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PD8-6262 Explosion-Proof Dual Analog Input Flow Rate/Totalizer

Instruction Manual

Table of Figures

Figure 1. Enclosure Dimensions

– Front View ............................................... 20

Figure 2. Enclosure Dimensions

– Side Cross Section View ....................... 20

Figure 3. Transmitter Supply Voltage Selection ............................................ 23

Figure 4. Integrated P

Required Connections ....................................... 23

Figure 5. P

Electronics Module Layout .................................................. 24

Figure 6. USB Connection ............................................................................... 24

Figure 7. Power Connections .......................................................................... 25

Figure 8. 2-Wire Transmitters Powered by Internal Supply .......................... 25

Figure 9. 3-Wire Transmitters Powered by Internal Supply .......................... 25

Figure 10. Transmitter Powered by External Supply ..................................... 25

Figure 11. Self-Powered Transmitters ............................................................ 25

Figure 12. 2-Wire Voltage Input Connection .................................................. 25

Figure 13. 3-Wire Voltage Input Connection .................................................. 25

Figure 14. RS-485 Diagnostic LEDs ................................................................ 26

Figure 15. Three-Wire RS-485 Connection ..................................................... 26

Figure 16. Digital Input and Output Connections .......................................... 27

Figure 17. F4 Digital Input Connections ......................................................... 27

Figure 18. 4-20 mA Output Connections ........................................................ 27

Figure 19. Analog Output Supply Powering Other Devices .......................... 27

Figure 20. Relay Connections ......................................................................... 28

Figure 21. Interlock Connections .................................................................... 28

Figure 22. AC and DC Loads Protection ......................................................... 28

Figure 23. Low Voltage DC Loads Protection ................................................ 28

Содержание PD8-6262

Страница 1: ...ter Power Supply Easy Field Scaling in Engineering Units without Applying an Input 4 Relays with Interlocking Capability Isolated 4 20 mA Output Option Free PC Based On Board MeterView Pro USB Programming Software SunBright Display Standard Feature Great for Outdoor Applications Operating Temperature Range 40 to 60 C 40 to 140 F FM Approved as Explosion Proof Dust Ignition Proof Flame Proof CSA Ce...

Страница 2: ...2 ...

Страница 3: ...ent of the defective unit See Warranty Information and Terms Conditions on www predig com for complete details Registered Trademarks All trademarks mentioned in this document are the property of their respective owners 2022 Precision Digital Corporation All rights reserved FREE MeterView Pro Programming Software The meter can be powered from the USB connection When using the USB connection DO NOT ...

Страница 4: ...equired Factory Wired Connection 23 PROVU Electronics Module Layout 24 USB Connection 24 Power Connections 25 Signal Connections 25 RS 485 Connections 26 RS 485 Multi Drop Connection 26 Digital I O Connections 27 F4 Digital Input Connections 27 Remote Programming 27 4 20 mA Output Connections 27 Analog Output Transmitter Power Supply 27 Relay Connections 28 Interlock Relay Feature 28 Switching Ind...

Страница 5: ...he Password pass 51 Protecting or Locking the Totalizer Functions 51 Total Reset Password Non Resettable Total 51 Making Changes to a Password Protected Totalizer 51 Disabling Password Protection 51 Advanced Features Menu 52 Advanced Features Menu Display Messages 52 Noise Filter filter 54 Noise Filter Bypass bypass 54 Rounding Feature round 54 Modbus RTU Serial Communications serial 54 Select Men...

Страница 6: ...25 Figure 9 3 Wire Transmitters Powered by Internal Supply 25 Figure 10 Transmitter Powered by External Supply 25 Figure 11 Self Powered Transmitters 25 Figure 12 2 Wire Voltage Input Connection 25 Figure 13 3 Wire Voltage Input Connection 25 Figure 14 RS 485 Diagnostic LEDs 26 Figure 15 Three Wire RS 485 Connection 26 Figure 16 Digital Input and Output Connections 27 Figure 17 F4 Digital Input Co...

Страница 7: ...n A fully loaded ProtEX MAX PD8 6262 dual input rate totalizer comes with four SPDT relays a 4 20 mA output two 24 VDC power supplies five digital inputs and four digital outputs and RS 485 serial communications The four relays can be used for alarm indication or process control applications The 4 20 mA isolated output Modbus RTU serial communications and digital I O features make the ProtEX MAX a...

Страница 8: ...complete line of ProtEX MAX products predig com videos ProtEXMAX_Overview MeterView Pro Programming Software Learn how easy it is to program the ProVu ProtEX MAX process meter using MeterView Pro software predig com videos MVPro_SW MeterView Pro Software Demonstration Learn how easy it is to program Precision Digital s ProVu ProtEX MAX process meter for a level application using MeterView Pro PC b...

Страница 9: ...PD8 6262 Explosion Proof Dual Analog Input Flow Rate Totalizer Instruction Manual 9 Key Features Connections for PD8 6262 6H7 PD8 6262 7H7 ...

Страница 10: ...n be programmed and operated without removing the cover and exposing the electronics in a hazardous area These buttons can be disabled for security by selecting the DISABLE setting on the NO CONTACT BUTTONS switch located on the back of the electronics module inside the enclosure Rugged Heavy Duty Enclosure The ProtEX MAX is housed in a rugged NEMA 4X 7 9 IP68 die cast aluminum enclosure designed ...

Страница 11: ...ity Each tag comes with a stainless steel wire and lead seal for easy mounting wherever you need it Removable Screw Terminals Industrial applications require screw terminal connections for easy field wiring and the ProtEX MAX goes one step further in convenience by also making them removable Note The above photograph is representative of the back of the PD8 6262 in every regard except for the inpu...

Страница 12: ...asurement and output functions including voltage current thermocouple and RTD PD9502 Low Cost Signal Generator The PD9502 is a low cost compact simple to use 4 20 mA or 0 10 VDC signal generator It can easily be set for 0 20 mA 4 20 mA 0 10 V or 2 10 V ranges Signal adjustment is made with a one turn knob A 15 27 VDC wall plug is provided with the instrument Optional USB power bank is available ...

Страница 13: ...123 50 Password Three programmable passwords restrict modification of programmed settings and two prevent resetting the totals Pass 1 Allows use of function keys and digital inputs Pass 2 Allows use of function keys digital inputs and editing set reset points Pass 3 Restricts all programming function keys and digital inputs Total Prevents resetting the total manually Gtotal Prevents resetting the ...

Страница 14: ...umper selectable for 24 10 or 5 VDC supply internal jumper J4 All models transmitter supply rated 25 mA max Refer to Transmitter Supply Voltage Selection P P on page 23 Channels Channel A Channel B Channel C Math channel Programmable Constants Constant P Adder 99 999 to 999 999 default 0 000 Constant F Factor 0 001 to 999 999 default 1 000 Math Functions Name Function Setting Addition A B P F Sunm...

Страница 15: ...lanking Total Display Total Overflow 0 to 999 999 automatic lead zero blanking Up to 999 999 999 with total overflow feature oF is displayed to the left of total overflow and LED is illuminated Total Decimal Points Up to five decimal places or none d ddddd d dddd d ddd d dd d d or dddddd Total decimal point is independent of rate decimal point Channel A and B decimal points programmed independentl...

Страница 16: ...Initialization When power is applied to the totalizer relays will reflect the state of the input to the totalizer USB Connection Function Programming only Compatibility USB 2 0 Standard Compliant Connector Type Micro B receptacle Cable USB A Male to Micro B Cable Driver Microsoft Windows XP Vista 7 8 10 Power USB port provides power to the totalizer DO NOT apply AC or DC power to the totalizer whi...

Страница 17: ...ces MeterView Pro Software Availability Download directly from totalizer or from www predig com download_software System Requirements Microsoft Windows XP Vista 7 8 10 Communications USB 2 0 for programming only USB A Male to Micro B Cable RS 485 to USB converter programming monitoring and data logging Configuration Configure totalizers one at a time Power USB port provides power to the totalizer ...

Страница 18: ...to 60 C T5 40 C to 65 C Certificate number Sira 12ATEX1182 IECEx Ex d IIC T Gb Ex tb IIIC T90 C Db IP68 Ta 40 C to C T6 40 C to 60 C T5 40 C to 65 C Certificate Number IECEx SIR 12 0073 Special Conditions for Safe Use Use suitably certified and dimensioned cable entry device and or plug The equipment shall be installed such that the supply cable is protected from mechanical damage The cable shall ...

Страница 19: ... opening the enclosure To access electrical connectors remove the 2 captive screws and then remove the electronics module Connectors are on the rear of the electronics module Unpacking Remove the totalizer from box Inspect the packaging and contents for damage Report damages if any to the carrier If any part is missing or the totalizer malfunctions please contact your supplier or the factory for a...

Страница 20: ...ting holes located in the cast in flanges In addition the internal electronic assembly can be rotated to allow the enclosure to be mounted in any position To mount the totalizer to a wall follow these instructions Prepare a section of wall approximately 7 x 8 5 178 mm x 216 mm for totalizer mounting by marking with a pencil the mounting holes shown in Figure 1 on the wall Select the appropriate mo...

Страница 21: ...it This kit includes two U bolts the necessary hardware and is available in zinc plated steel PDA6848 and 316 stainless steel PDA6848 SS To mount the totalizer using a U Bolt kit follow these instructions Orient the groove on the back of the instrument with the pipe and secure it to the pipe with the two U bolts and hardware provided Vertical Pipe Mounting Horizontal Pipe Mounting ...

Страница 22: ...rView Pro Installation 1 Connect one end of the provided USB cable to the totalizer and the other end to the computer The computer will automatically install the driver software it needs to talk to the totalizer Follow the on screen instructions and allow sufficient time for the process to complete This can take a few minutes If the process is interrupted then it could leave the system in an unsta...

Страница 23: ...national state and local codes to prevent damage to the totalizer and ensure personnel safety Static electricity can damage sensitive components Observe safe handling precautions for static sensitive components Use proper grounding procedures codes If the instrument is installed in a high voltage environment and a fault or installation error occurs high voltage may be present on any lead or termin...

Страница 24: ...PD8 6262 7H0 the upper set of connectors RELAYs MA OUT are not present Figure 5 PROVU Electronics Module Layout USB Connection Figure 6 USB Connection DO NOT disconnect the RJ45 M LINK connector cable Otherwise the instrument will not function properly When using the USB connection the totalizer should only be connected to a computer when both devices are in a non hazardous area ...

Страница 25: ...ing buttons or MeterView Pro software Current mA Connections The following figures show examples of current connections INPUT SIGNALS Figure 8 2 Wire Transmitters Powered by Internal Supply INPUT SIGNALS Figure 9 3 Wire Transmitters Powered by Internal Supply INPUT SIGNALS Figure 10 Transmitter Powered by External Supply INPUT SIGNALS Figure 11 Self Powered Transmitters The current input is protec...

Страница 26: ... each totalizer must be provided with its own unique address The meter address Slave ID can be programmed between 1 and 247 The transmit delay can be set between 0 and 199 ms The parity can be set to even odd or none with 1 or 2 stop bits To change the meter address 1 Press and hold the Menu button for three seconds to access Advanced Features menu of the totalizer 2 Press Up arrow until Serial SE...

Страница 27: ...en closure across F4 and COM or with an active low signal applied to F4 It can be used for remote operation of front panel buttons to acknowledge reset relays reset totals or to reset max min values See Function Keys Digital I O Available Settings on page 60 for a complete list of capabilities Figure 17 F4 Digital Input Connections Remote Programming The totalizer can be operated via the programmi...

Страница 28: ...de energized preventing power from flowing to the Control Relay and the load Figure 21 Interlock Connections Switching Inductive Loads The use of suppressors snubbers is strongly recommended when switching inductive loads to prevent disrupting the microprocessor s operation The suppressors also prolong the life of the relay contacts Suppression can be obtained with resistor capacitor RC networks a...

Страница 29: ...gnal connections have been completed and verified apply power to the totalizer LED Status Indicators LED State Indication 1 4 Steady Alarm condition based on set and reset points independent of relay status in certain configurations Available on all totalizer configurations including those without relays installed 1 4 Flashing Relay interlock switch open 1 4 M Flashing Relay in manual control mode...

Страница 30: ...ous area These buttons can be disabled for security by selecting DISABLE on the switch labeled NO CONTACT BUTTONS located on the connector board To actuate a button press one finger to the glass directly over the marked button area Then retract finger more than three inches from the glass before pressing the next button When the cover is removed the four mechanical buttons located next to the sens...

Страница 31: ... menu for channel B Inp 1 Input 1 Calibrate input 1 signal or program input 1 value Dis 1 Display 1 Program display 1 value Display Parameter Action Setting Description Inp 2 Input 2 Calibrate input 2 signal or program input 2 value up to 32 points Dis 2 Display 2 Program display 2 value up to 32 points Error Error Error calibration not successful check signal or programmed value tsetup Total setu...

Страница 32: ...otal units B Alternate display of channel B total and total units D tab Display total A and B Alternate display of channel A total and channel B total Display Parameter Action Setting Description D TAbC Display total A B and math channel C Alternate display of channel A total channel B total and math result channel C nm bus Display Modbus Display Modbus input register D off Display off Display bla...

Страница 33: ...t low Press Enter to reset min display Rst HL Reset high low Press Enter to reset max min displays Tot a Reset total A Press Enter to reset channel A total Tot b Reset total B Press Enter to reset channel B total Gtot a Reset grand total A Press Enter to reset channel A grand total Gtot b Reset grand total B Press Enter to reset channel B grand total Tot ab Reset totals A and B Press Enter to rese...

Страница 34: ...ettings are saved to memory only after pressing Enter The display moves to the next menu every time a setting is accepted by pressing Enter Setting Numeric Values The numeric values are set using the Right and Up arrow buttons Press Right arrow to select next digit and Up arrow to increment digit value The digit being changed is displayed brighter than the rest Press and hold up arrow to auto incr...

Страница 35: ...he totalizer will accept for channel A and channel B 2 Units for A B rate total grand total and C 3 Decimal positions for A B rate total and grand total and C 4 Program the totalizer using the scale calibrate total functions 5 Display parameters and intensity 6 Relay assignments and operation 7 4 20 mA analog output scaling Press the Menu button to exit at any time ...

Страница 36: ...r now functions as a PD8 6060 Dual Input Process Meter for parameters that affect that channel We strongly suggest that you download and use the PD8 6060 instruction while in this mode of operation Setting the Rate Total Grand Total Units Tags units Enter the channel A and B rate total grand total and math channel C units or custom tags that will be displayed if alternating units is selected in th...

Страница 37: ...librated to NIST standards so for initial setup it is recommended to use the SCALE function The Program menu contains the following menus 1 Scale channel A and B without a signal source 2 Calibrate channel A and B with a calibrated signal source 3 Channel A and B total time base conversion factors 4 Channel A and B grand total time base conversion factors 5 Channel A and B reset modes for total gr...

Страница 38: ... then set the input signal value and display value for each of the scaling points default is two Scaling the Totalizer for Channel A SCal A Scaling the Totalizer for Channel B SCal B For instructions on how to program numeric values see Setting Numeric Values page 34 Error Message Error An error message indicates that the calibration or scaling process was not successful After the error message is...

Страница 39: ...llons Total Grand Total Setup tsetup The time base and total conversion factor and grand total conversion factor for input channels A and B are located in the Totalizer Setup menu The time base is based on the rate of flow Total grand total conversion factors for channel A and B are programmed independently The total and grand total have their own independent settings This means that one can be di...

Страница 40: ...s Note The C sum of total A total B displayed with the selection d tABC is different than the math channel C calculated under the Math menu functions Example C Rate Ch A Rate Ch B Display line 2 Line 2 can be programmed to display 1 All options for display line 1 2 Off with no display d ofF 3 Engineering units for any single channel total or grand total Display Parameter Menu After setting up the ...

Страница 41: ...lock feature 3 Set point 4 Reset point 5 Fail safe operation a On enabled b Off disabled 6 Time delay a On delay 0 999 9 seconds b Off delay 0 999 9 seconds 7 Relay action for loss break of 4 20 mA input ignore on off Setting the Relay Assignment asSign Relays may be assigned to Channel A rate total or grand total Channel B rate total or grand total Channel C Math channel or Modbus input Setting t...

Страница 42: ...ntly for each relay Select on to enable or select off to disable fail safe operation Programming Time Delay The On and Off time delays may be programmed for each relay between 0 and 999 9 seconds The relays will transfer only after the condition has been maintained for the corresponding time delay The On time delay is associated with the set point The Off time delay is associated with the reset po...

Страница 43: ...gnal must go below the set point and then go above it Low Alarm Operation Set Reset For Manual reset mode ACK can be pressed anytime to turn off relay To detect a new alarm condition the signal must go below the set point and then go above it High Alarm with Fail Safe Operation Set Reset Note Relay coil is energized in non alarm condition In case of power failure relay will go to alarm state Low A...

Страница 44: ... elapsed the On time delay timer resets and the relay does not change state The same principle applies to the Off time delay Note If Automatic or Manual A nmAn reset mode is selected the LED follows the reset point and not the relay state when the relay is acknowledged Total Relay Sampling Operation When the total reaches the preset the relay trips and the sample time starts After the sample time ...

Страница 45: ...y Sampling Operation When the signal crosses the set point the relay trips and the sample time starts After the sample time has elapsed the relay resets The cycle repeats every time the set point is crossed going up for high alarms and going down for low alarms The sample time can be programmed between 0 1 and 5999 9 seconds ...

Страница 46: ...installed and provide status indication for the following LED Status 1 Alarm 1 2 Alarm 2 3 Alarm 3 4 Alarm 4 The totalizer is supplied with four alarm points that include front panel LEDs to indicate alarm conditions This standard feature is particularly useful for alarm applications that require visual only indication The LEDs are controlled by the set and reset points programmed by the user When...

Страница 47: ...ormal Off Off Latching Relay LatcH In this application the totalizer is set up for manual reset at any time Acknowledging the alarm even if the alarm condition is still present resets the relay and turns off the LED Manual reset any time Condition LED Relay Normal Off Off Alarm On On Ack Off Off Latching Relay with Clear Lt Clr In this application the totalizer is set up for manual reset only afte...

Страница 48: ...3 and 4 are set up for low and high alarm indication Set and Reset Point Programming Relay Set Point Reset Point Function 1 30 000 10 000 Controls pump 1 2 35 000 5 000 Controls pump 2 3 4 000 9 000 Controls low alarm 4 40 000 29 000 Controls high alarm Pump Alternation Operation 1 Pump 1 turns on when level reaches 30 000 when level drops below 10 000 pump 1 turns off 2 The next time level reache...

Страница 49: ...ample Relays 1 2 are configured to energize their front panel LEDs are steady on when SW1 SW2 switches above are closed If the contacts to these digital inputs are opened the corresponding front panel LEDs flash indicating this condition The processes being controlled by the interlock relay will stop and will re start only after the interlock relay is re activated by the digital inputs switches No...

Страница 50: ...Numeric Values on page 34 Analog Output Value for Loss of 4 20 mA Input Loop Break on page 58 Reset Menu reset The Reset menu is used to reset the maximum peak value of Ch A and Ch B rate rst Hi minimum valley reading of Ch A and Ch B rate rst Lo both high and low value of Ch A and Ch B rate rst HL Ch A total tot A or Ch B total tot B Ch A grand total Gtot A or Ch B grand total Gtot B both Ch A an...

Страница 51: ...g the password 050873 Once the Grand Total has been programmed as non resettable the feature CANNOT be disabled Making Changes to a Password Protected Totalizer If the totalizer is password protected the totalizer will display the message Locd Locked when the Menu button is pressed Press the Enter button while the message is being displayed and enter the correct password to gain access the menu Af...

Страница 52: ...grammable exponent or round horizontal tank function Ch A Channel A Select menu for channel A Advanced Features Menu Display Messages Display Parameter Action Setting Ch b Channel B Select menu for channel B Linear Linear Set meter for linear function and select number of linearization points No pts Number of points Set the number of linearization points default 2 Square Square root Set meter for ...

Страница 53: ...ange Program mA output for display overrange u rang Underrange Program mA output for display underrange nmAx Maximum Program maximum mA output allowed nmin Minimum Program minimum mA output allowed User User I O Assign function keys and digital I O F1 F1 function key Assign F1 function key F1 F2 F3 F4 F4 digital input Assign F4 function digital input dI I Digital input 1 Assign digital input 1 4 d...

Страница 54: ...ding selected This setting affects the last two digits regardless of decimal point position See examples below Rounding Selection Actual Value Display Value Actual Value Display Value 1 12 022 12 022 12 023 12 023 5 12 022 12 020 12 023 12 025 10 12 024 12 020 12 025 12 030 Modbus RTU Serial Communications serial The totalizer is equipped with serial communications capability as a standard feature...

Страница 55: ...function provides a display that is linear with respect to the input signal Square Root Linearization Square The square root function is used to calculate flow measured with a differential pressure transmitter The flow rate is proportional to the square root of the differential pressure Scale the totalizer so that the low input signal e g 4 mA is equal to zero flow and the high input signal e g 20...

Страница 56: ...i Multiplication C A B P F DiVide Divide C A B P F Hi ab Max of A or B C High value of channel A or B P F Lo ab Min of A or B C Low value of channel A or B P F Drauw Draw C A B 1 F uw Avg Weighted avg C B A F A ratio Ratio C A B F Ratio2 Ratio 2 C B A A P F Concen Concentration C A A B F Sunm t Sum total C tA tB P F Sunmgt Sum grand total C GtA GtB P F Dif t Difference of total C tA tB P F Dif gt ...

Страница 57: ...alizer Count Up Down Count The totalizer count up down menu may be used to program the total and grand total to either count up from 0 when reset or count down from a programmed value when reset Total and grand total may have their countdown numbers programmed individually from 0 to 999999 ...

Страница 58: ... is used to force the analog output to go to a user specified mA value if a break condition is detected in the 4 20 mA input loop Selecting Ignore causes the mA output to go to the minimum value Analog Output Calibration To perform the analog output calibration it s recommended to use a milliamp totalizer with a resolution of at least 0 1 µA to measure the output current The values saved internall...

Страница 59: ... I O connector to access most of the menus or to activate certain functions immediately e g reset totals reset max min hold relay states etc This allows the totalizer to be greatly customized for use in specialized applications The four digital outputs can be assigned to a number of actions and functions executed by the totalizer i e alarms relay acknowledgement reset totals reset max min or max m...

Страница 60: ...are displayed on display line 1 Ln1 Hi Display maximum channel A display value on line 1 Ln1 Lo Display minimum channel A display value on line 1 Ln1 HL Display maximum minimum channel A display values on line 1 Ln2 Hi Display maximum channel B display value on line 2 Ln2 Lo Display minimum Channel B display value on line 2 Ln2 HL Display maximum minimum channel B display values on line 2 Function...

Страница 61: ...lay stops flashing a number is displayed with the leftmost digit brighter than the rest The bright digit is the active digit that can be changed by pressing the Up arrow button Press the Right arrow button to move to the next digit 7 Set the display value to correspond to the input signal being calibrated typically 4 000 mA 8 The display moves to the high input calibration C Hi Apply the high inpu...

Страница 62: ...rdous area These buttons can be disabled for security by selecting DISABLE on the switch labeled NO CONTACT BUTTONS located on the connector board To actuate a button press one finger to the glass directly over the marked button area Then retract finger more than three inches from the glass before pressing the next button When the cover is removed the four mechanical buttons located next to the se...

Страница 63: ... power up 2 To reset max min press Right arrow F1 button The max min displays are reset to actual values 3 Press Menu to exit max min display reading Total Reset Capabilities The user may reset the total via a SafeTouch button the F4 terminal at the back of the meter an external contact closure on the digital inputs automatically via user selectable preset value and time delay or through serial co...

Страница 64: ...D Test menu led t 3 Press the Enter button to activate the LED Test The totalizer will cycle through all digits decimal points and relay indicators to enable the operator to check that all LEDs are functioning properly 4 Press the Enter button again to access the Information menu info or press the Menu button to return to Run Mode Determining Software Version To determine the software version of a...

Страница 65: ...actor Ch A T CF 1 000 Grand total conversion factor Ch A Gt CF 1 000 Time base channel B Tbase Sec Factory Defaults User Settings Parameter Display Default Setting Total conversion factor Ch B T CF 1 000 Grand total conversion factor Ch B Gt CF 1 000 Total reset Treset Total reset channel A T rst Manual Grand total reset Ch A Gt rst Manual Total reset channel B T rst Manual Grand total reset Ch B ...

Страница 66: ...out t byt 010 0 1 sec Math nmath Math channel C Sunm Sum Adder constant P Adder 0 000 Factor constant F Factor 1 000 User user F1 function key F1 Reset max min F2 function key F2 Line 1 Max Min F3 function key F3 Acknowledge relays F4 function digital input F4 Acknowledge relays Digital input 1 DI 1 Menu Digital input 2 DI 2 Right arrow Digital input 3 DI 3 Up arrow Digital input 4 DI 4 Enter Digi...

Страница 67: ...y from showing a negative value set the low flow cutoff to a value greater than zero Totalizer displays error message during calibration Error Check 1 Signal connections 2 Input selected in Setup menu 3 Minimum input span requirements Totalizer displays 1 999999 2 99999 Check 1 Input selected in Setup menu 2 Corresponding signal at Signal connector Display is unstable Check 1 Input signal stabilit...

Страница 68: ...Instrument address baud rate 3 Program address baud rate If both data status LEDs TX and RX are off when trying to communicate Remove all unnecessary cables and instruments from the bus Try getting the system to work with only one device to ease troubleshooting and then expand the system one device at a time Communications slow Increase the baud rate Random communication errors 1 Increase the TX d...

Страница 69: ...69 ...

Страница 70: ... 655 8990 www predig com LIM8 6262_F SFT039 Ver 3 100 up 07 22 Contact Precision Digital Technical Support Call 800 610 5239 or 508 655 7300 Fax 508 655 8990 Email support predig com Sales Support Call 800 343 1001 or 508 655 7300 Fax 508 655 8990 Email sales predig com Place Orders Email orders predig com For the latest version of this manual please visit www predig com ...

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