions 8 2 Fuse Replacement Figure 22 Fuse Location Pry open door to ...

Page 63: ...sts contact Newport Corporation for service 8 3 Obtaining Service The Model 350B Temperature Controller contains no user serviceable parts To obtain information regarding service contact Newport Corporation or a Newport representative Please have the following information available 1 Instrument model number on the rear panel 2 Instrument serial number on rear panel 3 Description of the problem If ...

Page 64: ...in RA prior to return of item Address ________________________________ ____________________Date _________________ Country _______________________ Phone Number ______________________________________ P O Number ___________________ FAX Number _______________________________________ Item s Being Returned Model _______________________ Serial __________________________ Description ______________________...

Page 65: ...Visit Newport Online at www newport com Newport Corporation Worldwide Headquarters 1791 Deere Avenue Irvine CA 92606 In U S 800 222 6440 Tel 949 863 3144 Fax 949 253 1680 Internet sales newport com ...

Page 66: ...quipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentation Artisan Scientific Corporation dba Artisan Technology Group is not an affiliate representative or authorized distributor for any manufacturer listed herein We re here to make your life easier How...

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