Installation
February 2012 2-14 P/N 06-237058-001
Follow the procedure below to make PMU Board AC Power and Earth Ground connections:
1. Run AC-input wiring to the right side of the enclosure and bring it through one of the top
knockouts on the right. Refer to Figure 2-11 for AC power connection locations.
2. Connect the other end of the PMU ground wire assembly (installed previously onto the
PMU Board with a standoff) to the Earth Ground stud located at the right side of the
enclosure.
3. Connect the earth-ground (green) wire to the Earth Ground stud located at the right side
of the enclosure.
4. Connect the hot (black) wire to the PMU Board Terminal Block TB1 labeled ‘L’ (Line).
5. Connect the neutral (white) wire to the PMU Board Terminal Block TB1 labeled ‘N’
(Neutral).
6. A Snap-On Suppression Filter, P/N 06-115904-087, has been provided to ensure the
strictest compliance with FCC Part 15. The filter can be found in the NIC Card hardware
kit. For networked control units, open the cylindrical ferrite core filter and place it
around both the hot (black) and neutral (white) AC wires. Snap the filter tightly closed
to secure in place around the wires. Refer to Figure 2-10 below.
7. Locate the AC Voltage Protection Cover found in the hardware kit. Install the cover over
the AC power input terminals and fasten to the 5/8-in. standoff with the provided 8/32”
Phillips mounting screw. Note that the standoff needs to be installed prior to this step.
8. Locate the 5-in. MCB ground wire assembly from the hardware kit.
9. Connect one end of the MCB ground wire assembly to the Earth Ground stud located at
the right side of the enclosure. Leave the other end dangling.
Figure 2-10. Snap-On Suppression Filter Shown Installed Around Black and White AC Power Wires
CAUTION
For proper ground fault detection, all mounting screws should be installed.
Snap-On
Suppression Filter
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