Relay PW250 - Connectors in the Terminal Compartment; Interfaces at the Housing

PW250 · User Manual Version 1.1 – 11 / 2019
4
PW250
2.2 Connectors in the terminal compartment
PE / PE
Protective conductor (earth)
L / N
Main power supply 110VAC to 240 VAC, to be connected only by electricians
M-Bus + -
M-Bus output, wires to the M-Bus meters, 3 pairs of parallel connections
M-Bus IN Repeater
M-Bus Repeater input for network extension
RS485 A B
RS485 interface, 2-wire, A = + / B = -
RS485 Term
Terminator for RS485 interface, jumper placed (default) = 120 Ω
RS232 RX,TX,GND
RS232C interface, RX = PC receives data, TX = PC transmits data, GND
Attention: When laying the cables in the terminal compartment, please take care that the light pipes are not
blocked by cables after closing the housing cover.
2.3 Interfaces at the housing
Ethernet RS232C USB Cable glands
Ethernet 10/100MBit RJ45 Ethernet socket for network connection
RS232 RS232C D-SUB9 socket
USB Device USB connector of the internal USB-to-RS232 converter (FTDI).
Cable glands for power supply, M-Bus, RS232C, RS485 and M-Bus IN
-
+