Siemens SIMATIC IPC627C Betriebsanleitung Seite 41

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Connecting
6.3 Connecting the (24 V) DC power supply
SIMATIC IPC627C
Operating Instructions, 11/2010, A5E02669068-02
41
Connecting
Steps for connecting the device to the 24 V DC power supply
1 Ensure that the ON/OFF switch is in the '0'
(OFF) position to prevent unintentional startup
of the device when connecting it to the 24 V
power supply.
2 Switch off the 24 V DC power source.
3 Insert the DC power plug.
DC 24 V
ground
protective conductor
4 Fasten the cable with the supplied power plug
latch, if necessary.
Note
Reverse-polarity protection
The DC power supply (24V) has a mechanism to protect against reverse polarity. In the
event the 24 V DC lines are reversed (24 V DC nominal (-15% / +20%) and connected to
ground, the device will not sustain any damage. The device will simply fail to turn on. After
the power supply has been connected correctly, the device will again be ready to operate.
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