WIKA CF2S - Manual (Page 40)

Operating Instructions Temperature Indicating Controller CF2S
V1.2 • 08/2004 - 40 -
Alarm 1 (A1) output
The alarm action point is set by ±deviation to main setting (except Process value alarm).
[When the alarm action is set as energized]
When the input exceeds the range, the output turns ON or OFF
(in the case of High/Low limit range alarm).
[When the alarm action is set as deenergized]
The output acts conversely.
One of the alarms can be selected by rotary switch and DIP switch from 14 types of alarm,
High limit alarm, Low limit alarm, High/Low limits alarm, High/Low limit range alarm,
Process high alarm and Process low alarm, and the standby function is applied to them
respectively, as well as No alarm and Pattern end output.
Setting accuracy
: Within ±0.3% of input range full scale ±1digit
Action : ON/OFF action, Hysteresis setting range, 0.1 to 100.0°C (°F)
Output : Relay contact 1a
Control capacity 250Vac 3A (resistive load)
250Vac 1A (inductive load cosø =0.4)
(However, A1, A2 common terminal, Max. 3A)
Controlling action
The fuzzy self-tuning PID, PID, PD or ON/OFF action is selectable by DIP switch.
Fuzzy self-tuning PID action
Proportional band (P) : Automatic
Integral time (I) : Automatic
Derivative time (D) : Automatic
Anti-reset windup (ARW) : Automatic
Proportional cycle : 1 to 120s
Output limiter : 0 to 100% (In the case of Current output, –5 to 105%)
PID action (with auto-tuning function)
Proportional band (P) : 0.1 to 999.9%
Integral time (I) : 0 to 3600s (off when set to 0)
Derivative time (D) : 0 to 3600s (off when set to 0)
Anti-reset windup (ARW) : Automatic
Proportional cycle : 1 to 120s
Output limiter : 0 to 100% (In the case of Current output, –5 to 105%)
PD action
Proportional band (P) : 0.1 to 999.9%
Derivative time (D) : 0 to 3600s (Off when set to 0)
Proportional cycle : 1 to 120s
Reset : ± Proportional band converted value
Output limiter : 0 to 100% (In the case of Current output, –5 to 105%)
ON/OFF action
Hysteresis setting range : 0.1 to 100.0°C (°F)