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Chapter 2
Installing the Device
Figure 6: Failsafe Alarm Relay Wiring
1. Normally Open 2. Common 3. Normally Closed
Section 2.4
Grounding the Device
The RS401 chassis ground terminal uses a #6-32 screw. It is recommended to terminate the ground connection
with a #6 ring lug and torque it to 1.7 N·m (15 lbf·in).
Figure 7: Chassis Ground Connection
1. Stainless Steel Stud 2. #6-32 Screw 3. #6 Ring Lug
Section 2.5
Cabling Recommendations
All copper Ethernet ports on RUGGEDCOM products include transient suppression circuitry to protect against
damage from electrical transients and conform with IEC 61850-3 and IEEE 1613 Class 1 standards. This means
that during a transient electrical event, communications errors or interruptions may occur, but recovery is
automatic.
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RUGGEDCOM RS401
Installation Guide
Grounding the Device
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