30
Installation GRS103
Release
01
03/2022
5.3 Power supply
Note: Note the safety instructions in “Requirements for connecting electrical
wires” on page 12.
5.3.1 Basic device
Figure 9: Power supply: Position of supply voltage inputs on the device
The supply voltage is electrically isolated from the casing.
For devices with 2 supply voltage connections:
The supply voltage can be connected redundantly. Both inputs are
uncoupled. The load is not distributed. With redundant supply, the standard
power supply supplies the device on its own. The redundant power supply
becomes active automatically if the standard power supply fails. Normally the
redundant power supply runs in stand-by mode.
Note: With non-redundant supply of the mains voltage, the device reports a
power failure. You can prevent this message by applying the supply voltage
via both inputs, or by changing the configuration in the Management.
WARNING
ELECTRIC SHOCK
Connect only a supply voltage that corresponds to the type plate of your
device.
Failure to follow these instructions can result in death, serious injury,
or equipment damage.
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