Connecting
5.4 Connecting equipotential bonding
SIMATIC Box PC 827B
Getting Started, 07/2008, A5E01127540-02
29
5.4
Connecting equipotential bonding
The equipotential bonding 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
device is to be installed. The minimum cross-section is 5 mm
2
.
The equipotential bonding terminal ensures that interference signals generated by external
power supply cables, signal cables or cables to the I/O modules are safely discharged to
earth.
Connecting equipotential bonding
Connect the equipotential bonding
terminal on the device (large surface,
large-area contact) to the central
grounding busbar of the cabinet in
which the device is installed. The
minimum cross-section is 5 mm
2
.