Vertiv™ NetSure™ 5100 Series -48 VDC Power System User Manual
Proprietary and Confidential © 2022 Vertiv Group Corp.
11
SM-DU Circuit Card Indicators
The SM-DU is used in a List 60 Hybrid Connection Cabinet. The SM-DU monitors the internal shunts in the cabinet.
There are three (3) status and alarm indicators located on the SM-DU. The functions of these indicators are as shown in Table 3.2.
Refer to Figure 3.5 for location.
Table 3.2
SM-DU Indicators
Indicator
Normal State
Fault State
Fault Cause
Operation
(Green)
On
Off
SM-DU is non-operational.
Flashing
A 1/3Hz flashing indicates the SM-DU is
being identified by the Controller.
A 1Hz flashing indicates a communication
failure.
Alarm
(Yellow)
Off
On
A minor alarm.
Alarm
(Red)
Off
On
A critical or major alarm.
Figure 3.5
SM-DU Circuit Card in a List 60 Hybrid Connection Cabinet