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H831PDMA

Part #:

Module #: H831PDMA

Price: US$ 0

Availability: In Stock

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H831PDMA

H831PDMA is a DC power board that passes through and converts the combined single -48 V DC power. It then outputs -48 V DC and +12 V DC power to the backplane. Through the backplane, it passes through power to the service boards, centralized vectoring processing board, control board, and fan monitoring board.

Functions and Specifications

  • DC power supply (The board supports one -48 V DC input and a total output power of 550 W.)

  • Protection against overtemperature, output overcurrent, output short circuit, and output overvoltage

  • Input power availability detection and alarming

  • FAN power supply detection and alarming

Working Principle

Figure 1 illustrates the working principle of the H831PDMA board.

Figure 1 Working principle of the H831PDMA board

The basic working principle of the H831PDMA board is as follows:

  • The protection and filter circuit protects the -48 V DC power input against surges and lightning strikes and also limits current and filters electromagnetic interference (EMI) for the -48 V DC power input.

  • The EMC filter circuit performs filtering for circuits.

  • The soft-start circuit provides the soft-start function for the -48 V DC power input of the +12 V DC power module.

  • The output filter circuit filters the output of the +12 V DC power module.

  • The detection and alarming circuit detects the availability of the -48 V DC power and reports the related alarm.

  • The fan power supply alarm circuit detects whether the power supply to the fan is normal.

  • The e-label and board type reporting circuit stores the board manufacture information and reports the board type.

Ports on the Front Panel



Indicator

Silk Screen

Name

Color

Status

Meaning

PWR

Operating status indicator

Green

On

The DC input is normal.

Green

Off or Blinking

There is no DC input or the circuit is faulty.

VOUT

Output status indicator

Green

On

The output of the DC module is normal.

Green

Off or Blinking

The output of the DC module is abnormal.