Connecting The Power Supply - Siemens simatic PC 577 Operating Instructions Manual

5.4

Connecting the power supply

5.4
Principle
The device can be optionally operated on 110 or 230 V AC systems. The device features an
automatic voltage switch and a power switch.
Caution
Do not touch power cables or data transmission cables during electrical storms and do not
connect any cables.
Unplug the mains connector from the socket to be sure the electricity is disconnected.
The device features a safety-certified power cable. Connect the device only to a grounding
outlet. Operate the device only on grounded power cables and not on impedance grounding
systems such as IT systems.
Make sure that the local supply voltage complies with the permissible rated voltage for the
device.
Warning
Select an adequately large cable diameter so that the device is not damaged by the cable
during a short circuit.
Localized information
Outside of the USA and Canada, 230 V AC power supply:
If you do not use the safety-certified power cable, use a flexible cable with the following
characteristics:
• At least 18 AWG conductor cross-section
• Grounding plug 15 A, 250 V
SIMATIC Panel PC 577
Operating Instructions, Release 04/2006, A5E00798484-01
Notice
Ensure that the cable set conforms to the respective national safety regulations and is
appropriately labeled.
Connecting
5.4 Connecting the power supply
5-9