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Connecting the device
4.2 Connection of equipotential bonding line
4.2
Connection of equipotential bonding line
A low-resistance ground connection ensures that interference signals generated by external
power supply cables, signal cables or other cables to the I/O devices are safely discharged to
earth.
The connection for functional earthing on a device has a large surface, makes contact over a
large area and is marked with the following symbol.
You can find information on the position of the functional earthing connection under "Rear of
the device (Page 19)".
Requirement
• Screwdriver TORX T20
• Equipotential bonding conductor with a minimum cross section of 2.5 mm
Procedure
1. Make the connection for functional ground via an equipotential bonding line to the
equipotential bonding rail or grounding bar of the control cabinet in which the device is
installed.
4.3
Connecting power supply units
4.3.1
Connecting the power supply unit 550 W
Injury to persons or damage to property when operated on an incorrect power supply
system
If you connect the device to an unsuitable power supply, the device receives voltages and
currents that are too high or too low.
Injuries to persons, malfunctions or a damage to the device can result.
• The permissible rated voltage of the device must match the local mains voltage.
• Operate the device only in grounded electricity grids (TN networks in accordance with
• Operation via non-grounded or impedance-grounded grids is prohibited.
58
WARNING
VDE 0100 Part 100 or IEC 60364-1).
2
Workstation SIMATIC IPC RW-545A Operating
Instructions, 08/2023, A5E52943278-AA
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