GTCOM2 User manual
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ON/OFF control action turns the output ON or OFF based on the set point. The output frequently changes according to minute temperature changes as a
result, and this shortens the life of the output relay or unfavorably affects some devices connected to the Temperature Controller. To prevent this from
happening, a temperature band called hysteresis is created between the ON and OFF operations.
In cases where this cycling occurs rapidly, and to prevent damage to contactors and valves, an on-
off differential, or “hysteresis, “is added to the controller
operations. This differential requires that the temperature exceed set point by a certain amount before the output will turn off or on again.
Figure 43 The example of configuration. Sera2> Automation/ Sensors. Double click on the selected line.
Max Value hysteresis is the same hysteresis for Output activation and for alarm event.
3.5.6
The example of heating, cooling control
