Omega C9000A SERIES User Manual
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Omega C9000A SERIES User Manual

Autotune temperature controller
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C9000A SERIES
Autotune Temperature Controller

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Summary of Contents for Omega C9000A SERIES

  • Page 1 User’ s Guide ® Shop online at omega.com e-mail: info@omega.com For latest product manuals: omegamanual.info C9000A SERIES Autotune Temperature Controller...
  • Page 2 Toll Free in United Kingdom: 0800-488-488 e-mail: sales@omega.co.uk It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS CN9000A SERIES MINIATURE AUTOTUNE TEMPERATURE CONTROLLER SECTION PAGE SECTION 1 INTRODUCTION......General Description........Available Models.......... SECTION 2 INSTALLATION....... Unpacking............. Cautions and Mounting Instructions..... Wiring............Typical Wiring Diagrams....... SECTION 3 OPERATION........General Considerations........ Controls and Indicators........ Default (Pre-Set) Settings......Getting Started..........

  • Page 4: Section Page

    TABLE OF CONTENTS (Cont'd) SECTION PAGE Negative Temperature Ranging....Manual Mode (Auto/Manual) Function .0 Option 4- 100)........... Park Mode........... 3.10 Linear Process Inputs......... 3.11 Second Output Operation......3.12 Details of Advanced Functions .26- .50..Table 3-6, Advanced Functions .26- .50... 3.13 Parameter Lock...........
  • Page 5 TABLE OF CONTENTS (Cont'd) SECTION PAGE Proportioning Time........Proportional Band........Integral (Reset) Time........Derivative (Rate) Time........ Derivative Approach Control....... Heating and Cooling........5.8.1 General Considerations......5.8.2 Cool Strategy for Heat-Cool Applications... 5.8.3 Setting Up Routine for Heat-Cool Control.. SECTION 6 CALIBRATION........ Display Offset..........
  • Page 6 This page is intentionally blank.

  • Page 7: Section 1 Introduction

    SECTION 1 INTRODUCTION 1.1 GENERAL DESCRIPTION ® The OMEGA CN9000A Series Miniature Autotune Microprocessor Controllers are designed for accurate, precise temperature control. They feature high accuracy and reliability, as well as sophisticated PID or Autotune PID with approach control (PDPI) for optimal control during start-up and steady-state operation.

  • Page 8: Available Models

    4-20 mA DC 0-10 VDC *SSD output is a Solid State Driver (5 Volt DC Pulse) designed to be used with a DC controlled solid state relay such as OMEGA's model number SSR240DC45 relay. Figure 1-1. CN9000A Model Number Information...
  • Page 9 TABLE 1-1 CN9000A MODEL NUMBER DETAILS MODEL INPUT OUTPUT 1 OUTPUT 2 CN9111A Relay Relay CN9112A Relay 5VDC SSD* CN9121A 5VDC SSD* Relay Thermocouple 2-Wire RTD CN9122A 5VDC SSD* 5VDC SSD* Linear Millivolt Signal CN9131A 1 A Triac Relay CN9141A 4-20 mA Relay CN9151A...
  • Page 10 BD90 CODE Output No. 2 1 3A Mech Relay 2 5VDC SSD CODES for Output No. 1 1 5A Mechanical Relay 2 5VDC Solid State Driver (Pulse) 3 1A Triac SSR 4 4-20 mA DC 5 0-10 VDC Figure 1-2. CN9000A Series Replacement Output Board Numbering Information TABLE 1-2 CN9000A REPLACEMENT OUTPUT BOARD DETAILS...

  • Page 11: Section 2 Installation

    Remove the Packing List and verify that you have received all equipment. If there are any questions about the shipment, please call the OMEGA Customer Service Department at 1-800-622-2378 or (203) 359-1660. Upon receipt of shipment, inspect the container and equipment for any signs of damage.
  • Page 12 CONFIGURATION CAUTION The controller functions are user selectable. It is therefore the user's responsibility to ensure that the controller configuration corresponds to the factory's requirements and is safe. Remove the parameter lock jumper to restrict tampering after configuration. MOUNTING INSTRUCTIONS The CN9000A is mounted in a panel through a 1.772"...

  • Page 13: Wiring

    5VDC Solid State Driver pulse output (designed for operating an external DC SSR such as an OMEGA SSR240DC45). Three other optional outputs are available using a plug-in replacement combination socket. These outputs are a 1A Triac SSR, 0 to 10VDC, or a 4 to 20 mA DC output.
  • Page 14 (Output 1) (Power) 1 A SSR, MECHANICAL RELAY 0-10V, 4-20 mA, SSD (PULSE) N.O. C. N.C. SSD (PULSE) N.C. C. N.O. + - MECHANICAL RELAY 6 5 4 3 (Output 2) (Input Signal) Figure 2-3. CN9000A, Rear View, Signal Connection Designations TERMINAL DESIGNATIONS AND SIGNAL CONNECTIONS 1 AC Power, 115 VAC 50/60 Hz (230 VAC, optional)

  • Page 15: Typical Wiring Diagrams

    Connections for Connections for Connections for 2-wire Pt 100/RTD Thermocouple 3-wire Pt 100/RTD Figure 2-4. Thermocouple and RTD Input Wiring 2.4 TYPICAL WIRING DIAGRAMS Figures 2-5 and 2-6 illustrate typical wiring of the CN9000A Controllers. (Standard controllers operate on 115VAC 50/60Hz. 230VAC operation is optional.) 115V±15% 50-60 Hz 5A (max...
  • Page 16 A noise suppression kit is available for use with 115VAC, OMEGA part no. 1821-101 (consists of an RC network or metal oxide varistor...

  • Page 17: Section 3 Operation

    SECTION 3 OPERATION 3.1 GENERAL CONSIDERATIONS The CN9000A is pre-set for control parameters that are suitable for many applications. The CN9000A can be operated with the default (pre-set) settings, or the default settings can be overridden by more appropriate control modes and parameters and/or enabling of the second setpoint, by programming the CN9000A through the front panel keys.
  • Page 18 TABLE 3-1 CONTROLS AND INDICATORS ITEM CONTROL/INDICATOR FUNCTION 1 LED Display The four-digit display normally shows process temperature to 1°C or 1°F resolution (for example, 197°F). However, if the CN9000A is set for a tenth degree resolution (up to 200°), the display shows the temperatures in 0.1°C or 0.1°F increments (for example, 197.3°F).
  • Page 19 TABLE 3-1 (Cont'd) ITEM CONTROL/INDICATOR FUNCTION All three Error Indicator LEDs are on when unit is in Manual or Park Mode. This LED is illuminated (green) 3 SP1 Output Indicator when the SP1 output is ON. 4 SP2 Output Indicator This LED is illuminated (red) when the SP2 output is ON or OFF, depending on mode of operation.

  • Page 20: Default (Pre-Set) Settings

    3.3 DEFAULT (PRE-SET) SETTINGS For ease of use in normal applications, the CN9000A has been pre-set with factory or Default settings (or Parameters). Section 3.5 discusses how to change these Default settings. These pre-set Parameters enable the instrument to operate in the PID Control Mode, with a single set point and slow cycle relay output.
  • Page 21 Refer to Table 3-2 for getting started with the commonly needed Default settings of the control parameters. Changing from the Default values will be covered in subsequent sections. To operate with Autotune Settings, refer to Section 5.1 or Appendix B. TABLE 3-2 OPERATION WITH DEFAULT SETTINGS STEP...

  • Page 22: Changing The Allowable Setpoint Default Range (Function .24)

    When the Default settings are not suitable for your application, the CN9000A can be tuned for optimum performance by the adjustment of control Parameters. Section 5 will provide the guidance needed to establish the appropriate settings. Alternatively, the Autotune Option can be used to enable the controllers microprocessor to attempt to calculate the optimum PID Parameters.
  • Page 23 Press and hold in ★ Repeatedly press to increase value (while pressing ★) Repeatedly press to decrease value (while pressing ★). Release ★ (and stop pressing button). Press the P button. The temperature is now displayed. The upper limit of the allowable setpoint has now been changed. The new allowable setpoint range can be checked by repeating Steps 1, 2, 3.

  • Page 24: Parameter Adjustments (Standard Functions)

    3.5 PARAMETER ADJUSTMENTS (STANDARD FUNCTIONS) To change the CN9000A's Default Parameters to new parameter settings, refer to this section and Section 3.6. All adjustable parameters are held in memory. There are two classes of Functions. Functions .0 through .25 are STANDARD FUNCTIONS that are used more often and are easily accessible to the user.

  • Page 25: Example Of Programming Functions. 0, .1,.2,.3

    3.5.1.1 Example of Programming Functions. 0, .1,.2,.3,-.23 STEP ACTION DISPLAY The following steps apply only to Functions .0,-.23. Section 3.6 covers more examples. Ensure that the jumper behind the lower front bezel is in the Parameter Setting Position (refer to Section 3.13). Note Functions .1, .2, .3 are not protected by the Parameter Lock Jumper.

  • Page 26: Example Of Programming Functions .19 & .2 (Sp2)

    3.5.1.2 Example of Programming Functions .19 & .2 (SP2) NOTE When using SP2 as a tracking second setpoint (deviation from first setpoint): Function .19, Options 1, 2, 3, or 7 will enable the second setpoint and Function .2 is to be used to set the differential value between the first and second setpoint.

  • Page 27: Example Of Programming Functions .24 And Special Case Of Function

    STEP ACTION DISPLAY Repeatedly To change from Function .19 Press to Function .2: until you see 0.2 Function (flashing) Press ★ To change to Option Mode: Option (flashing) To change from Option Press increase value number; can go down to -128°...

  • Page 28: Details Of Standard Function .0- .25

    STEP ACTION DISPLAY Press ★ To display maximum allowable setpoint: Press and hold To increase or decrease the in ★ and setpoint: simultaneously press to increase to decrease value To stop changing the setpoint: Release fingers Press P To get back to process temp (exit Function/Option Program Mode).
  • Page 29 TABLE 3-4 STANDARD FUNCTIONS .0 THROUGH.25 NOTE: For each Function, the "0" Option is the default setting! FUNCTION .0 OPERATING MODES (Autotune/Auto-manual) This allows Autotune to be selected; either AT (Autotune at start- up) or PT (Push to Tune at setpoint). Park Mode (Option 3) allows first output to be put on standby (turned off) while leaving the second output activated for alarm or cooling, as described in Section 3.9.
  • Page 30 TABLE 3-4 (Cont'd) FUNCTION .2 SETPOINT 2 ADJUST If Function .19 (Setpoint 2 Operation Selection) is set to Option 1, 2, 3 or 7, deviation from setpoint 1 is in 1° steps, up to 127° (12.7° in tenth degree resolution). The second setpoint tracks the first setpoint.
  • Page 31 TABLE 3-4 (Cont'd) FUNCTION .4 (Cont'd) CYCLE TIME/ON-OFF (OUTPUT 1) (Op#).(Fn#) Parameter/Comment 20 sec (Default setting) *1.4 1 sec *2.4 5 sec 10 sec 30 sec 60 sec Analog Outputs (4-20 mA DC or 0-10VDC only) ON/OFF 0.3 sec *9.4 2 sec *10.4 3 sec...
  • Page 32 TABLE 3-4 (Cont'd) FUNCTION .5 (Cont'd) PROPORTIONAL BAND/DEADBAND (OUTPUT 1) (Op#).(Fn#) Parameter/Comment SP1 Proportional SP1 Hysteresis in ON/OFF band/Gain mode (Deadband) 2.5% x range 1.25% x span 0.5% 0.25% 0.5% 1.5% 2.5% 1.5% 0.75% 10.5 11.5 3.5% 12.5 13.5 14.5 100% *15.5 AT value...
  • Page 33 TABLE 3-4 (Cont'd) FUNCTION .6 (Cont'd) DERIVATIVE TIME/RATE (OUTPUT 1) (Op#).(Fn#) Parameter/Comment 200 s 1 sec 2 sec 3 sec 10.6 7 sec 11.6 15 sec 12.6 20 sec 13.6 35 sec 14.6 75 sec *15.6 AT value *Note: You will not see 15.6 on the display. The actual AT value, in seconds, will appear at the left side of the display.
  • Page 34 TABLE 3-4 (Cont'd) FUNCTION .8 INTEGRAL TIME (OUTPUT 1) Also known as Automatic Reset. Refer to Section 5.5. (Op#).(Fn#) Parameter/Comment 5 min (300 sec) OUT: Manual Reset (Function .1 used) 0.5 min (30 sec) 1 min (60 sec) 2 min (120 sec) 3 min (180 sec) 10 min (600 sec) 18 min (1080 sec)
  • Page 35 TABLE 3-4 (Cont'd) FUNCTION .10 (Cont'd) CYCLE TIME/ON-OFF (OUTPUT 2) (Op#).(Fn#) Parameter/Comment 4.10 20 sec 5.10 60 sec 6.10 Not Used 7.10 30 sec *8.10 2 sec *9.10 3 sec *10.10 7 sec 11.10 14 sec 12.10 45 sec Non-linear ranges for Cool Strategy: 13.10 0.15-10 sec 14.10...
  • Page 36 TABLE 3-4 (Cont'd) FUNCTION .12 LOOP BREAK ALARM TIME Controller detects a break in the control loop caused by a sensor short or heater break. This is the amount of time the controller will wait for the control action to have an affect before an error message is given (EE3).
  • Page 37 TABLE 3-4 (Cont'd) FUNCTION .15 RESETTING FUNCTION'S .0 -.24 TO DEFAULT SETTINGS Allows quick reset of all Functions to Default settings. Only Function .22 (°C/°F) and Function .9 (Sensor Offset) will not be reset. NOTE: 'Hidden' Function 15/Option 5 resets all functions, except Function .22.
  • Page 38 TABLE 3-4 (Cont'd) FUNCTION .16 (Cont'd) INPUT SENSOR SELECT & RANGE TABLE LINEAR PROCESS INPUTS (SEE SECTION 3.10) (Op#).(Fn#) Input Display 11.16 0-20 mV 0-100 12.16 4-20 mV 0-100 13.16 0-20 mV 0-1000 14.16 4-20 mV 0-1000 15.16 0-20 mV 0-2000 .17 NEGATIVE TEMPERATURES Must be enabled to allow negative temperatures to be measured...
  • Page 39 TABLE 3-4 (Cont'd) FUNCTION .19 (Cont'd) SP2 OPERATING MODE Make the proper selection here in Function .19 before adjusting SP2 in Function .2. (Op#).(Fn#) Parameter/Comment 0.19 1.19 Deviation alarm-High (Above SP1) 2.19 Deviation alarm-Low (Below SP1) 3.19 Deviation band alarm (Out of Limits) 4.19 Full scale alarm-High (Non-tracking) 5.19...

  • Page 40: Examples Of Parameter Adjustments

    TABLE 3-4 (Cont'd) FUNCTION .22 °C/°F SELECTION Allows selection of °C or °F for display. Note that the correct bezel must be used. (Op#).(Fn#) Parameter/Comment 0.22 °C (not reset by Function .15) 1.22 °F (not reset by Function .15) .23 SOFTWARE VERSION NUMBER Read only-not changeable, factory set.
  • Page 41 TABLE 3-4 (Cont'd) STEP ACTION DISPLAY To display OPTION/FUNCTION Press P List: Ensure that jumper behind lower bezel is in ‘unlocked’ position. To change the FUNCTION Press 4 times number to 4: Press ★ Change to OPTION numbers: To change OPTION number 0 Press 4 times to OPTION number 4:...

  • Page 42: Negative Temperature Ranging

    3.7 NEGATIVE TEMPERATURE RANGING The following sensor types can be used for negative temperatures. The negative value shown against each type is automatically set by the choice of sensor (Function .16) and requires enabling with Function .17, Option 1. Type T: -90°C, -130°F Pt100: -100°C, -148°F...

  • Page 43: Second Output Operation

    3.11 SECOND OUTPUT OPERATION The following table shows operation of SP2 when Functions .30 and .31 are in the Default settings. TABLE 3-5 SP2 OPERATION Operating Mode (Function .19) Setting Typical Control Mode Compared SP2 Relay SP2 LED Examples of (Function .10) to SP1 is Energized...

  • Page 44: Details Of Advanced Functions .26

    3.12 DETAILS OF ADVANCED FUNCTIONS .26-.50 The following steps describe the sequence of keys one must press to change any of the Options related to Functions .26 through .50. Access is gained into these Advanced Functions via Function .13, as described below. STEP ACTION DISPLAY...
  • Page 45 TABLE 3-6 ADVANCED FUNCTIONS.26 -.50 NOTE These Advanced Functions, .26 through .50, are not required for day-to-day use. They should not be accessed except during set-up by qualified personnel. FUNCTION .26 HEATING OUTPUT LIMIT (OUTPUT 1) Allows adjustment of maximum output to heater in percent. Example: if 50% (Option 10) is selected, then the output of the controller would never be allowed to be greater than 50%.
  • Page 46 Inverting output may affect controller failsafe characteristics. Selection should only be made by qualified personnel. Consult OMEGA if you are not sure of your application. This function is not available with Software Version 3. Refer to Function .23. (Op#).(Fn#) Parameter/Comment 0.28...
  • Page 47 Inverting output may affect controller failsafe characteristics. Selection should only be made by qualified personnel. Consult OMEGA if you are not sure of your application. This function is not available with Software Version 3. Refer to Function .23. (Op#).(Fn#) Parameter/Comment 0.30...
  • Page 48 TABLE 3-6 (Cont'd) FUNCTION .33 TEMPERATURE DISPLAY SENSITIVITY Allows faster or slower (damped) response to output signal. (Op#).(Fn#) Parameter/Comment 0.33 Normal 1.33 High 2.33 .34 DERIVATIVE POLLING RATIO Allows adjustment of the frequency at which the controller checks the derivative function. This should not have to be adjusted from the Default value (0.5 x Derivative Time) for most processes.
  • Page 49 TABLE 3-6 (Cont'd) FUNCTION .36 (Cont'd) LIMIT (LATCHING) CONTROL (OUTPUT 2) Only for: SP2 ON/OFF mode Function .19/Options 1 through 5. PRESS simultaneously to reset (in non-alarm condition). .37 (Not used) FUNCTIONS .38 -.49 ARE PERFORMANCE DIAGNOSTICS .38 RESETS FUNCTIONS .39 TO.42 Display shows Function .38 (0.38) after getting to Function .13.

  • Page 50: Parameter Lock

    TABLE 3-6 (Cont'd) FUNCTION .46 READ QUARTER CYCLE TIME 1 Measured in seconds, minimum of 2 seconds, maximum of 1800 seconds (30 minutes). .47 READ QUARTER CYCLE TIME 2 Measured in seconds, minimum of 2 seconds, maximum of 1800 seconds (30 minutes). .48 READ QUARTER CYCLE TIME 3 Measured in seconds, minimum of 2 seconds, maximum of 1800 seconds (30 minutes).

  • Page 51: Section 4 Diagnostics

    SECTION 4 DIAGNOSTICS 4.1FAULT INDICATION Depending on the selection made at Functions .20 and .21, the SP1 and SP2 outputs are turned ON or OFF if sensor is open. The main temperature display, on a fault indication, is replaced by "EE" flashing, followed by a digit.

  • Page 52: Loop Break Alarm

    All functions will go to default state and must be reprogrammed. PRESS simultaneously to reset latched message. If you have any other problems, contact the OMEGA Customer Service Department at 1-800-622-2378 or (203) 359-1660. 4.2 LOOP BREAK ALARM The Loop Break Alarm (LBA) detects a control loop fault, and displays an error message (EE3).

  • Page 53: Operational Diagnostics

    Selecting LBA-EE3 message only: 1. Step to Function .12-LBA time Option 0-LBA OUT, displayed. 2. PRESS ★ to change to option. 3. PRESS to select Option 14, the recommended initial setting (2 x the control band in use). 4. In the LBA alarm condition, EE3 is displayed alternating with process temperature.

  • Page 54: Duty Cycle Monitor (Dcm) (Function .42)

    4.3.2 Duty Cycle Monitor (DCM) (Function .42): Monitors percentage of power used in the previous proportioning cycle. Average several readings for a more accurate result. Power requirements outside the range 20%-80% may be difficult to control and autotune. 1 To start monitoring: Select Function .38/Option 1 2 To return to normal operation: Press P...

  • Page 55: Section 5 Tuning

    SECTION 5 TUNING 5.1 AUTOTUNE Two types of autotune are provided to ensure optimum control of a wide spread of applications. Autotune AT: normal method, tunes during warm up (start up). Autotune PT (push-to-tune): for difficult applications, fine tunes at setpoint.

  • Page 56: Using Autotune At

    5.1.2 Using Autotune AT NOTE Read the following before using the Autotune feature. See Section 3.5 to change functions. 1. Functions .16-.24 should be selected first unless default values are used. 2. Adjust range if required (see Functions .16 and .24). 3.

  • Page 57: Function .0 Option 2

    STEP ACTION DISPLAY To change Option 0 to Press Option 1: Option (flashing) To start Autotune process: Press P "AT" display will alternate with process temperature display. NOTE The Autotune algorithm can be tried on any process. However, it is designed to work best for heating processes when the setpoint is at least 100°F (50°C) above ambient.

  • Page 58: To Abort Autotune

    5.1.4 To Abort Autotune To abort Autotune, simply do the following: STEP ACTION DISPLAY To get to Function Mode: Press P Function (flashing) Press ★ To get to Option Mode: Option (flashing) To change Option 1 to Press Option 0: Option (flashing) To get back to process Press P...

  • Page 59: Autotune Value Display

    In high resolution mode (tenth degree, 0.1°): Should error message EE6 occur during tuning, select normal resolution (Function .18/Option 0), then Autotune and reselect Hi- resolution mode. 5.1.7 Autotune Value Display At the end of an Autotune cycle, the AT value is automatically entered and may be displayed in Functions: Function .5 Prop band/Gain...

  • Page 60: Proportional Cycle Time

    5.1.8 Proportional Cycle Time Autotune Cycle Time: Autotune calculates the optimum value but for safety reasons does not automatically implement it. To see the calculated cycle time: 1 . Program for Function .4 Option 0, similar to the example in Section 5.1.7.
  • Page 61 STEP ACTION DISPLAY Change Function .0 to Press 4 times Function .4: Option (20 seconds) Press ★ To change to Option Mode: Option (flashing) Change Option 0 to AT Option: Press Calculated AT Value Indicates Flashing that the display shows AT value Press P If AT value is suitable, press P.
  • Page 62 STEP ACTION DISPLAY Go through steps 2 through 5 once again. This time is on. 9.8 sec is accepted from before. Press ★ To change to Option Mode: Flashing Press To display latest calculated AT value: (Flashing) For example, 7.2 seconds shows that the display shows latest...

  • Page 63: Manual Tuning

    5.2 MANUAL TUNING 5.2.1 The Simplified Method If the pre-set PID Default values prove to be unsuitable for a particular application, the following method can be used to establish new settings which should be acceptable and which can be adjusted to give optimum control. Other methods may also be used- tuning is a trial and error process.

  • Page 64: Alternative Tuning Method

    4. Using the figures obtained for the oscillation period (T) seconds and amplitude (A) degrees (refer to Figure 5-3), the following parameter values can be calculated: a. Proportional Time= If 10 seconds or less use the pulse output model. b. Proportional Band % = A x 1.5 x 100 Set to next full scale...
  • Page 65 STEP ACTION DISPLAY Press Change to Function .4: four times Flashing Press ★ Change to Option Mode: Flashing Change to Option 7: Press seven times Flashing Return to Operating Mode Press P CONTROL MAY NOW BE WORSE-TEMPERATURE WILL SWING ABOVE AND BELOW SETPOINT. Observe this swing carefully and record the difference between the highest and the lowest reading (A =________) and time in seconds between consecutive highest readings (T=________)
  • Page 66 STEP Fixed Values 0.5% 2% 2.5% 3% 5% 10% 20% Option No. *For other fixed values, refer to Table 3-4. Using value for T (time interval between consecutive highest readings) calculate new value for "Proportioning Time" (Function .4). = seconds Use calculated value to select option number in Function .4 table below.

  • Page 67: Proportioning Time

    STEP Using the same value of T, select option number in Function .8 "Integral Time" table below. SECONDS Fixed Values 180 300 1080 Option No. *For other fixed values, refer to Table 3-4. Now enter in new option numbers for Functions 4, 5, 6. and 8. P key is used to enter and exit from setting mode.

  • Page 68: Proportional Band

    5.4 PROPORTIONAL BAND In time proportioning control, the proportional band is employed to smooth out the oscillating characteristic typical of ON/OFF control. A feature of proportional control is that the system may run at a slightly different temperature to the set point (Offset), and have a slower reaction to disturbances.

  • Page 69: Derivative (Rate) Time

    5.6 DERIVATIVE (RATE) TIME Derivative enables the controller to shift the proportional band up or down in an amount proportional to the rate of temperature change to help the system compensate for rapidly changing temperature. The derivative term is added to Proportional Control action to speed up response to disturbances and to suppress overshoot.

  • Page 70: Heating And Cooling

    Where a given application cannot be tuned to give acceptable results over the required range of process temperatures and conditions, it is possible that better results may be obtained with Proportional, Derivative and Approach Control terms only. 5.8 HEATING AND COOLING 5.8.1 General Considerations Ideal settings for these systems are very dependent on the application;...

  • Page 71: Setting Up Routine For Heat-Cool Control

    Temperature (offset without Cool cool strategy prop band integral action) e.g. 50% cool setpoint e.g. 30% heat no offset Integral exothermic change in causes prop consistent load causes bands to deadband/ integral to move overlap move prop bands down Time Figure 5-9.
  • Page 72 STEP ACTION PARAMETER When temperature stable at setpoint: * Select cool strategy Function .19/ * Select cool prop band option value Option 7 from table nearest to Heat prop band Function .11 value (view Function .5) * Select cool cycle time option value nearest to Heat cycle time value (view Function .10 Function .4) * Adjust SP2 overlap/deadband to 0°...

  • Page 73: Section 6 Calibration

    SECTION 6 CALIBRATION 6.1 DISPLAY OFFSET The CN9000A is not designed to allow field calibration. A one point "Display Offset" can be programmed from the front of the unit using Function .9 sensor Error Correction (Display Bias). This function should not be used in normal operation. Display Bias can be used to correct for small errors in calibration of a particular thermocouple or the CN9000A.

  • Page 74: Sensor Span Adjust (Function

    NOTE Error polarity applies to CN9000A correction EXAMPLE READS CN9000A 404° Ext. Meter 400° Error Set (-4) correction at Function .9. 6.2.2 Sensor Span Adjust (Function .35) Steps for providing correction where two temperatures require differing amounts of adjustment. Ideal (i.e. readings match) Negative...
  • Page 75 E2-E1 Formula: Function .35 = x span (as Function .24) T2-T1 (-5°)-(+2°) Example: Function .35 = x 250° (Function .24 span) 200°-60° Function .35 x 250 = -12° Set (-12°) in Function .35° 5. A span error entered in Function .35 immediately changes the reading.
  • Page 76 NOTES...

  • Page 77: Section 7 115/230 Vac And 2-Wire/ 3-Wire Rtd Conversions

    SECTION 7 INTERNAL JUMPER CHANGES FOR 115/230 VAC AND 2-WIRE/3-WIRE RTD CONVERSIONS Input power conversion requires changes on the Main PC Board (PCB). RTD 2-wire to 3-wire conversions also requires jumper changes on the Main PCB. THESE MODIFICATIONS SHOULD BE MADE ONLY BY A QUALIFIED TECHNICIAN.

  • Page 78: 115/230Vac Voltage Conversion

    3. Gently slide the output module from the housing. Next remove the Main PCB from the controller. This can be done by carefully taping module cover on table top (as shown below) to release the PC board. Do not use pliers on protruding board cladding.

  • Page 79: 2-Wire/3-Wire Rtd Conversion

    To install a module with a 1A Triac SSR, 4-20mA DC or 0-10VDC output will require a controller that has a 5VDC SSD (DC Pulse) on the first output-; namely the OMEGA model CN9121A, CN9122A, CN9221A or CN9222A controllers. The BD9031A, BD9041A, or BD9051A socket can then be plugged on the back of the unit in place of the standard socket used for wiring.
  • Page 80 Hardware required to make units is as follows: CN9121A + BD9031A makes a CN9131A CN9121A + BD9041A makes a CN9141A CN9121A + BD9051A makes a CN9151A CN9221A + BD9031A makes a CN9231A CN9221A + BD9041A makes a CN9241A CN9221A + BD9051A makes a CN9251A NOTE 230VAC units use different modules for BD9041A or BD9051A...

  • Page 81: Section 8 Specifications

    SECTION 8 SPECIFICATIONS Dual 115/230V ±15% 50/60 Hz 5 VA, POWER; Factory set, jumper changeable OUTPUT MODULES SPDT relay, rated 5A resistive at RELAY ON OUTPUT 1: 250V continuous use † SPDT relay, rated 3A resistive at RELAY ON OUTPUT 2: 250V continuous use †...
  • Page 82 TABLE 8-1 TEMPERATURE DISPLAY-LINEARITY AND DEFAULT SETTINGS SENSOR LINEARIZED LINEARITY DEFAULT TYPE RANGE* TOLERANCE ± SETPOINT ADJ* 0 to 800°C 1°C 400°C 0 to 1200°C 1°C 400°C 0 to 1200°C 1°C 400°C 0 to 300°C 5°C 1600°C 300 to 1600°C 2°C 0 to 300°C 5°C...
  • Page 83 3 samples per second. Re-zero of CJC SAMPLING TIME: and auto calibrate every 5 seconds TEMPERATURE <150ppm/°C of max. linearized range COEFFICIENT: (typical) REFERENCE 22°C ±2°C, 115/230 V ±15% after 30 CONDITIONS: minutes settling time SENSORS Thermocouple: J, K, E, R, S, N, B, J DIN: INPUT TYPES: RTDs: 2-wire Pt-100, 3-wire Pt100 0 to 20 mV, 4 to 20 mV, user selectable...
  • Page 84 GENERAL 13.4 oz (380 g) WEIGHT: AMBIENT 5° to 49°C (40° to 120°F) TEMPERATURE: Excellent. Normal control restored within NOISE IMMUNITY: a short time after major power disturbance and "brown outs". 10 years with instrument unpowered DATA RETENTION: SAFETY Designed in accordance with: UL 873 STANDARDS: Industrial Temperature Controllers, CSA C22.2/24-1981, VDE 0411 Class 1;...
  • Page 85 DIMENSIONS See Figure 8-1 below. WITH POWER SOCKET: Figure 8-1. Dimensions with the Power Socket...

  • Page 86: Appendix A: Function Quick Reference

    APPENDIX A FUNCTION QUICK REFERENCE GUIDE STANDARD FUNCTIONS (.0 -.25) OPERATOR ADJUSTMENTS Operating Modes (Autotune/Auto-manual) Manual Reset Setpoint 2 Adjust Setpoint 1 Lock TUNING Cycle Time/On-off (Output 1) Proportional Band/Deadband (Output 1) Derivative Time/Rate (Output 1) Derivative Approach Control (Output 1) Integral Time (Output 1 ) Sensor Offset (Calibration) .10 Cycle Time/On-off (Output 2)
  • Page 87 APPENDIX A (Cont’d) FUNCTION QUICK REFERENCE GUIDE ADVANCED FUNCTIONS (.26 -.50) INITIAL CONFIGURATION .26 Heating Output Limit (Output 1) .27 Cooling Output Limit (Output 2) .28 Output 1 Direct/Reverse (Heat/Cool) .29 Output 1 LED Operation .30 Output 2 Direct/Reverse .31 Output 2 LED Operation .32 Error Indication Resolution .33 Temperature Display Sensitivity .34 Derivative Polling Ratio...

  • Page 88: Appendix B: Quick Start Up Instructions

    APPENDIX B QUICK STARTUP Sample case - Type K thermocouple input, autotuned to 147°C: STEP ACTION DISPLAY Mount controller in panel. Attach T/C & power leads in accordance with the diagram on back of controller. Note use 115 VAC or 240 VAC depending on which power level is required for the controller you ordered.
  • Page 89 APPENDIX B (cont’d) QUICK STARTUP STEP ACTION DISPLAY Press ★, hold Change setpoint temperature. Hold ★ button while pressing Press "up arrow" ( ) to increase setpoint, or alternately "down arrow" ( ) to decrease (Note that the digits will change while arrows are held, slowly at first, then more quickly).
  • Page 90 NOTES...
  • Page 91 OMEGA warrants this unit to be free of defects in materials and workmanship and to give satisfactory service for a period of 37 months from date of purchase. OMEGA Warranty adds an additional one (1) month grace period to the normal three (3) year product warranty to cover handling and shipping time. This ensures that our customers receive maximum coverage on each product.
  • Page 92 Where Do I Find Everything I Need for Process Measurement and Control? OMEGA...Of Course! TEMPERATURE ✓ Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies ✓ Wire: Thermocouple, RTD & Thermistor ✓ Calibrators & Ice Point References ✓ Recorders, Controllers & Process Monitors ✓...

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