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Value + Compensation Value.   
For example: Measure Value=25.0; Compensation = 1.2. After applying to the Compensation equation PV=26.2. 

Linear  Compensation  Gain  (setting  range  =  -0.999~0.999).  Linear  Compensation  Gain  Calculation  equation:  PV  =

Measure Value* (1 + Gain/1.000) + Compensation.
For example: Measure Value=25.0; Gain= 0.100. After applying to the Gain calculation equation PV= 25.0 * (1 + 0.100 / 1.000) =
27.5

If temperature deviation is the same in every temperature, settting linear compensation value can solve deviation problem. If temperature 
deviation  varies  upon  different  temperatures,  calculate  the  linear  deviation  error  and  adjusts  the  temperature  by  setting  Gain  and 
Compensation value. 

 Applications of Analog Voltage & Current Input 

The input range of analog voltage and current are used as the uppler/lower limit of the controller’s voltage and current setting. When 
setting up the desire voltage or current, it must lies within the range of upper/lower limit. For example: If the range of analog input voltage 
is 0~5V, the upper limit setting will be 5000 and lower limit setting will be 0. If the decimal setting is set to 3 decimal place, a input voltage 
of 2.5V will displays as 2.500. The equation of Display Value = (Upper limit setting of controller– Lower limit setting of controller)*(Input 
voltage- Analog lower limit)/(Analog upper limit– analog lower limit) + Lower limit setting of controller.   

 Disable the Cold Junction Function 

The cold conjunction function of a thermocouple is set to ENABLE, but in some cases, we can set it to DISABLE.   

 

In Initial Setting Mode, 

  is used to set the first digit (Y) of Yxxx, (when Y=0, Enable; when Y=1, Disable). 

Analog Output Compensation 

When the output mode is set to analog current output (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”.  The  output  value  can  be  positive  or  negative  (+/-)  and  it  can  be  changed  by  pressing  the  Up/Down  key  on  the 
temperature controller. The scale of each pressing is an increase or decrease of 1uA and 1mV.   
For example: To change the current output range from 4~20mA to 3.9~20.5mA, set 

  to 500 (20.5-20=0.5mA; 0.5mA/1uA= 500). 

and set 

  to -100 (3.9-4=-0.1mA; -0.1mA/1uA=-100).   

To control the output manually: Set parameter

  to 

  in

Initial Setting Mode

.   

To set output to 0%: Set parameter

  to 

  or 

  to 

  in

Operation Mode

To adjust the lower limit of analog output: Input a desire value and check the meter to adjust the analog input value to desire value
(For example: 4~20 m A, adjusting analog value will be 20 m A). Set parameter 

  (Output 1) or 

  (Output 2) to your

desire value in 

Regulation Mode

.

To set output to 100%: Set parameter

  (Output 1) = 

  or   

  (Output 2) = 

  in 

Operation Mode

To adjust the lower limit of analog output: Input a desire value and adjust the analog input value to your desire value (For example:
4~20  m  A,  adjusting  analog  value  will  be  20  m  A).  Set 

  (Output  1)  or 

  (Output  2)  to  your  desire  value  in

Regulation Mode

.

 Retransmission and Compensation Adjusting 

When  the  input  value  changes,  the  retransmission  output  will  also  be  changed  correspondingly.  For  example:  If  retransmission  = 
4~20mA ; uppler/lower limit = 100.0 ~ 0. Wen the controller reads 0, it outputs 4mA; when the controller reads 100, it outputs 20mA. The 
value can also be a negative number to generate a negative slope. For negative slope, sets upper/lower limit = 0~100.0. In this case, 
when the controller reads 0, it outputs 20mA; when the controller reads 100, it outputs 4mA. Refer to the slope diagram below.   

Output = 

Negative Slope 

Output = 

Positive Slope 

(Figure 1: Propotional Output Diagram)

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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