background image

14

or C (Cooling) 

Set output %: in parameter 

Operation Mode

, PV screen displays “oUt‘x’”, ‘x’ is 1 (output 1) or 2 (output 2)

FUZZY Mode: 

This comprises 2 parts: PID parameters and Fuzzy exclusive parameters. Since Fuzzy control is calculated based

on P.I.D values of PID control, the user must first set P.I.D parameters or perform auto tuning (AT) to produce these parameters. In
addition, Fuzzy control includes the following 2 exclusive parameters.
a

  Fuzzy Gain Setting: altering this value will directly affect the calculation of Fuzzy gain. Increasing this value will directly

enhance the Fuzzy control; decreasing this value will weaken the Fuzzy control. It is recommended that this value shall be 
decreased for systems with slow reaction to heating/cooling. This value may be increased for systems with quick reaction to 
heating/ cooling.   

b

  Set Fuzzy DeadBand: The effective bandwidth of Fuzzy control, when PV value enters into the range of SV-FZDB 

<PV<SV+FZDB, Fuzzy control will stop calculation. I.e., when the PV is within this temperature range, its Fuzzy control is 
fixed. 

Set parameter

  to 

  in 

Initial Setting Mode

   

Set Fuzzy Gain: Set value of Fuzzy Gain by parameter

  in 

Regulation Mode

Set Fuzzy DeadBand: Set value of Fuzzy DeadBand by

  parameter in 

Regulation Mode

 Setting of multiple PID sets

When PID control is selected, the system provides 6 sets (PID 0~5) PID parameter sets (P, I, D and IOF parameter) to be selected by the 
user. In general conditions, one set of PID (P0) is adequate. For different setting values (SV), when the same PID value is not adequate 
to control the precision, the user may set up multiple sets of PID parameters for the system to automatically switch-over to an applicable 
PID set.   

Set only one PID set:

Set parameter 

  to 0 (PID 0, the first set) in

Regulation Mode

, set parameter 

  to ON; at this time, the System starts to

Auto Fine-tune the PID value. During the calculation, AT LED lights up in the display panel. When the PV value generates 2 curves of
temperature oscillation based on the SV value, the AT process is completed and the AT LED in the panel goes out. The calculated PID
parameters are displayed in 

  and 

, of which their content can be revised by the user.

Automatic switching-over Multiple PID sets:

Set parameter 

  to 0 (PID 0, the first set) in

Regulation Mode

, set the required SV value (e.g. 100 degree), set parameter

as ON; on completion of auto fine-tuning, the system fills in parameters 

  =100, 

  and

automatically, their content can be revised by the user.
Set parameter 

  to 1 (PID 1, the second set), set the required SV value (e.g. 150 degree), set parameter 

  as ON; on 

completion of auto fine-tuning, the system fills in parameters 

  =150, 

  and 

  automatically. 

Set parameter 

  to AUTO, System will verify on its own whether the current SV value is closer to parameter 

  or 

and load the corresponding PID set automatically. E.g., if SV=110, system will load 

  parameters. If SV=140, system will load 

  parameters. 

If more SV groups are required, PID2~PID5 can be set up with the same sequence as described above. 

 Tune Function 

This machine provides 2 tuning methods (Auto_Tuning and Self_Tuning) for automatic generation of PID parameters (only applicable 
when control mode is set to PID control). 

Auto_Tuning:  by  full  output  of  heating  or  cooling,  temperature  is  allowed  to  oscillate  up  and  down.  Attain  parameters  of  the
magnitude and period, calculate P, I, D, IOF parameters; in addition, save the temperature setting value for performing AT, for the
use of PID control. After Auto_Tuning, PID control will be carried out automatically.

Set parameter

  to 

  in 

Initial Setting Mode

 

AT setting: Set parameter

  to 

  in 

Regulation Mode

 

Self_Tuning: By full output of heating or cooling, max. slope of temperature alteration and system delay can be attained from the
Temperature-Time Curve, and P, I, D, IOF parameters can be calculated. Self tuning can be carried out in RUN mode and in STOP
mode.  In  the  RUN  mode,  PID  parameters  are  allowed  to  be  updated  when  the  machine  is  running;  in  the  STOP  mode,  PID
parameters for the SV value can be attained.

Set parameter

  to   

  in

Initial Setting Mode

 

ST Setting:    set parameter

  to 

  in 

Regulation Mode

 

 Set Reverse Output 

output 1 reverse setting: Set a value corresponding to Y position by parameter

  in 

Initial Setting Mode

, such as xxxY (Y 

can be 0 or 1; 0: forward; 1: reverse) 

Summary of Contents for CND3 Series

Page 1: ...CND3 Series Temperature Controller www omegamanual info Shop online at omega com For latest product manuals User sGuide e mail info omega com...

Page 2: ...rves the right to alter specifications without notice U S A Headquarters Servicing North America Omega Engineering Inc Toll Free 1 800 826 6342 USA Canada only Customer Service 1 800 622 2378 USA Cana...

Page 3: ...or connecting the thermocouple wires 6 Please use wires with resistance when extending or connecting a platinum resistance thermometer RTD 7 Please keep the wire as short as possible when wiring a pl...

Page 4: ...Note Not all combinations may be available Check website under All Models to see list of available models...

Page 5: ...perature 20 C 65 C Altitude Max 2000m Relative Humidity 35 80 RH non condensing Operation There are three modes of operation operation regulation and initial setting When power is applied controller g...

Page 6: ...for the selection of Thermocouple or Platinum Resistance types PT TEMP UNIT Set temperature unit it wil not be displayed when in analog input mode TEMP HIGH Set up upper temperature limit the upper li...

Page 7: ...will select P value accordingly 47 6 I Integral Time Setting display when Crtl PID FUZZY 2PID this parameter is set automatically when TUNE AT Set I value according to the selection of PID No n 0 5 Wh...

Page 8: ...eters into the selected PID group Select the n th PID n 0 5 press to set 0 5 th PID parameters Set up the 0 th PID temperature value press Set up the 5 th PID temperature value press Set up the 0 th p...

Page 9: ...to change the PV and SV display unit select decimal point and switch between F In Operation Mode SP 1 displays decimal place ex 25 5 degree SP 0 displays integral number ex 25 degree In Initial Settin...

Page 10: ...put 4 20mA or linear voltage output 0 10V user s desire output value can be attained by using compensation function For example the analog output 1 can be adjusted in and parameters in Regulation Mode...

Page 11: ...ent output L Linear voltage output S SSR output SV 3 rd digit indicates the function of accessory 2 N No function C CT measure E EVENT1 input R REMOTE input SV 4 th digit indicates the function of acc...

Page 12: ...e Some of the terms are explained as follows a Initial pattern set the program to start running at a sequential number of patterns b Initial Step set the program to start running at a sequential numbe...

Page 13: ...Y position of parameter in Initial Setting Mode e g xxxY Y is 0 or 1 0 normal 1 power off saving Note When any settings or changes of the program parameters are made please save the settings changes t...

Page 14: ...adjustment by parameter in Regulation Mode Remote lower limit Setting Remote lower limit by parameter in Regulation Mode Remote higher limit Setting Remote higher limit by parameter in Regulation Mode...

Page 15: ...Initial Setting Mode To set for heating or cooling control Select desired output control by parameter in Initial Setting Mode If no board is inserted in Output2 selection items are H1 C1 H for heating...

Page 16: ...and the AT LED in the panel goes out The calculated PID parameters are displayed in and of which their content can be revised by the user Automatic switching over Multiple PID sets Set parameter to 0...

Page 17: ...g Set a value corresponding to Y position by parameter in Initial Setting Mode such as xxYx Y can be 0 or 1 0 30A 1 100A CT2 100A setting Set a value corresponding to Y position by parameter in Initia...

Page 18: ...on F1 F2 button can be used to switch between PID and MANUAL control mode ALRS Selecting this function F1 F2 button can be used to reset Alarm Hold status SV2 Selecting this function F1 F2 button can...

Page 19: ...will return to PV SV display mode 3 Enter the new password two times in the screen The screen will return to PV SV display mode with the keys unlocked If the two entries of password are not the same...

Page 20: ...if PV value is lower than the setting value SV AL H This alarm output is OFF when PV value is higher than the setting value SV AL L ON OFF SV AL H SV AL L SV 9 Disconnection Alarm This alarm output op...

Page 21: ...PV Measuring unit is 0 1 updated one time in 0 1 second The following reading value display indicates error occurs 8002H Initial process Temperature value is not got yet 8003H Temperature sensor is n...

Page 22: ...r 0 15 1032H Remaining time of the executed step second Only read 1033H Remaining time of the executed step minute Only read 1034H No of currently executed step Only read 1035H No of currently execute...

Page 23: ...Linear Output 2 Adjust current 1scale 1 A Adjust voltage 1scale 1mV 1119H Adjust Lower Limit of Analog Linear Output 2 Adjust current 1scale 1 A Adjust voltage 1scale 1mV 111AH Adjust Retransmission...

Page 24: ...Starting data address 10H 08H Starting data address 10H 08H 00H 10H 01H 10H 01H 10H Number of data word Bit 00H 00H Start address data 1000H 081xH 01H 17H Data content 03H FFH Data content 03H FFH 02H...

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Page 28: ...http www omega com to contact OMEGA Engineering Inc 800 Connecticut Ave Suite 5N01 Norwalk CT 06854 USA Customer Service 1 800 622 2378 USA Canada only Engineering Service 1 800 872 9436 USA Canada on...

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