Arris CHP Max5000, Equipment Manual

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Rev D CHP Max5000 Chassis (Rear Fiber Version) 2-13
Configuring the CHP Chassis
Thermal Limits for Chassis Loading
The specified ambient operating temperature range for each module is listed in the
specifications area at the end of each section throughout this manual. The required
operating temperature range for all modules is from 0 to 50°C (32 to 122°F).
The cooling fans will maintain the operating temperature of all components below maximum
limits in a fully loaded chassis as long as the following conditions are maintained:
■
There is sufficient clearance in front of and behind the chassis for air circulation.
■
The front and back panels of a chassis are not blocked.
Power Supply and Chassis Considerations
The CHP chassis requires at least one Power Supply module. An additional redundant
load-sharing Power Supply may be installed for improved reliability. All outputs of the Power
Supply module(s) are connected using internal diodes or steering Field Effect Transistors
(FETs) with another Power Supply module. The function of the diodes or steering 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.
Table 2.6 Power Supply and Chassis Configurations
Chassis Being Used Compatible Power Supply
CHP-CHASSIS-19,
CHP-CHASSIS-19Q,
CHP-CHASSIS-19Q-B
Accepts CHP-PS/AC1, CHP-PS/AC1-Q, CHP-PS/DC1, and CHP-PS/DC1-Q. Cannot
use these AC and DC power supplies in the same chassis.
CHP-CHASSIS-19S,
CHP-CHASSIS-19S-B,
CHP-CHASSIS-19U
Accepts CHP-PS/AC1-SW, CHP-PS/AC1, CHP-PS/AC1-Q, CHP-PS/DC1-SW,
CHP-PS/DC1, and CHP-PS/DC1-Q. Cannot use these AC and DC power supplies in
the same chassis.