Table of Contents
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TABLE OF CONTENTS
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Model Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Outer Dimensions and Panel Cutout Size . . . . . . . . . . . . . . . . . . . . . . . 15
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Wiring Instructions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Front Panel Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Front Panel Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Autotuning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Programming
1. Set Up Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
2. System Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Appendix A: Autotuning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Appendix B: Manual Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Appendix C: Heater Burnout Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Appendix D: Heat/Cool Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
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Table of Contents
Related Manuals for Omega CN4420 Series
Summary of Contents for Omega CN4420 Series
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Page 1: Table Of Contents
TABLE OF CONTENTS Introduction..........2 Features. -
Page 2: Introduction
INTRODUCTION ® The OMEGA CN4420, CN4520, CN4620, and CN4720 Series controllers are economical process controllers that accept temperature or process inputs, and have sophisticated control capabilities, providing on/off control, PID, or autotune PID, with Fuzzy Logic. The controllers have common features, but differ in panel-size requirements. They are avail- able with mechanical relay, 24 VDC SSR driver, or 4-20 mA output. -
Page 3: Features
FEATURES • Selectable °F/°C • Fuzzy Logic Control • PID Autotune with manual over- • Offset adjustments ride - heating or cooling • Programmable decimal point • Programmable control action - • Programmable lock feature reverse or direct • Advanced security options to •... -
Page 4: Safety Precautions
SAFETY PRECAUTIONS Before using this product, the user is requested to read the following precautions carefully to ensure safety. The safety requirements are classified as either “warning” or “caution” according to the following explanations: suggesting that the user's mishandling can Warning result in personal death or serious injury. - Page 5 Caution Installation 1. Avoid installing the unit in places where: • the ambient temperature may reach beyond the range of -10 to 50°C (14 to 122°F) while in operation • the humidity may reach higher than 90% RH while in operation •...
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Page 6: Unpacking
• 250Ω precision resistor (when required) (1) • Current transformer (when required) (1) ® If you have any questions about the shipment please call the OMEGA Customer Service Department. When you receive the shipment, inspect the container and equipment for signs of damage. -
Page 7: Model Configuration
MODEL CONFIGURATION MODEL DESCRIPTION Single Output Models _________________________________________________________________ CN4421(*)-(**) 1/16 DIN controller CN4521(*)-(**) 1/8 DIN controller CN4621(*)-(**) 1/4 DIN controller CN4721(*)-(**) 72 mm sq. controller _________________________________________________________________ Dual Output Models _________________________________________________________________ CN4522(*)-(**)-(***) 1/8 DIN controller CN4622(*)-(**)-(***) 1/4 DIN controller CN4722(*)-(**)-(***) 72 mm sq. controller _________________________________________________________________ Specify TR for Thermocouple/RTD input or CV for current/voltage input ** Specify first output code from Output Options table below... -
Page 8: Specifications
SPECIFICATIONS INPUT RANGE TABLE: _________________________________________________________ Input Signal Input Range Input Range Remarks (°C) (°F) _________________________________________________________ Thermocouple* 0 ~ 800 32 ~ 1472 Cold Junction 0 ~ 1200 32 ~ 2192 compensating 0 ~ 1600 32 ~ 2912 function built-in 0 ~ 1800 32 ~ 3272 0 ~ 1600 32 ~ 2912... - Page 9 CONTROL FUNCTION (SINGLE OUTPUT) _________________________________________________________ Control action PID control with auto-tuning Fuzzy control with auto-tuning _________________________________________________________ Proportional band (P) 0-999.9% of full scale (FS), setting in 0.1% steps _________________________________________________________ Integral time (I) 0-3200 sec, setting in 1 sec steps _________________________________________________________ Differential time (D) 0-999.9 sec, setting in 0.1 sec steps _________________________________________________________...
- Page 10 _________________________________________________________ P,I,D= 0: On/Off action (without dead band) for heating and cooling I,D= 0: Proportional action _________________________________________________________ Proportional cycle 1-150 sec, for relay contact output and DC SSR driver output only _________________________________________________________ Hysteresis width On/Off action for heating and cooling: 0.5% FS On/Off action for cooling: 0.5% FS _________________________________________________________ Anti-reset wind-up...
- Page 11 OUTPUT (Dual Output) CN4522, CN4622, CN4722 only _________________________________________________________ Control output For dual output type, one of the following three types is selected on both heating and cooling types: (Not available on CN4420) (1) Relay contact (SPDT): 220V AC/30V DC, 3A (resistive load) (2) DC SSR driver (voltage pulse): 15-30V DC at ON/0.5V DC or less at OFF.
- Page 12 _______________________________________________________ Status display Control output, alarm output, heater burnout alarm output (on CN4520, 4620 and 4720 only). _______________________________________________________ Indication accuracy Thermocouple: ±0.5% FS ±1 digit ±1°C (at 23°C) R thermocouple: 0-400°C; ±1% FS ±1 digit ±1°C B thermocouple: 0-500°C; ±5% FS ±1 digit ±1°C RTD, voltage, current: ±0.5% FS ±1 digit _______________________________________________________ GENERAL SPECIFICATIONS...
- Page 13 _______________________________________________________ Process variable offset ±10% FS _______________________________________________________ Setpoint variable offset ±50% FS _______________________________________________________ Input filter 0-900.0 sec, setting in 0.1 sec steps (primary lagging filter) _______________________________________________________ Noise rejection ratio Normal mode noise (50/60Hz): 50dB or more Common mode noise (50/60Hz): 140dB or more _______________________________________________________ POWER FAILURE PROTECTION _______________________________________________________...
- Page 14 STRUCTURE _______________________________________________________ Mounting method Panel mounting or surface mounting Surface mounting: CN4420 only _______________________________________________________ External terminal CN4420: 8-pin or 11-pin socket Other types: screw terminal (M3.5 screw) _______________________________________________________ Enclosure Black ABS plastic _______________________________________________________ Dimensions CN4420 48 x 48 x 85.7mm (1/16 DIN) 1.89 x 1.89 x 3.37 in.
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Page 15: Outer Dimensions And Panel Cutout Size
OUTER DIMENSIONS AND PANEL CUTOUT SIZE CN4420 (0.28) 85.7 (3.37) 71.5 (2.81) 48 (1.89) PV/SV DATA Gasket 48 (1.89) Panel (0.37) Unit: mm (in.) Panel thickness: 1 to 8 mm (0.04 to 0.31) Mounting bracket Panel cutout size: when installing “n”... - Page 16 CN4520, CN4720, CN4620 95.8 16.2 DATA Gasket Panel 18.7 Unit: mm (in.) Panel thickness: 1 to 8 mm (0.04 to 0.31) Units Model CN4520 90.5 114.5 120Min. 92Min. 52.5 100.5 0.02 0.03 2.07 3.96 3.56 4.51 1.77 3.62 4.72Min. 3.62Min. CN4720 76.5 76.5...
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Page 17: Installation
INSTALLATION NEMA 4X Integrity The front side of this instrument conforms to NEMA 4X. To ensure the waterproofness between the instrument and the panel, use the gasket that is provided with the unit according to the installation procedure described below. How to install the unit For CN4520, CN4620, CN4720 Series install the two metal brackets, one on the top and the other on the bottom, and tighten the screws to a... -
Page 18: Wiring Instructions
WIRING INSTRUCTIONS Warning Be sure to use the rated power supply voltage and polarity. (viewing from the back CN4421 (without alarm) of instrument) Current output, DC SSR driver output – Contact output *Voltage/current – – – Power supply Thermocouple input (viewing from the CN4421-A (with alarm) back of instrument) - Page 19 CN4520, CN4620 Series *Voltage/ Current output, DC SSR Current T.C. driver output input Control output 2 – (on the cooling side) – Current output, Alarm 1 (upper limit alarm) DC SSR driver Alarm 2 (lower limit alarm) output Heater burnout alarm Control output 1 Common –...
- Page 20 Wiring Power to the Controller • Be sure to use the rated power supply voltage and polarity for the unit to protect it against damage and failure. • Keep the power off until all of the wiring is completed to prevent electric shock and abnormal operation.
- Page 21 • If using extension wires, make sure they are of the same thermo- couple material and grade; any dissimilar metal junctions will lead to erroneous readings. • Ungrounded thermocouples are recommended for optimal perfor- mance and to prevent ground loops. •...
- Page 22 If using two outputs in a heat/cool type control, please refer to Appen- dix D for more details. Relay • Connecting a load to full capacity of the relay will shorten the relay life, especially if it is operated at a rapid rate. To protect the output relay, an external relay or a contactor should be used.
- Page 23 4 to 20mA DC • The output is a non-isolated analog signal used to drive a variety of output devices such as SCRs and valve actuators. • The load resistance must be less than 600Ω. • Make sure the polarity is correct. •...
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Page 24: Front Panel Description
FRONT PANEL DESCRIPTION C1 C2 H L HB DATA PV/SV DATA DATA Model : CN4421 Model : CN4520 Model : CN4620, CN4720 Name Function 1 Process Value (PV) display Displays the process value (PV). 2 Set value (SV) indication lamp Stays on while a set value is on the display. 3 Set value (SV) and Set value (SV) or parameter symbols and codes parameter display... - Page 25 8 Data entry key The key to be used for storing the data after pre- vious data is changed. (none of changed data can be registered unless this key is pressed.) 9 UP key for units place By pressing once, the number in the units place blinks.
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Page 26: Front Panel Operation
FRONT PANEL OPERATION The programming menu consists of two blocks—SETUP MENU AND SYSTEM MENU. At power up, the controller will be in the operational mode– process variable (PV), in the case of CN4420, and both process variable and setpoint variable (SV), in the case of CN4520, CN4620, CN4720 will be displayed. - Page 27 SETUP MENU Operation Display 1. Operational mode – PV, SV 2. Press SEL key for about 3 secs – “ProG” changes to “P-n1” 3. Press DATA key – “P-n1” data 4. Press the appropriate UP key – Corresponding digit blinks once 5.
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Page 28: Autotuning
AUTOTUNING Before initiating the autotune function, first decide if you would like to autotune at setpoint, or 10% of full scale below setpoint. Set the set- point (SV), alarms (AL, AH) and the cycle time (TC). Bring your process near setpoint before starting the autotune procedure. Autotuning works best when the setpoint is 100°F (60°C) above ambient temperature. -
Page 29: Setup Menu
SETUP MENU See Quick Reference (p.74) for a listing of the setup menu. PARAMETER DESCRIPTION P-n1 Control Action & Sensor Burn-out Protection: The Con- trol Action is the direction of the output relative to the process variable. The controller can be programmed as either a reverse or a direct-acting controller. - Page 30 Table of Output Type Codes Control action Burn-out direction Code Output type Output 1 Output 2 Output 1 Output 2 Downscale Reverse action Upscale Single Downscale Direct action Upscale Downscale Downscale Upscale Reverse action Downscale Upscale Upscale Direct action Downscale Downscale Upscale Direct...
- Page 31 P-n2 Input type: The Input Type is the type of sensor to be used with the controller in sensing the process variable. The Input Type must be correctly programmed into the con- troller in order for the controller to perform with the selected sensor type.
- Page 32 Table of Input Type Codes Range of Range of Code Input Signal measurement measurement (° C) (° F) RTD (α=.00385) Pt100Ω -150 to 850 -238 to 1562 Thermocouple 0 to 800 32 to 1472 0 to 1200 32 to 2192 0 to 1600 32 to 2912 0 to 1800...
- Page 33 P-SL Lower Limit of Input Range: P-SU Upper Limit of Input Range: The Lower Limit and the Upper Limit of Input Range establish the desired low and high limit for the type of input used. The Lower limit must be greater than or equal to the input type’s lower limit, while the Upper Limit must be less than or equal to the input type’s upper limit.
- Page 34 SCALING THERMOCOUPLE AND RTD(Pt100) INPUT RANGES Example: Program a J thermocouple for 50 to 500 ° F Input Type Minimum/Maximum Range 32 ... . .1472 °F J Thermocouple Program to 50 to 500 Full Range = (500-50) = 450 F 27.5 50...
- Page 35 P-AL Alarm Type 2: P-AH Alarm Type 1: This function sets the control action for the optional alarm output relays. The CN4520, CN4620, CN4720 comes with two relays while the CN4420 comes with one. They can be programmed for absolute, deviation, combination, or zone alarm config- uration.
- Page 36 Table of Alarm Action Type Codes ALM1 ALM2 Alarm type Action diagram No alarm Absolute High alarm value alarm Low alarm High alarm (with hold) Low alarm (with hold) Deviation High alarm alarm Low alarm High/Low alarm High alarm (with hold) Low alarm (with hold) High/Low alarm...
- Page 37 P-An Alarm Hysteresis: The Alarm Hysteresis is that area on one side of the alarm setpoint where the output does not change condition. That area or deadband is intended to eliminate relay chatter at alarm setpoint with less wear on the relay. With a wide Alarm Hysteresis, the controller takes a longer time to change output condition.
- Page 38 The input range can be anywhere between -1999 and 9999 units and must be programmed in the lower limit of input range and the upper limit of input range parame- ters with decimal place values. Enter a Decimal Point Position code depending on the desired resolution, the input type, and the programmed input range.
- Page 39 C/F Selection: The C/F Selection allows choosing either the Celsius or Fahrenheit scale. If using the controller to control a process other than temperature using the cur- rent/voltage input model, the C/F Selection is not impor- tant because the scaling is done using the lower limit of the input range and upper limit of input range parame- ters, and the indication is in engineering units.
- Page 40 ADJ0 Zero/span Calibration: This function is used for ADJS zero/span calibration of the input. Calibration is effected by first applying the appropriate signal for zero and span points of the input range being used and then by cor- recting the errors. This is an independent function and the instrument can easily be reset to conditions prior to delivery.
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Page 41: System Menu
SYSTEM MENU PARAMETER DESCRIPTION Main Setpoint Variable: The main setpoint variable is the control point you wish to maintain. The main setpoint variable is set within the input range, between P-SL and the P-SU settings. ProG Ramp/Soak Command: The Ramp/Soak program auto- matically changes the setpoint value with time according to a preset pattern. - Page 42 Derivative Time (Rate): The Derivative Time is that time used in calculating rate of change and thermal lag in helping to eliminate overshoot that results in response to process upsets. This overshoot usually accompanies proportional only and proportional-integral processes. The derivative action dampens proportional and integral action as it anticipates where the process should be.
- Page 43 Low Alarm Setpoint: The Low Alarm Setpoint is that point of the process below which, the low alarm output relay is energized. If the alarm type, P-AL, includes an absolute value for the Low Alarm Setpoint, enter the actual value you want the alarm to be activated at regardless of what the main setpoint is set for.
- Page 44 Cycle Time (Output #1): The Cycle Time for output #1 is that time where the output is on for a percentage of that time and off for a percentage of that time, creating a pro- portioning effect. The Cycle Time is only used when the controller is used as a P, PI, PD, or PID and when the output is time proportional as with the relay or DC SSR driver outputs.
- Page 45 Hysteresis: The Hysteresis is that area around the main setpoint where the output does not change condition. That area or deadband is intended to eliminate relay chatter at setpoint for On/Off control applications. The wider the Hysteresis, the longer it takes for the controller to change output condition.
- Page 46 Heater Burnout Alarm: If the heater’s operating current falls below this setpoint, the heater break alarm output relay is energized. This option is used in cases where the PXW is controlling a bank of heaters wired in paral- lel. A current transformer around the hot lead going to the heater bank and connected to the controller is tied with the controller’s output and senses the current used by the heater bank.
- Page 47 Autotuning: Autotuning is the automatic calculation and entering of the control parameters (P, I and D) into memo- ry. Autotuning will also automatically set anti-reset wind- up (Ar). There are two types of Autotuning that can be performed by the controller, Autotuning at main setpoint or Autotuning at 10% of full scale below main setpoint.
- Page 48 TC-2 Cycle Time (Output #2) The Cycle Time for output #2 is similar in function to cycle time, TC, for output #1. Output #2 is the cooling side of a heat/cool controller. A shorter cycle time provides higher proportioning resolu- tion and better control but causes increased strain on the output device.
- Page 49 Proportional Band Prop. Band for Heating X Input Range = Prop. Band for Cooling X Input Range = Deadband/Overlap X Input Range 200% Deadband/Overlap # of units in the Prop. Band for Heating X Input Range = Proportional Band for Heating 100% # of units in the Prop.
- Page 50 Deadband/Overlap: The Deadband/Overlap is that per- centage of the heating side of the proportional band where the heating (output #1) and the cooling (output #2) outputs are separated by a Deadband or where they Overlap on a heat/cool controller. A value greater than zero establishes a Deadband or area where neither the heating nor cooling outputs are energized for more pow- erful heating and cooling loads.
- Page 51 Parameter Lock: This function enables or disables changing the settings of parameters. Code: 0 - All parameter settings are changeable 1 - All parameter settings are locked; cannot be changed 2 - Only the main setpoint can be changed; all other parameter settings are locked and cannot be changed.
- Page 52 Set Value Third ramp Second ramp Third Fourth Second soak Ramp soak First First Fourth Soak ramp soak Time TM1R TM1S TM2R TM2S TM3R TM3S TM4R TM4S Ramp: Region in which the setpoint changes toward the target value. Soak: Region in which the setpoint stays unchanged at the target value. Note 1: SV cannot be changed while the operation is running or suspended.
- Page 53 Table of Ramp/Soak Modes MOD Power on start Output on END Output on OFF Repeat function Continue controlling Continue controlling Continue controlling Continue controlling Yes Continue controlling Stand-by mode Continue controlling Stand-by mode Stand-by mode Continue controlling Stand-by mode Continue controlling Yes Stand-by mode Stand-by mode Stand-by mode...
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Page 54: Error Messages
ERROR MESSAGES Error Indication Cause Control Output 1. Thermocouple burnt out. When the burn-out 2. RTD (A) leg burnt out. control output is set for 3. PV value exceeds P-SU downscale (standard): by 5% FS. OFF, or 4mA or less. 1. -
Page 55: Appendix A: Autotuning
APPENDIX A Autotuning By autotuning, the controller selects what it calculates to be the optimal PID control parameters for a particular process and then stores them in EEPROM memory for future use. The PID parameters are stored so that when the controller is powered up after being shut down, the controller does not need to be autotuned again. - Page 56 ized as very dynamic. Because of how the Autotune function is per- formed, a very dynamic system would create very large overshoots which could damage the process. 3. The system is very insulated and cannot cool down in a timely man- ner.
- Page 57 The controller then reads the reaction of these test signals on the process. Keep in mind that every process is different and therefore every reaction to the test signals is different. This is why PID parame- ters are not the same for different processes. The amplitude (L) or lag time which is the overshoot and undershoot of the system when auto- tuning and the time constant (T) which is the time the process takes to go through one On/Off cycle is measured.
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Page 58: Appendix B: Manual Tuning
APPENDIX B Manual Tuning Tune the controller if any of the following occurs: • Installation in a new system • Installation replacement in an existing system • The input sensor is relocated or changed • The output device is relocated or changed •... - Page 59 An example of proportioning would be a vehicle approaching a stop sign at an intersection. If the driver were traveling at 50mph and only applied his brakes once at the intersection, his car would skid through the inter- section before coming to a full stop. This illustrates how On/Off control acts.
- Page 60 reactive the output becomes. A proportional band too small, however, can lead to over-responsiveness leading to process oscillation. A proportional band which is correct in width approaches main setpoint as fast as possible while minimizing overshoot. If a faster approach to setpoint is desired and process overshoot is not a problem, a smaller or narrower proportional band may be used.
- Page 61 Integral Time With the proportional band alone, the process tends to reach equilibri- um at some point away from the main setpoint. This offset is due to the difference between the output needed to maintain setpoint and the out- put of the proportional band at setpoint. In the case of the controller where the proportional band is equidistant from the main setpoint, the output is around 50%.
- Page 62 Integral Time is the speed at which the controller corrects for offset. A short integral time means the controller corrects for offset quickly. If the integral time is too short, the controller would react before the effects of previous output shifts– due to lead time or lagtime, could be sensed, causing oscillation.
- Page 63 The derivative action changes the rate of reset or integration propor- tional to the rate of change and lag time of the system. By calculating the rate of change of the process and multiplying it by the lag time which is the time it takes the controller to sense an output change, the controller can anticipate where the process should be and change the output accordingly.
- Page 64 Tuning Tuning the controller, as with any PID loop, requires tuning each para- meter separately and in sequence. To achieve good PID control manu- ally, you can use the trial and error method explained below. Tune the Proportional Band Set Integral Time = 0 (off) Set Derivative Time = 0 (off) Start with a large Proportional Band value which gives very sluggish control with noticeable offset and tighten by decreasing the value in...
- Page 65 Add Derivative Time Do not add Derivative Time if the system is too dynamic. Start with a small Derivative Time value which gives sluggish response to process upsets and double the value. Analyze the process variable. If the response to process upsets is still sluggish, double the value again. Continue with the same procedure until the process starts to oscillate at a quick constant rate.
- Page 66 Time Constant Time 4. Widen the Proportional Band until only slightly unstable. This is the Proportional Band’s Ultimate Sensitivity. The Proportional Band’s Ultimate Sensitivity width will be defined as “P” when calculating the actual Proportional Band. 5. Use the following coefficients in determining the correct PID settings for your particular application.
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Page 67: Appendix C: Heater Burnout Option
APPENDIX C Heater Burnout Option The Heater Burnout option is used to detect heater burnout conditions and to energize an alarm relay when such conditions exist. In most cases, the option is used to detect the failure of one or more zones in a multi-zoned heater where all individual resistive heater zones are wired in parallel. - Page 68 Notes: 1. The Heater burnout option is available on the CN4520, CN4620, CN4720 controllers only. 2. The Heater burnout option cannot be used on the controller with a 4-20mA DC output. The current sensing transformer would pick up current changes due to fluctuating power output, between 0% and 100%, which would result in a heater burnout alarm condition even though no such condition existed.
- Page 69 3. Set Heater Burnout alarm setpoint parameter “Hb”. With the current sensing transformer connected and the heater in operation, output energized, change the Heater Burnout Alarm set- ting from the maximum current setting for the particular current sensing transformer being used to a lower value. Allow 3 secs. or more between setting changes.
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Page 70: Appendix D: Heat/Cool Option
APPENDIX D Heat/Cool Option With the Heat/Cool Option, the controller can control a temperature application with one input at one main setpoint using two outputs, a heating output and a cooling output. By using a heating and cooling output, a process is able to quickly bring the temperature to setpoint in both directions and to limit the amount of overshoot. - Page 71 Deadband/Overlap: Deadband is that area where neither out- puts are energized. Overlap is that area when both outputs are energized. This function lets you decide where you want the heating action to stop and the cooling action to begin. Notes: 1.
- Page 72 6. Autotune is not effective on the cooling side of Heat/Cool control. Autotune the controller for heat only and then manually tune the cooling parameters. Wiring and Setting 1. Make sure the correct output type is installed for Output #2. Verify that parameters TC2, COOL, and db are indicated in the System menu.
- Page 73 Heating Side Cooling SIde Heating Proportional Band Cooling Proportional Band [P/2] [P/2 COOL] I (same as for heating) D (same as for heating) 6. With the heat side tuned, manually set the COOL parameter or Proportional Band Coefficient for Cooling. If the cooling output is less powerful than the heating output, the Cooling Proportional Band must be narrower than the Heating Proportional Band;...
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Page 74: Quick Reference
QUICK REFERENCE Note that the Setup Menu is listed before the System Menu here, although the System Menu is displayed first on the controller. It is advised that the Setup Menu is programmed first. Please refer to P. 26 for programming instructions. Setup Menu Parameter Range... - Page 75 Parameter Range Description Default settings settings ADJ0 Zero calibration dSP7-8 ADJS Span calibration dSP7-16 -3.0 dSP7-32 dSP1-7 0-255 Parameter mask † System Menu ProG oFF/rUn/HLd Ramp/Soak command dSP1-1 0.0 - 999.9%FS Proportional band dSP1-2 0 - 3200sec Integral time dSP1-4 0.0 - 999.9sec Derivative time dSP1-8...
- Page 76 Parameter Range Description Default settings settings PLC1 -3.0 dSP2-32 PHC1 103.0 dSP2-64 PCUT dSP2-128 0 - 100% Balance 0.0/50.0 dSP3-1 0 - 100%FS Anti-reset windup 100%FS dSP3-2 0 - 2 Parameter lock dSP3-4 STAT Ramp/soak status dSP3-8 SV-1 0 - 100%FS 1st setpoint 0%FS dSP3-16 TM1r...