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SIG9280E two-way power supply connection

Publication Date:  2019-07-19 Views:  125 Downloads:  0

Issue Description

Some site equipment room for the DC power supply, customers to purchase SIG9280E, and in urgent need of on-line, you need a 4-channel DC power supply, but the the room supply lines can only provide two DC lines.

Alarm Information


Handling Process

Adjust power supply module accepted powered, the two-way power supply are respectively connected to the power supply module 1,4 (or 2,3), and all the slots of shelf is normally powered.

Root Cause

The device is powered on, only the right side of the seven slots on the normal electric start, seven slots on the left unpowered.

SIG9280E is 4-way power supply, power supply 2 +2 mutual standby, including:

1,3 of power supply module for a group of power, mutual standby,c the left side 7 slots of device (for the main control board).

2,4 of power supply module for a group of power, mutual standby,  it supply the power for the right side 7 slots of the device (for the main control board) .
By examining the two-way power supply, that is connected to the power supply module 2,4, which led the left side slot is not powered.


The two-way power supply recommendations are as follows:

When the board is less, such as a control board, a business board case, it can the business board plugged into the left side of the main control board, use two-way power to supply power for 1,3-power module, to achieve power 1 +1 backup; (even if supply additional power for 2 or 4 module, it can not play a backup role)

When the board is much,  supply of 1,4 or 2,3 can normally start the machine frame and all the slots, power backup can not be achieved at this time.