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2.
2.5
Connecting Power
The RUGGEDCOM RS920L supports power input from a single high AC/DC or low DC
power supply.
IMPORTANT
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RUGGEDCOM RS920L
Installation Manual, 02/2020, C79000-G8976-1032-06
Connect a failsafe device to the terminal block.
1
2
3
Normally Closed
1
Common
2
Normally Open
3
Figure 2.4
Failsafe Alarm Relay Wiring
For 110/230 VAC rated equipment, an appropriately rated AC circuit breaker
must be installed.
For 125/250 VDC rated equipment, an appropriately rated DC circuit breaker
must be installed.
Use minimum #16 gage copper wiring when connecting terminal blocks.
Equipment must be installed according to applicable local wiring codes and
standards.
All line-to-ground transient energy is shunted to the Surge Ground terminal. In
cases where users require the inputs to be isolated from ground, remove the
ground braid between Surge and Chassis Ground. Note that all line-to-ground
transient protection circuitry will be disabled.
Installing the Device
2.5 Connecting Power
11
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