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M0201ABK_uc
ERA® WCS and e-POI Subracks and Power Supply Unit Installation Guide
© June 2021 CommScope, Inc.
Page 35
Power Supply Unit Subrack and Rectifier Modules
12 Vdc Rectifier Module
The 12 Vdc Rectifier Module (PN 7663610-xx) supplies power to the WCS and e-POI Subracks. The 12 Vdc
Rectifier Module is fully redundant for ERA.
A second 12 Vdc Rectifier Module is to provide N+1 redundancy. The following graphic and table identify the
12 Vdc Rectifier Module LEDs and connectors.
The 12 Vdc Rectifier Module has an operating temperature range of -10 to +55 °C (+14 to +131 °F).
The PSU Rectifier Modules are hot swappable; you do not need to power down the PSU subrack to add
or remove a module.
Ref # LED
LED Color Description
1
AC
Green
AC input is within the specified range of 85 to 264 Vac.
Off
AC input is not within the specified range.
2
DC
Green
DC output is within the specified range of 12V+/-2% (worst case) over line, load, and
temperature.
Off
DC output is not within the specified range.
3
FLT (Fault) Red
There is no AC input or a failure has been detected in the 12 Vdc Rectifier Module. The Fault
LED activates under the following conditions:
• If two 12 Vdc Rectifier Modules are installed in the PSU, and the AC input is removed (cable
unplugged) from one of the modules.
• If only one 12 Vdc Rectifier Module is installed in the PSU, and AC power is removed. In this
instance the FLT LED is only momentarily red. (The PSU has significant energy storage
capacity and takes several seconds to fully discharge when AC input power is lost, which
allows the FLT LED to remain on for a short period after input power is disconnected.)
For assistance in determining power consumption and heat produced for a specific equipment
configuration contact CMS Global Technical Support as described on
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