The function module is used for converting an analog signal to an input/output ratio with the time base 1 s. The module can only be used in conjunction with 3RF21 and 3RF23 single-phase solid-state switching devices or 3RF22 and 3RF24 three-phase devices. It can be used on versions with 24 V DC or 24 V AC/DC control supply voltage.

Note:

We do not recommend the use of single-pole solid-state switching devices with converters, power controllers or controllers of AC loads in full-wave operating mode. Since the function modules do not synchronize with each other, this may lead to fluctuations in the heating power; optimum compensation can no longer be ensured, especially for setpoints < 50 %.