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.
The –48 V DC PDM or PSM will have –48V written on the faceplate.
Table 1: DC Power Distribution Module LEDs
RTN and –48V input feeds are connected. PDM is functioning normally.
RTN input feed is not connected or present.
–48V input feed is not connected or present.
RTN and –48V input feeds are not connected.
RTN or –48V input feeds may be reversed, feed live.