WIKA CF1M User Manual
Page 9
Operating Instructions Temperature Indicating Controller CF1M
V1.
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Output Direct/Reverse change
• Changes the output action Reverse (Heating) or Direct (Cooling).
• Reverse (Heating) action:
Direct (Cooling) action :
Reverse
(Heating)
action
Auto-tuning bias setting
• Sets PID auto-tuning bias value.
• 0 to 50°C (0 to 100°F)
With decimal point, 0.0 to 50.0°C (0.0 to 100.0°F)
20°C
(40°F)
Sensor correction function
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,
the accuracy of sensors affects the control.
Therefore, sometimes the measuring temperature (input value) does not concur with the
same setting value. In such a case, the control can be set with the desired temperature
by shifting the input value of sensors.
Loop break alarm
After the manipulating value has reached 100% or output high limit value, if the process variable (PV)
has not risen at least as high as the span value by the time it takes to assess the loop break alarm,
the alarm will be activated.
After the manipulating value has reached 0% or output low limit value, if the process variable (PV)
has not fallen at least as low as the value of the span within the time it takes to assess the loop break
alarm, the alarm will also be activated.
When the control action is Direct (Cooling), the alarm acts conversely.
Energized/Deenergized
When the status of temperature alarm action is selected energized, event output
(between terminal 11 and 12) is conducted (ON) status while the event output
indicator is lit. Event output is not conducted (OFF) status while the event output
indicator is not lit.
When the status of temperature alarm action is selected deenergized, event output
(between terminal 11 and 12) is not conducted (OFF) status while the event output
indicator is lit. Event output is conducted (ON) status while the event output
indicator is not lit.
Main
Alarm setting
Main
Alarm setting
setting
setting
In the case of high limit alarm
In the case of high limit alarm
(energized status)
(deenergized status)
Setting value memory function
If the option [SV2] is applied, the setting value memory number can be selected by
external operation. (However, selectable setting value memory number is No. 2 only.)
To select the setting value memory number 2, connect the terminals between 8 and 9.
Memory number cannot be changed during setting mode and PID auto-tuning.
ON
OFF
ON
OFF
Hysteresis
Hysteresis