Siemens SIMATIC IPC477E Operating Instructions Manual page 55

Procedure
Note
Reverse polarity protection
The 24 V DC power supply is protected against polarity reversal. If you mix up the 24 V DC
connecting cables and ground, the device is not damaged but does not switch on. After the
power supply has been connected correctly, the device will again be ready to operate.
SIMATIC IPC477E
Operating Instructions, 11/2020, A5E37455003-AF
Mounting and connecting the device
3.3 Connecting the device
Switch off the 24 V DC power sup-
ply.
Connect the wires of the power
supply.
Connect the connection terminal
at the marked position.
Secure the connection terminal
with the marked screws.
Secure the connection cable to the
nearest attachment eyelet with a
cable tie.
55