WIKA CS4L - Manual (Page 28)

Operating Instructions Temperature Indicating Controller CS4H / CS4L
V1.1 • 05/2006 - 28 -
[Sensor correction function]
This corrects the input value from the sensor.
When a sensor cannot be set at a location where control is desired, the sensor measuring temperature
may deviate from the temperature in the controlled location.
When controlling with plural controllers, sometimes the temperatures measured (input value) do not
concur with the same setting value due to difference in sensor accuracy or dispersion of load capacities.
In such a case, the control can be set at the desired temperature by adjusting the input value of sensors.
However, it is effective within the input rating range regardless of the sensor correction value.
[Loop break alarm]
The alarm will be activated when the process variable (PV) does not rise as much as the span or greater
within the time it takes to assess the loop break alarm after the manipulated variable has reached 100 %
or the output high limit value.
The alarm will also be activated when the process variable (PV) does not fall as much value as the span
or greater within the time it takes to assess loop break alarm after the manipulated variable has reached
0 % or the output low limit value.
When the control action is Direct (Cooling), read “fall” for “rise” and vice versa.
[Energized/Deenergized]
When alarm action energized is selected, the alarm output (between terminals 7-8, or 12-13) is conducted
(ON) while the alarm output indicator is lit.
The alarm output is not conducted (OFF) while the alarm output indicator is not lit. See (Fig. 5.5-1).
When alarm action deenergized is selected, the alarm output (between terminals 7-8, or 12-13) is not
conducted (OFF) while the alarm output indicator is lit.
The alarm output is conducted (ON) while the alarm output indicator is not lit. See (Fig. 5.5-2).
High limit alarm (when Energized is set) High limit alarm (when Deenergized is set)
(Fig. 5.5-1) (Fig. 5.5-2)
[SV1/SV2 external selection]
SV1 or SV2 can be selected by the external operation.
Terminals between 14 and 17 open: SV1 can be selected.
Terminals between 14 and 17 closed: SV2 can be selected.
SV1 or SV2 cannot be changed during setting mode or PID auto-tuning.
OFF
ON
A1 hysteresis
SV setting + A1 set point
OFF
ON
SV setting + A1 set point
A1 hysteresis