3 protective ground connection – Siemens Simatic Industrial PC IPC427C User Manual

Page 35

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Connecting

6.3 Protective ground connection

SIMATIC IPC427C
Operating Instructions, 04/2009, A5E02414743-01

35

6.3

Protective ground connection

The PE terminal (M4 thread) on the device (large surface, large-area contact) must be

connected to the PE conductor on the cabinet or system in which the PC is to be installed.

The conductor cross-section must not be less than 2.5 mm

2

.

The PE terminal is needed to protect the device and ensures that interference signals

generated by external power cables, signal cables or cables to the I/O modules are safely

discharged to earth.
Required tool for protective earth terminal: TORX T20 screwdriver

Protective earth terminal
Connect the PE terminal (M4 thread)

① on the device to the PE conductor

on the cabinet or system in which the

PC will be installed. The minimum

conductor cross-section may not be

less than 2,5 mm

2

.

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