WIKA CS4R - Manual (Page 18)

Operating Instructions Temperature Indicating Controller CS4R
V1.2 • 05/2006 - 18 -
6. Converter function
Caution
• When using this controller as a converter, take 1 second into consideration since input/output
response time is approx. 1 second.
• When switching from converter function to controller function, the control parameter and values
set by converter function are held even if the function is switched to controller function.
So, correct the control parameter and values which has been set by converter function to the
values necessary for the controller function after switching to the controller function.
The converter function of this instrument converts each input value (thermocouple, RTD, DC voltage and
DC current inputs) to “4 ... 20mA DC” using the control parameter of the controller, and outputs it.
When this instrument is used as a converter, follow steps (1) to (7) described below.
After steps (1) to (7) are finished, this instrument can be used as a converter.
(1) Wire this controller (Power supply, Input and Output).
(2) Turn the power of this controller ON.
(3) Bring up “Auxiliary function setting mode 2” by pressing the
and MODE key (for approx. 3s).
(4) Select the sensor type from “Input type selection ( )”.
(5) Set the high limit of the value that is going to be converted during “Scaling high limit setting ( )”.
(6) Set the low limit of the value that is going to be converted during “Scaling low limit setting ( )”.
(7) Select converter ( ) from “Controller/Converter function selection ( )”.
• To activate the alarm action by Converter function, set the alarm action to Process alarm action.
If converter function is selected from “Controller/Converter function selection” in Auxiliary function setting
mode 2, the parameters below are automatically set. (Table 6-1)
However, this is applied only to the output analogue current signal (4...20 mA).
(Table 6-1)
Setting item Setting value
SV Scaling low limit
Proportional band 100.0%
Integral time 0 seconds
Derivative time 0 seconds
Manual reset setting 0.0
Alarm setting 0
Loop break alarm action time 0 seconds
Loop break alarm action span 0
Direct/Reverse action selection Direct action