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10.4.3.1 Assignment Modbus Modules
The controller can be extended in each case by 4 relay outputs (4 x 230 V AC) and 4 analogue outputs (4 x
0..10 V DC) with the Modbus modules from Metz.
Type
Photo
Function
Part number
Modbus analogue module
4 analogue outputs
0..10 V DC
MODBAOUT02
Modbus
relay module
4 relay outputs with
manual control switches 230 V AC
MODBDOUT04
Power
supply
-
230 V AC /
24 V DC, 1.25 A
KGLNT24V1P
Warning about dangerous electrical voltage! Danger to life - Danger of electric shock!
If supply
voltage is connected to the analogue outputs, there is a risk of personal injury as the RS485 interface
is
not
galvanically isolated from other system components (e.g. pressure transmitters). Furthermore
this will destroy the controller!
BEFORE
connecting and disconnecting, it must be checked that no voltage is present at the 230 V AC
relay outputs! Low voltage
and
safety extra-low voltage must not be applied together at the relay
outputs!
ATTENTION
Malfunction due to interference!
All supply lines from and to the controller (with the exception of the
230 V power supply and signal lines) must be shielded (cable type LiYCY)! This particularly applies for
the analogue inputs and outputs (e.g. sensor supply lines). As a general rule, care should be taken to
ensure that signal cables and cables carrying mains voltage are routed in separate cable channels