Operating Instructions (compact)
1.8 Connecting
SIMATIC HMI IPC577C
Operating Instructions (Compact), 05/2009, A5E02368077-01
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NOTICE
Permitted mains voltage
The permitted nominal voltage of the device must conform with local mains voltage.
NOTICE
Power disconnection
The mains connector must be disconnected to fully isolate the device from mains. Ensure
easy access to this area.
A master mains disconnect switch must be installed if the device is mounted in a switch
cabinet.
Always ensure free and easy access to the power inlet on the device or that the safety
power outlet of the building installation is freely accessible and located close to the device.
NOTICE
If a Compact Flash card is used in the device, be sure that the card is properly installed
before you connect it.
Note
Power factor correction
The power supply contains an active PFC (Power Factor Correction) circuit to conform to the
EMC guidelines.
Uninterruptible AC power systems (UPS) must supply a sinusoidal output voltage in the
normal and buffered mode when used with SIMATIC PCs with an active PFC.
UPS characteristics are described and classified in the standards EN 50091-3 and IEC
62040-3. Devices with sinusoidal output voltage in the normal and buffered mode are
identified with the classification "VFI-SS-...." or "VI-SS-....".