ISOMETER® isoRW685W-D(-B)
isoRW685W-D-x_D00419_00_Q_DEEN/02.2020
5
Connection
Legend to terminal diagrams
Terminal
Connections
A1/+ A2/- ** Power supply,
U
s
= 24…240 V (50…400 Hz)
L1/+, L2, L3/- Connections to the system to be monitored
AC, 0…690 V
AC, 0…600 V für UL applications
DC, 0…1000 V
KE E
Connection to ground
I1…I3 (X1)
Configurable digital inputs (e.g. Test,
Reset,…)
A, B (X1)
Serial interface RS-485 (BS bus)
+ (X1)
Supply voltage of the inputs and outputs
I, Q and M.
Electrical overload protection. Automatic
shutdown in the event of a short circuit and
transient (resettable).
If the supply is via an external 24 V source,
then A1/+, A2/- must not be connected.
Q1, Q2 (X1)
Configurable digital output
M+ (X1)
Configurable analogue output (e.g. measu-
ring instrument)
(X1)
Reference potential ground
RJ45 (ETH)
Ethernet connector, webserver, modbus, IP
R
Termination for the BS bus
11 12 14
Relay 1
21 22 24
Relay 2
i
** Provide line protection! According to DIN
VDE 0100-430, a line protection shall be provi-
ded for the supply voltage
14
12
11
24
22
21
ETH
R
X1
E
KE
L3/-
L2
L1/+
A2/–
A1/+
