Arris CHP Max5000, Equipment Manual

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3-12 CHP Max™ Headend Optics Platform Chassis, Controllers and Power Supplies Rev D
FET circuit is to route power from the Power Supply modules with the highest voltage to the
chassis backplane. Two installed Power Supply modules will share the chassis load within
10% of each other.
Module Installation
After installing all of the chassis in your CHP system, you need to install modules into each
of the chassis. This section provides a brief description of module installation. A detailed
description of installing and configuring a module is provided in the chapter corresponding
to that module.
Installing a Power Supply Module
Only one Power Supply module is required to operate a fully loaded chassis. Installing an
additional Power Supply module improves reliability by providing load sharing and
redundancy.
➤
To install the Power Supply module
1. If the CMM or SMM module is installed, press upward on the latch release on the
front panel and slide the module out the front of the chassis.
2. Position the Power Supply module with the multi-pin DC/Communication connector
toward the bottom.
3. Slide the rear (side with power and multi-pin connectors) of the Power Supply
module(s) into the chassis. Retaining tabs snap into place to secure the module.
4. Connect the appropriate AC power cord based on installation site to the IEC 320 AC
power cord connector on the rear of the Power Supply module. Refer to Table 3.1
on page 3-2 for the appropriate power cord.
CAUTION Some module pins are sensitive to ESD! Use a grounding strap to prevent
damage to the module by ESD.
Note Do not install an AC Power Supply module (P/N CHP-PS/AC1 or CHP-PS/AC1-Q)
in a chassis that contains a DC Power Supply module (P/N CHP-PS/DC1 or
CHP-PS/DC1-Q). The 3.3V
DC
outputs will not current share and false alarms may be
generated.
Note Modules can be installed and removed with the chassis powered
(hot-swapped).
Note The Power Supply module(s) must be installed before the CMM or SMM
module is installed.
Note While a single power supply will operate in either the upper or lower bay, the
craft terminal identifies the upper bay as slot 11 and the lower as slot 12.
Note The CHP-PS/AC1 or CHP-PS/AC1-Q AC input power supply includes a power
cord for 115V
AC
United States installations.