Terminals A1 and A2 for 24V AC / DC.
An interruption of the power supply is effected by means of the mains disconnector of the compressor modules.
The basic equipment of the FOCUS consists of a basic module and a keypad/display unit (TAN).
Amongst others the following modules are optionally available:
- With a second RS485 interface for the connection of additional compressors if the serial interface is used for other purpose.
- With changeover contact relay: function can be selected by rotary switch.
- System pressure module for a system pressure transmitter on the master compressor
- Interconnection of the modules may only be completed in a currentless state using the provided leads supplied with the equipment.