Connecting The Power Supply - Siemens SIMATIC IPC427E Operating Instructions Manual

Procedure
1. Crimp the cable lug onto the protective conductor.
2. Screw the cable lug onto the protective
conductor connection as shown.
3. Wire the protective conductor to the protective conductor connection of the control cabi-
net in which the device is installed.
3.3.2.2

Connecting the power supply

Please note the following to ensure you operate the device safely and in accordance with
regulations:
Risk of fire and electric shock
The on/off switch does not isolate the device from the power supply. Risk of electric shock if
the device is opened incorrectly or defective. There is also a risk of fire if the device or
connecting cables are damaged.
Death or serious bodily injury can result.
You should therefore protect yourself and the device as follows:
• Always pull out the power plug when you are not using the device or if the device is
• Connect the device to a protective conductor as instructed (see section "Connecting the
• For control cabinet mounting: Use a central, easily accessible AC circuit breaker close to
Note
The device may only be connected to a 24 V DC power supply which meets the requirements
of a safe extra-low voltage (SELV/PELV) in accordance with the standard IEC/EN/DIN EN/UL
61010-2-201. The power supply must fulfill the requirements of NEC Class 2 or Limited
Energy according to IEC/EN/DIN EN/UL 61010-2-201.
If the device is installed in an enclosure that complies with section 9.3.2. c) of IEC/UL/EN
61010-1 and IEC/UL/EN 61010-2-201, it can be supplied from a source "higher than NEC Class
2 / Limited Energy". The device is then classified as "OPEN EQUIPMENT".
SIMATIC IPC427E
Operating Instructions, 02/2021, A5E37454814-AE
WARNING
defective. The power plug must be freely accessible.
protective conductor").
the device, if possible.
Installing and connecting the device
3.3 Connecting the device
33