Installing the Device
2.5 Connecting Power
2. Connect a failsafe device to the terminal block.
5
1
4
4
5
3
2
3
1
Pluggable Terminal Block
2
Screw-Type Terminal Block
3
Normally Open Terminal
4
Common Terminal
5
Normally Closed Terminal
Figure 2.5
Failsafe Alarm Relay Wiring
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
terminal 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, reliable connections under severe shock or vibration.
DANGER
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.
CAUTION
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.
RUGGEDCOM RST2228P
Installation Manual, 07/2021, C79000-G8976-1403-13
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