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MX2020 DC Power Distribution Module (-48 V) LEDs

 

Each DC PDM faceplate contains one bicolor LED for each of the seven or nine input power feeds (–48 V), indicating the correct or incorrect polarity connection of each feed. SeeTable 1. Figure 1 shows the –48 V DC PDM LEDs.

Note

The –48 V DC PDM or PSM will have –48V written on the faceplate.

Figure 1: DC Power Distribution Module LEDs
DC Power Distribution Module LEDs

Table 1: DC Power Distribution Module LEDs

Label

Color

State

Description

–48V=80A

Green

On

RTN and –48V input feeds are connected. PDM is functioning normally.

Off

RTN input feed is not connected or present.

–48V input feed is not connected or present.

RTN and –48V input feeds are not connected.

Red

On

RTN or –48V input feeds may be reversed, feed live.