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PLATINUM

Series Controllers User

’s

Guide

M5451

Omega Engineering | www.omega.com

Reference Section: Initialization Mode (INIt)

6.1.4.1

Ratiometric Inputs

Ratiometric inputs allow applying an external reference voltage (Vref) used by the Analog / Digital
converter and the measured signal level directly proportional to the reference voltage. The external
reference voltage must be in the range of 1.5

–

2.5 Vdc and applied between APWR and ARTN. An

internal 2.0 k ohm resistor is applied between the APWR and ARTN terminals.

Reference
Voltage

Common
Mode
Voltage

ARTN

AIN +

AIN -

Measured Signal as %
of Reference Voltage

Содержание CN8EPt

Страница 1: ...CN32Pt CN16Pt CN16PtD CN8Pt CN8PtD CN8EPt Temperature Process Controllers...

Страница 2: ...pecifications without notice omega com info omega com Servicing North America U S A Omega Engineering Inc Headquarters Toll Free 1 800 826 6342 USA Canada only Customer Service 1 800 622 2378 USA Cana...

Страница 3: ...guration INIt INPt tHRM 28 6 1 4 Process Input Type Configuration INIt INPt PRoC 29 6 2 TARE INIt tARE 34 6 3 LINR INIt LINR 34 6 4 Display Reading Formats INIt RdG 36 6 4 1 Decimal Point Format INIt...

Страница 4: ...V 50 7 3 3 Alarm High Reference PRoG ALM 1 ALM 2 tyPE ALR H 50 7 3 4 Alarm Low Reference PRoG ALM 1 ALM 2 tyPE ALR L 51 7 3 5 Alarm Color PRoG ALM 1 ALM 2 A CLR 51 7 3 6 Alarm High High Low Low Offset...

Страница 5: ...ing oPER PEAk 72 8 10 Standby Mode oPER Stby 72 8 11 Standby Mode oPER tARE 72 9 Specifications 73 9 1 Inputs 73 9 2 Control 73 9 3 Outputs 74 9 4 Communications USB Standard Optional Serial and Ether...

Страница 6: ...51 Omega Engineering www omega com 6 Introduction Figure 12 Generic Cascade Control Diagram 63 Figure 13 Heat Exchanger with Cascade Control 63 Figure 14 Ramp Soak Process Variable Period of Time 67 F...

Страница 7: ...s A quick overview of how to navigate the PLATINUMTM Series menu structure follows in Section 4 This is followed in Section 5 by the complete PLATINUMTM Series meter menu tree Remember not all command...

Страница 8: ...to 16 Ramp and Soak segments per Ramp and Soak program eight each with auxiliary event actions available with each segment Up to 99 Ramp and Soak programs can be stored and multiple Ramp and Soak prog...

Страница 9: ...protection against excessive energy being drawn from the main supply in case of a fault in the equipment an overcurrent protection device must be installed Do not exceed the voltage rating on the labe...

Страница 10: ...led 3 Wiring Instructions 3 1 Back Panel Connections Figure 1 CN8Pt CN8DPt and CN8EPt Models Back Panel Connections No Isolated Output Expansion Board Installed Figure 2 CN8Pt CN8DPt and CN8EPt Models...

Страница 11: ...Power Connections For the low voltage power option maintain the same degree of protection as the standard high voltage input power units 90 240 Vac by using a Safety Agency Approved DC or AC source wi...

Страница 12: ...nd remote Setpoint 2 AIN Analog positive input 3 AIN Analog negative input 4 APWR Analog power currently only used for 4 wire RTDs 5 AUX Auxiliary analog input for remote Setpoint 6 EXCT Excitation vo...

Страница 13: ...kup with Internal and External Excitation Figure 7 Process Voltage Wiring Hookup with optional Ratiometric Voltage connection 1 2 3 4 5 6 7 8 9 10 RTD 100 4 WIRE RTD 100 3 WIRE RTD 100 2 WIRE requires...

Страница 14: ...n contact side Table 3 Output Type Designations for Base Output Connector Code Output Type 1 3A Mechanical single pole single throw SPST mechanical relay 2 1A Solid state relay SSR 3 3A Mechanical sin...

Страница 15: ...C IDC Isolated Analog V Gnd V Gnd V C Gnd 116 SPST SPST Isolated Analog N O Com N O Com V C Gnd 226 SSR SSR Isolated Analog N O Com N O Com V C Gnd Table 6 Definitions for Abbreviations in Table 4 Cod...

Страница 16: ...es at a given level down in the Section 4 menu structure tables The RIGHT button also scrolls numerical values up with overflow to 0 for the flashing digit selected The ENTER button selects a menu ite...

Страница 17: ...c These settings can be password protected Programming Mode These settings are frequently changed They include Set points Control Modes Alarms etc These settings can be password protected Operating Mo...

Страница 18: ...alibration curve 100 385 5 385 calibration curve 500 385 t 385 calibration curve 1000 392 392 calibration curve 100 391 6 391 6 calibration curve 100 tHRM 2 25k 2250 thermistor 5k 5000 thermistor 10k...

Страница 19: ...use Note The Manual Live inputs repeat from 1 10 represented by n MANL Rd n ____ Low display reading IN n ____ Manual input for Rd n LIVE Rd n ____ Low display reading IN n ____ Live Rd n input ENTER...

Страница 20: ...ntinuously every sec dAt F StAt No yES Includes Alarm status bytes RdNG yES Includes process reading No PEAk No yES Includes highest process reading VALy No yES Includes lowest process reading UNIt No...

Страница 21: ...AIt Power on oPER Mode ENTER to run RUN RUN s automatically on power up RUN M dSbL ENTER in Stby PAUS StoP runs ENbL ENTER in modes above displays RUN SP LM SP Lo ____ Low Setpoint limit SP HI ____ Hi...

Страница 22: ...for PRoG Mode 5 2 Programming Mode Menu PRoG The following table maps the Programming Mode PRoG navigation Level 2 Level 3 Level 4 Level 5 Level 6 Notes SP1 ____ Process goal for PID default goal for...

Страница 23: ...dE oF ____ Delay turning off Alarm sec default 0 0 ALM 2 Alarm 2 oUt1 oUt1 is replaced by output type Note This submenu is the same for all other outputs ModE oFF Output does nothing PId PID Control...

Страница 24: ...time for autotune tUNE StRt Initiates autotune after StRt confirmation GAIN _P_ ____ Manual Proportional Band setting _I_ ____ Manual Integral Factor setting _d_ ____ Manual Derivative Factor setting...

Страница 25: ...eplaces below MRt ____ Time for Ramp number default 10 MRE oFF Ramp events on for this segment oN Ramp events off for this segment MSP ____ Setpoint value for Soak number MSt ____ Time for Soak number...

Страница 26: ...User s Guide M5451 Omega Engineering www omega com 26 Complete Menu Structure Level 2 Level 3 Level 4 Notes Stby Standby Mode outputs and Alarm conditions disabled displays Stby tARE TARE option only...

Страница 27: ...INIt VER N 46 6 12 Update Firmware Revision INIt VER U 47 6 13 Reset to Factory Default Parameters INIt F dFt 47 6 14 Password Protect Initialization Mode Access INIt I Pwd 47 6 15 Password Protect P...

Страница 28: ...igate to the desired setting Settings include the following 3 wI Three wire RTD factory default 4 wI Four wire RTD 2 wI Two wire RTD Select the indicated option 6 1 2 2 Calibration Curve INIt INPt Rtd...

Страница 29: ...The 05 input only supports dIFF and RtIo input types SNGL Bipolar Single Ended voltage between A and ARTN connections dIFF Differential voltage between A and A connections RTIo Ratiometric reading be...

Страница 30: ...puts set the selected scaling parameter to the desired value Confirm the value for the selected scaling parameter in Manual Mode MANL or read and accept the input signal for either IN 1 or IN 2 in Liv...

Страница 31: ...rence voltage Vref used by the Analog Digital converter and the measured signal level directly proportional to the reference voltage The external reference voltage must be in the range of 1 5 2 5 Vdc...

Страница 32: ...e voltage difference between terminals 2 AIN and 3 AIN is measured with respect to the externally applied voltage reference applied between terminal 1 ARTN and terminal 4 APWR The Excitation voltage s...

Страница 33: ...defined by a SLOPE or gain and an OFFSET As shown below X1 Y1 and X2 Y2 define two points on a line that has a certain SLOPE and OFFSET Knowing the SLOPE and OFFSET allows determining the OUTPUT valu...

Страница 34: ...irs used to internally calculate 10 gain offset parameters The LINR option is only available on Process inputs Select the Number of Points N PNt The N Pts option determines how many of the Reading Inp...

Страница 35: ...e linearization of complex profiles This feature is often used to transform weight values into volume or to transform primary measurements into derived measurements such as rate of change in temperatu...

Страница 36: ...process inputs While this parameter sets the default format the numeric display will auto range automatically shift the decimal point if necessary Navigate to the desired setting Settings include the...

Страница 37: ...e absolute value being read or the value s used for control functions Select the indicated option 6 4 4 Filter INIt RdG FLtR Select the Filter FLtR parameter Filtering averages multiple input analog t...

Страница 38: ...nfiguration defined by PRoG ALM 1 determines the state of the annunciator The annunciator turns on when the Alarm condition exists factory default for ANN 1 ALM 2 The configuration defined by PRoG ALM...

Страница 39: ...ude the following USb Universal Serial Bus USB communications EtHN Ethernet communications configuration SER Serial either RS232 or RS485 communications configuration Select the indicated option Navig...

Страница 40: ...ollowing settings o StAt Alarm status bytes are sent with the data o RdNG Sends the process reading o PEAk Sends the highest process reading so far o VALy Sends the lowest process reading so far o UNI...

Страница 41: ...setting Settings include the following 232C Allows one to one serial communications factory default 485 Allows multiple devices to operate on a single pair of wires Select the indicated option 6 6 3 2...

Страница 42: ...Stby PAUS or StoP Modes SP LM Setpoint limits can be set to limit the values that can be entered LPbk Loop break enable disable and timeout value o CRk Open circuit detection enable disable Select th...

Страница 43: ...gs include the following dSbL No loop break timeout protection factory default ENbL Set loop break timeout value Select the indicated setting If ENbL Set the loop break timeout value in minutes and se...

Страница 44: ...AT parameter When E LAT is enabled if any output error is detected output break detection the unit will be put in fault mode Manual intervention is required to clear the error When E LAT is disabled i...

Страница 45: ...reading Set the Manual Thermocouple Calibration Offset value in degrees Confirm the Offset value and pair it with the current input reading 6 8 3 Manual Temperature Calibration Offset and Slope Adjust...

Страница 46: ...t can then be loaded back into the unit using the INIt LoAd command This capability can be especially useful for editing complex multi ramp and soak programs For more information on the configuration...

Страница 47: ...set 6 14 Password Protect Initialization Mode Access INIt I Pwd Select the Password Protect Initialization Mode Access I Pwd function Navigate to the desired setting Settings include the following No...

Страница 48: ...nt Configuration PRoG RM SP 61 7 7 Multi Ramp Soak Mode Parameters PRoG M RMP 64 7 1 Setpoint 1 Configuration PRoG SP1 Select the Setpoint 1 SP1 parameter Set the process goal value for PId or oN oF c...

Страница 49: ...oN Time delay for Alarm trigger unless the condition persists default 1 0 s dE oF Time delay for cancelling Alarms after being triggered prevents Alarm chatter default 0 0 s Select the indicated sett...

Страница 50: ...s include the following AbSo Alarm is triggered using calculations based on the absolute values of ALR H or ALR L used as specified by the tyPE parameter d SP1 Alarm is triggered using calculations ba...

Страница 51: ...igh Low Low Offset Value PRoG ALM 1 ALM 2 HI HI Select the Alarm Offset Value HI HI parameter This parameter allows an offset to be added to the Alarm trigger point s which will flash the display when...

Страница 52: ...t the Alarm Normally Open or Normally Closed CtCL parameter Navigate to the desired option Options include the following N o Normally open output is activated when the Alarm condition is met factory d...

Страница 53: ...lay number 4 dtR1 Double Throw Mechanical Relay number 1 dtR2 Double Throw Mechanical Relay number 2 SSR1 Solid State Relay number 1 SSR2 Solid State Relay number 2 SSR3 Solid State Relay number 3 SSR...

Страница 54: ...indicated setting 7 4 1 1 Turn Off Output Channel PRoG oUt1 oUt6 ModE oFF Turn off this output oFF 7 4 1 2 PID Control Mode PRoG oUt1 oUt6 ModE PId Select PID Control Mode PId for this output factory...

Страница 55: ...below Setpoint factory default dRCt Off when Process Value is Setpoint and on when Process Value is Setpoint e g cooling deadband is applied above Setpoint For dEAd set the desired value The default i...

Страница 56: ...G oUt1 oUt6 ModE SE oN Activate Output to Soak Event Mode SE oN during Soak segments in Ramp and Soak programs when the Soak Event flag is set for that Soak segment This can be used to turn on auxilia...

Страница 57: ...the value 7 4 3 Analog Output Range PRoG oUt1 oUt6 RNGE Select the Output Range RNGE parameter This menu choice is only available for analog outputs The RNGE parameter is used for both Control and Re...

Страница 58: ...Direction ACtN parameter Navigate to the desired setting Settings include the following RVRS Reverse Action Increase to SP1 such as heating factory default dRCt Direct Action Decrease to SP1 such as c...

Страница 59: ...according to the following equation On P e I SUM e d de dt On Power for Analog Outputs or On Width for PWM Outputs e Error Function Setpoint Process Value SUM e A summation of the Error Function over...

Страница 60: ...eds to start from a value other than zero i e PWM delivery to a motor fan On PID Offset Set the desired value Confirm the value 7 5 7 Deadband PRoG PId dEAd Select the Dead band Overlap band dEAd para...

Страница 61: ...t dSbL Disables fuzzy logic adaptive tuning Select the indicated setting 7 6 PID 2 Configuration PRoG PId 2 Note PID 2 is an independent control channel with separate configuration parameters Both PID...

Страница 62: ...t signal range Select the desired input signal range to proceed to the scaling parameters starting with RS Lo Navigate to the desired setting Settings include the following RS Lo Minimum Setpoint valu...

Страница 63: ...s the input to the primary or master controller and the faster responding variable is used as the input to the secondary or slave controller The output of the primary controller is scaled to be used a...

Страница 64: ...E for further information on this For an overview of Ramp and Soak programming including examples see Section 7 7 8 More on Multi Ramp Soak Programming Note When setting up multidirectional ramp and s...

Страница 65: ...ached within the specified Ramp Time the unit will continue to ramp until that setpoint is reached The additional ramp time required is subtracted from the soak time so that the specified cycle time r...

Страница 66: ...r This segment number selection will replace the digit in all of the ramp and soak control parameters for that segment listed below MRt MSt etc as viewed on the unit s display This will help keep trac...

Страница 67: ...1 Overview A key feature of the Ramp and Soak mechanism is provided by the ability to link ramp soak segments together to create a chain of sequences This allows sequences of up to 792 Ramp Soak pairs...

Страница 68: ...1 second increments and may span from 1 second to 99 hours 59 minutes 59 seconds Internally the time values are tracked within 0 1 second intervals The Ramp and Soak function attempts to provide a con...

Страница 69: ...Run Mode will automatically be entered and activated at unit power on if the Power on Confirmation 6 7 1 Power On Confirmation INIt SFty PwoN parameter is set to dSbL The process value is displayed i...

Страница 70: ...be manually changed Navigate to the desired Manual Operating Mode The choices are as follows M CNt Manually vary the control output s M INP Manually simulate change in the process input Select the de...

Страница 71: ...UN Mode or to displaying RUN depending on the Operating Safety parameter setting 6 7 2 Operating Mode Confirmation INIt SFty oPER 8 7 Clear Latched Alarms oPER L RSt Select the Clear Latched Alarms co...

Страница 72: ...k reading buffer 8 10 Standby Mode oPER Stby Select Standby Mode Stby to disable outputs and Alarm conditions Stby is displayed until navigating elsewhere Navigate to any desired initialization or pro...

Страница 73: ...for 100 mV Process Voltage 1 M for other voltage ranges Process Current 5 Thermocouple 10 K max Temperature Stability RTD 0 04 C C TC at 25 C 77 F 0 05 C C cold junction compensation Process 50 ppm C...

Страница 74: ...65 Vac at 0 05 0 5 A Resistive Load continuous Isolated DC Pulse Isolated 10 Vdc at 20 mA Isolated Analog Isolated Proportional 0 10 Vdc or 0 20 mA 500 max Programmable for control or retransmission A...

Страница 75: ...IN Environmental Conditions All Models 0 50 C 32 122 F 90 RH non condensing External Fuse Required Time Delay UL 248 14 listed 100 mA 250 V 400 mA 250 V Low Voltage Option Time Lag IEC 127 3 recognize...

Страница 76: ...0 C 418 to 148 F 1 0 C 1 8 F 100 to 1300 C 148 to 2372 F 0 4 C 0 7 F RTD Pt 0 00385 100 500 1000 200 to 850 C 328 to 1562 F 0 3 C 0 5 F RTD Pt 0 003916 100 200 to 660 C 328 to 1220 F 0 3 C 0 5 F RTD P...

Страница 77: ...dc Analog Pulse to Inputs No Isolation Measurement Category I Category I includes measurements performed on circuits not directly connected to the Mains Supply power Maximum Line to Neutral working vo...

Страница 78: ...y OMEGA if the unit is found to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limite...

Страница 79: ...rs M U Turbine Paddlewheel Systems M U Totalizers Batch Controllers pH CONDUCTIVITY M U pH Electrodes Testers Accessories M U Benchtop Laboratory Meters M U Controllers Calibrators Simulators Pumps M...

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