Commissioning
Operating Manual PNOZ m EF 4AI
1004650-EN-02
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6
Commissioning
6.1
Wiring
The wiring is defined in the circuit diagram of the PNOZmulti Configurator.
Please note:
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Information given in the
Technical details [
34]
must be followed.
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The position of the expansion module is specified in the Hardware configuration of the
PNOZmulti Configurator.
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Use copper wiring with a temperature stability of 75 °C.
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The power supply that feeds the expansion module and the sensors must meet the regu-
lations for extra low voltages with protective electrical separation (SELV, PELV).
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Supply connections
The 6 supply connections 24 V and 0 V to the terminal blocks X3 and X4 are interconnec-
ted internally.
– The supply of the analogue input module PNOZ m EF 4AI has to be made via the
supply connections 24 V and 0 V at the terminal block X4.
– The other supply connections can be used for the supply of the sensors.
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Protect the supply voltage as follows:
– Circuit breaker, characteristic C – 2 … 6 A
or
– Blow-out fuse, slow, 2 … 6 A
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Use shielded, twisted pair cable for the connections on the input current circuits.
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Separate the supply voltage cable from the analogue input current lines.
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For transducers located outside the control cabinet:
Where the cable enters the con-
trol cabinet, the cable shield
must
be connected to the earth potential over a wide sur-
face area and with low impedance (connect in star).
6.2
Connection
Supply voltage
Supply voltage
DC
