EngyCal RS33
Wiring
Hauser
31
-
+
RxD/TxD (+)
RxD/TxD (-)
R
L
R
L
further instrumentation
A0014603-EN
22
Connection of Modbus RTU
5.5.4
M-Bus (optional)
The M-Bus (Meter Bus) interface is galvanically isolated (testing voltage: 500 V) and used to
connect the device to higher-order systems to transmit all measured values and process
values. It is connected via a 3-pin plug-in terminal in the housing cover.
Master
further instrumentation
A0014604-EN
23
Connection of M-Bus
5.6
Post-connection check
After completing the device's electrical installation, carry out the following checks:
Device condition and specifications
Notes
Is the device or cable damaged (visual inspection)?
-
Electrical connection
Notes
Does the supply voltage match the specifications on the nameplate?
100 to 230 V AC/DC (±10 %) (50/60 Hz)
24 V DC (–50 % / +75 %)
24 V AC (±50 %) 50/60 Hz
Do the cables have adequate strain relief?
-
Are the power supply and signal cables correctly connected?
See wiring diagram on the housing
