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ERA® WCS and e-POI Subracks and Power Supply Unit Installation Guide
M0201ABK_uc
Page 52
© June 2021 CommScope, Inc.
Install the Subracks and PSU in an Equipment Rack
2
Connect the DC Power cable and the Rectifier Control cables that shipped with the PSU shelf assembly.
a
Do the following before connecting the WCS PSU Cable or the Rectifier Control Cable:
•
Confirm that all AC power cables are unplugged from the rear of the PSU.
•
Remove 12 Vdc Rectifier Modules and 57 Vdc Rectifier Modules from the PSU. Do not skip this
step. Residual charge is still available in the Power Modules for a short period after AC input is lost
and connecting the WCS PSU Cable or the Rectifier Control Cable with
any
power in the PSU can
damage the WCS.
b
Plug the DC Power Cable, which is attached to the rear of the PSU, into the WCS Subrack power
connector, and then use a flat-blade screwdriver to tighten the two mounting screws.
c
Slide the Power Connector shell over the Subrack power connector and tighten the two thumbscrews
to attach it to the WCS Subrack.
d
Plug the Rectifier Control Cable (shown to
the right) into the WCS Rectifier Control
connector; press it in until you hear it click
and lock into place.
e
Plug the other end of the Rectifier Control Cable to the matching connector (unlabeled) on the rear of
the PSU.
3
Connect the Ground stud on the WCS, PSU, and e-POI Subracks to a suitable earth ground, per local and
national electrical codes.
4
Reseat the 12 Vdc Rectifier Modules and 57 Vdc Rectifier Modules in the PSU.
5
Plug AC power cables into the power connectors on the rear of the PSU.
To prevent damage to the WCS, tighten the two DC Power Cable mounting screws to ensure that the DC
Power Cable cannot be accidentally dislodged.
WCS PSU Cable
Recfier Control Cable
To prevent SEVERE damage to the WCS Subrack, confirm that all AC power cables
are unplugged from the rear of the PSU BEFORE plugging/unplugging the
WCS Power or Recfier Control cables into/from the WCS subrack.
CAUTION!
Rear Panel of PSU
+57 Vdc Power terminal
- 57 Vdc Power terminal
Recfier Control connector
+12 Vdc Power terminal
- 12 Vdc Power terminal