PKZ2 Features

PKZ2 Accessory Diagram

PKZ2 Trip Blocks

PKZ2 Switching and Signaling
(locally and remotely)

The PKZ2 has intelligent accessories to allow flexible solutions to a wide variety of communication tasks. The electronic remote operator RS-PKZ2 can be actuated directly, without any coupling elements, from the semiconductor outputs of a PLC (24 V DC). With electrical isolation between CONTROL and LINE, it can take the power for the switching process from a separate power supply (e.g. 230 V 50 Hz). On the RE-PKZ2, the electronic remote operator for standard applications, CONTROL and LINE are separate inputs too, although they use the same potential reference. This allows actuation by low consumption units, such as control circuit devices.

Like the basic unit, the door coupling handle has ON, OFF and TRIPPED positions. When installed in the control panel door, the handle enables the to be interlocked, if required.

Valuable not just in the chemical
industry: the trip block ZMRPKZ2.
When used in combination with the
PKZ2 basic unit, the trip block with
overload relay function switches Off
the down-stream contactor, rather than
disconnecting the circuit-breaker in the
event of a motor overload. The circuit breaker PKZ2 thus remains switched
On and does not need to be manually
reset locally. After a cooling-down phase for the trip block ZMR, the contactor is reset automatically. In the “Manual” setting, the ZMR block has to be reset by hand.
 

PKZ2 Circuit Diagrams

PKZ2 Overview