Vertiv NetSure M830B User Manual

Vertiv™ NetSure™ Control Unit (NCU) User Manual
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Table 2.3
Alarm Name Alarm Description Action to Correct
SMDUP1 [2, 3, 4, 5, 6, 7, 8] DC Fuse Alarms (SMDU+ Module must be present in system)
Fuse 1 Alarm DC output fuse #1 is open.
Find out and eliminate the reason the fuse is open
before replacing. Check for overload or short circuit. If
the fuse was manually removed, check with the person
that removed it before reinserting it.
… …
Fuse 25 Alarm DC output fuse #25 is open.
LVD Unit Alarms (Low voltage disconnect must be present in system)
LVD 1 Disconnect LVD1 contactor is in disconnect mode. --
LVD 2 Disconnect LVD2 contactor is in disconnect mode. --
LVD 1 Fail LVD1 contactor has failed.
Check the contactor functions. Replace the contactor.
LVD 2 Fail LVD2 contactor has failed.
LVD3 Unit Alarms
LVD 3 Disconnect LVD3 contactor is in disconnect mode. --
LVD 3 Fail LVD3 contactor has failed. Check the contactor functions. Replace the contactor.
SMDU LVD Alarms (SMDU Module must be present in system)
LVD 1 Disconnect LVD1 contactor is in disconnect mode. --
LVD 2 Disconnect LVD2 contactor is in disconnect mode. --
LVD 1 Contactor Fail LVD1 contactor has failed.
Check the contactor functions. Replace the contactor.
LVD 2 Contactor Fail LVD2 contactor has failed.
Rectifier AC Alarms
Note: Settings for AC Over Voltage 1 and 2 and AC Under Voltage 1 and 2 for each AC1, AC2, and AC3 are set under Mains Failure Alarm Limit 1 and 2.
Example:
Nominal AC Voltage: 220 VAC
Mains Failure Alarm Limit 1: 20%
Mains Failure Alarm Limit 2: 25%
Then,
AC Over Voltage 1 will occur at 220 + (220*0.2) = 264 VAC
AC Over Voltage 2 will occur at 220 + (220*0.25) = 275 VAC
AC Under Voltage 1 will occur at 220 - (220*.2) = 176 VAC
AC Under Voltage 2 will occur at 220 - (220*.25) = 165 VAC
AC1 Over Voltage 1 AC1 voltage is above over voltage 1 threshold.
Check why voltage is high.
AC1 Over Voltage 2 AC1 voltage is above over voltage 2 threshold.
AC1 Under Voltage 1 AC1 voltage is below under voltage 1 threshold.
Check why voltage is low.
AC1 Under Voltage 2 AC1 voltage is below under voltage 2 threshold.
AC2 Over Voltage 1 AC2 voltage is above over voltage 1 threshold.
Check why voltage is high.
AC2 Over Voltage 2 AC2 voltage is above over voltage 2 threshold.
AC2 Under Voltage 1 AC2 voltage is below under voltage 1 threshold.
Check why voltage is low.
AC2 Under Voltage 2 AC2 voltage is below under voltage 2 threshold.
AC3 Over Voltage 1 AC3 voltage is above over voltage 1 threshold.
Check why voltage is high.
AC3 Over Voltage 2 AC3 voltage is above over voltage 2 threshold.
AC3 Under Voltage 1 AC3 voltage is below under voltage 1 threshold.
Check why voltage is low.
AC3 Under Voltage 2 AC3 voltage is below under voltage 2 threshold.
Mains Failure Commercial AC power failure. Check why no commercial AC power.
IB2-1 (Interface Board) Alarms (IB2-1 must be present in system)
Communication Fail IB2-1 board has lost communications with the controller. Check communications cables.

Vertiv NetSure M830B Specifications

General

Brand	Vertiv
Model	NetSure M830B
Category	Controller
Language	English