Installation And Startup - Relay MR004C User Manual

1 Installation and startup

Drill pattern:
Connectors:
PC
GND TX RX S+ S-
RS232 (PC) RS485
MODEM
RS232: GND
TX
RX
RS485: S+, S-
M-Bus: M+, M-
Power:
N, L
User manual MR004DL/FA
GmbH, Stettiner Str. 38, D-33106 Paderborn
Power Slave Max Short
M+ M- M+ M- M+ M-
Ground potential of the interface
Data line for reception (transmit of PC)
Data line for transmission (receive of PC)
Terminals for RS-485 interface (observe polarity)
M-Bus terminals (3 pairs). M-Bus devices are wired polarity
independent in parallel to the same line. The signs +, - mark only
the different bus lines.
Earth for symmetry of bus and surge diverting
Terminals for power supply (230V AC or 110VAC for –US version),
polarity independent
M-Bus
07.03.02, Version 1.2
Fuse
Sicherung
N L
3