Connectors - Relay PW100 User Manual

2.3 Connectors

The following figure shows the top view of the connectors:
Upper terminals (from left to right):
Typ
POWER
M-BUS
Lower terminals (from left to right):
Typ
ETHERNET
RS485
USB
RS232 TX / RX / GND
2
RS232 TX / RX / GND
1
M-BUS REPEATER
PW100 · User Manual Version 1.0 - 11/2020
Signal Beschreibung
+ / - Output voltage of the power supply 42VDC (mind the polarity)
⏚
Protective conductor (earth) for symmetry and protection of the M-Bus
- / + M-Bus output, wires to the M-Bus meters, 3 pairs of parallel connections
Signal Beschreibung
10/100MBit RJ45 Ethernet socket for network connection
B- / A+ / GND RS485 Interface, 2-wire, B = - / A = + / GND = ground reference
USB connector of the internal USB-to-RS232 converter (FTDI)
RS232C Interface No. 2, TX = PC transmits, RX = PC receives, GND
RS232C Interface No. 1, TX = PC transmits, RX = PC receives, GND
M-Bus Repeater input for network extension
PW100
All terminals are pluggable
and thus make wiring and
replacement of the PW100
easier in the event of a fault.
Attention: Please make
sure to put the clamps back
in the correct place after re-
moving them. Incorrectly
positioned terminals can
lead to defects.
4