Operating Instructions (compact)
1.8 Connecting
SIMATIC HMI IPC577C
20
Operating Instructions (Compact), 05/2009, A5E02368077-01
Note equipotential bonding
A low-impedance earth connection ensures that interference signals generated by external
power supply cables, signal cables or cables to the peripherals are safely discharged to
earth.
Required tool for equipotential bonding: TORX T20 screwdriver.
Steps for connecting the equipotential bonding
1. Connect the equipotential bonding (M4
threads) on the device (large surface, large-
area contact) with the protective earth
conductor of the cabinet or plant in which the
device is to be installed.
The minimum conductor cross-section may
not amount to less than 5 mm
2
.
1.8.3
Connecting the 100 - 240 V AC Power Supply
General connection information
Note the following in order to operate the device safely and according to regulation:
Note
Voltage range
The varying voltage power supply module is designed for operation on 100 to 240 V AC
networks. It is not necessary to adjust the voltage range.
NOTICE
Risk of damage
Do not connect or disconnect power and data cables during thunderstorms.
WARNING
Power supply network
The device is designed for operation on grounded power supply networks (TN networks to
VDE 0100, Part 300, or IEC 60364-3).
It is not designed for operation on ungrounded or impedance-grounded power networks (IT
networks).