Outline

0XRM-4A/4B/4D (Extension Relay Module) is an extension module which can extend output of lighting control unit (LCU series), and can extend 4 relay outputs.
0LCU-2000 can be extended to maximum 31 units using RS-485 communication. In the case of a short distance (inside the panel), wiring can be simply done using cable harness after mounting XRM-4A and, in the case of a long distance, extension can be done using a standard RS-485 communication cable after mounting XRM-4B.

Functions and features

• Having a modularized design, it can be installed on a small panel using the cable harness provided for connection.
• It is a module type containing a 20 A or 25 A latch relay, of which attachment and detachment is easy.
• Total 128 circuits can be used by connecting maximum 31 units to LCU-2000
  (4A: for short distance, 4B: for long distance, 4D: for DC power)
• It can be directly connected to the communication line of the lighting switch (XRM-4B).
• Control state and communication operation state can be checked.
• Photo isolation circuit for prevention of noise is adopted.
• Low power consumption, and self-diagnosis function