
PMP Synchronization Solutions User Guide
Installing a CMM4
PMP-0297 007v001 (January, 2017)
3-53
Installing the power supply for the CMM4 (30 VDC or 54 VDC)
WARNING!
Although the output of the power supply is 30 VDC or 54 VDC, the
power rating classifies the converter as a Class 2 electric device. For this
reason, whenever you work on power in the CMM4, you must
first
disconnect the DC supply from the AC power source.
Procedure 10 Installing the CMM power supply
1
Install the CMM4 power supply in a hut, wiring closet, or weatherized NEMA-
approved enclosure. It is designed for extreme temperatures but it is imperative to
keep moisture away from the power converter.
2
Do not install the power supply within the CMM4 enclosure. The CMM4 enclosure is
not large enough to provide surface area for heat dissipation without the use of
forced convection fans, not to provide space for additional high-power electronics.
3
For the DC side of a 54 VDC power supply, engineer the DC cable, selecting the wire
gauge from
Use either UV-resistant cable or shield the cable (as in a
conduit) from UV rays.
4
Remove the clear plastic cover,
then connect the DC cable as
shown right. Insert the +V lead
into the screw terminal clamp
labeled “+V” and insert the GND
(ground/return) lead into the
screw terminal clamp labeled “-
V”. To insert a lead into a screw
terminal clamp, first loosen the
retaining screw, insert the wire
into the terminal, then tighten the
retaining screw. Once the cables
are secure, reinstall the clear
plastic cover.
Figure 53 Power supply DC
connection