Power controllers for 3RF2 single-phase solid-state switching devices

The power controller is a function module for the autonomous power control of complex heating systems and inductive loads.

The following functions have been integrated:

• Power controller
  For adjusting the power of the connected load. Here, the setpoint value is set with a rotary knob on the module as a percentage with reference to the 100 % power stored as a setpoint value.
• Inrush current limitation
  With the aid of an adjustable voltage ramp, the inrush current is limited by means of phase control. This is useful above all with loads such as lamps or infrared lamps which have an inrush transient current.
• Load circuit monitoring
  For detecting load failure, partial load faults, alloyed power semiconductors, lack of voltage or a break in the load circuit.

Note:

In phase control operating mode, partial load faults are detected by cyclic "scanning" of the load; the functional principle is described in detail in the data sheets.

Special version:
Deviations from the standard version

3RF2904‑0KA13‑0KC0

During the teaching process the connected solid-state relay or contactor is not activated; i.e. no current flow takes place. No current reference value is stored.
No part-load monitoring!

3RF29..‑0KA1.‑0KT0

No part-load monitoring!