Connecting Power; Connecting High Ac/Dc Power - Siemens SIMATIC NET RUGGEDCOM RST2228P Installation Manual

2.5

Connecting Power

The RUGGEDCOM RST2228P supports dual redundant AC and/or DC power supplies
that can be installed in any combination.
The RUGGEDCOM RST2228P can be equipped with either a screw-type or pluggable
terminal block, which provides power to both power supplies. The screw-type ter-
minal block is installed using Phillips screws and compression plates, allowing either
bare wire connections or crimped terminal lugs. Use #6 size ring lugs for secure, reli-
able connections under severe shock or vibration.
Electrocution hazard – risk of serious personal injury or death. The device may have
two power supplies equipped, which may be connected to separate power sources.
Make sure all power sources are off before servicing the power supply terminals.
Electrical hazard – risk of damage to equipment. Do not exceed the power supply
voltage ratings for each power supply input. For example, if PS1 is a low DC power
supply, do not connect the PS1 terminals to a high AC/DC power source.
NOTICE
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2.5.1

Connecting High AC/DC Power

To connect a high AC/DC power supply to the device, do the following:
Electrocution hazard – risk of death, serious personal injury and/or damage to
the device.
Make sure the supplied cover is always installed over high voltage screw-type termi-
nal blocks.
RUGGEDCOM RST2228P
Installation Manual, 12/2019, C79000-G8976-1403-05
DANGER
CAUTION
A circuit breaker rated no higher than 20 A must be installed between the device
and the supply mains.
Whenever possible, use a separate circuit breaker for each power supply.
For maximum redundancy in a dual power supply configuration, use two inde-
pendent power sources.
A socket outlet/disconnect device must be installed near the device and be easily
accessible.
Equipment must be installed according to applicable local wiring codes and
standards.
DANGER
Installing the Device
2.5 Connecting Power
15