WIKA CS4S - Manual (Page 34)

Operating Instructions Temperature Indicating Controller CS4S
V1.1
•
10/2006 - 34 -
The indication of PV
display is abnormal or
unstable. • Is sensor input or temperature unit (°C or °F) correct?
Select the proper sensor input and temperature unit (°C or °F).
• Sensor correcting value is unsuitable. Set the value suitably.
• Is the specification of the sensor correct?
Set the sensor to the proper specification.
• AC leaks into the sensor circuit. Use an ungrounded type sensor.
• There may be a piece of equipment producing inductive interference or
noise near the controller.
Keep the equipment producing inductive interference or noise away
from the controller.
The PV display is
indicating [
].
• Internal memory is defective.
Contact our agency or us.
10.2 Key operation
Problem Presumed cause and solution
• Unable to set the SV, P, I,
D, proportional cycle or
Alarm setting
• The values do not change
by , key operation.
• Setting value lock (Lock 1 or Lock 2) is designated.
Release the lock designation.
• During PID auto-tuning or auto-reset.
In the case of PID auto-tuning, cancel the auto-tuning.
It takes approximately 4 minutes until auto-reset is finished.
The setting indication does
not change in the input
range even if the
,
keys are pressed, and
unable to set the value.
• SV high or low limit value in Auxiliary function setting mode 1 may be set
at the point the value does not change.
Set the proper value while in the Auxiliary function setting mode 1.
10.3 Control
Problem Presumed cause and solution
Temperature does not rise. • Sensor is out of order. Replace the sensor.
• Sensor or control output terminals are not securely mounted to the
instrument input terminals.
Mount the sensor or control output terminals to the instrument input
terminals securely.
• The wiring of sensor or control output terminals is incorrect.
Connect it properly.
The control output remains
ON status. • OUT1 or OUT2 low limit value is set to 100 % or greater in Auxiliary
function setting mode 2.
Set the value appropriately.
The control output remains
OFF status. • OUT1 or OUT2 high limit value is set to 0 % or less in Auxiliary function
setting mode 2.
Set the value appropriately.
• If you have any inquiries, please consult our agency or the shop where you purchased the unit.