Power and ground connections, Ground connection, Power and ground connections -2 – ADC Network Unit User Manual
Page 14: Ground connection -2, Figure 2-1. inserting eniu into mounting bracket, Power and ground, Figure 2-1
2-2
P
OWER
AND
G
ROUND
C
ONNECTIONS
Power and ground connections are located on the back of the ENIU.
Ground Connection
To assure proper operation, the ground stud located on the back of the ENIU (see
) should
be connected to a good earth ground. There must be no switching or disconnecting devices in the grounding circuit
conductor between the ENIU and the point of connection to the grounding electrode conductor.
This procedure establishes a connection between the ENIU and a ground connection. A frame ground termination
(#8 screw) is provided on the back of the ENIU for a frame ground connection. This connection must be made in
accordance with all local and national electrical codes. The ENIU should be connected directly to a grounding
electrode conductor or to a bonding jumper from a grounded electric box.
6
Connect the power supply to the DC IN connector located on the back of the ENIU.
– If using AC power, connect power supply to the AC source (110 – 240 VAC, 50 – 60 Hz).
– If using DC power, connect power following local practices. (See
.) See
for fuse size.
7
Verify that the STATUS LED is lit.
Figure 2-1. Inserting ENIU into Mounting Bracket
DANGER
To avoid the possibility of severe and potentially fatal electric shock, use extreme care when
working with the power terminations at the back of the ENIU.
WARNING
Before making any connections to a ENIU, verify that the power is off (unplugged or fuse
removed at the fuse and alarm panel).
Step
Action
20384-A1
ENI-EG
XXEGX
X1B