Vertiv NetSure SCC, User Manual

Page: 9 / 36

Vertiv
| NetSure™ SCC Controller User Manual (UM1M520HNA) | Rev. H
9
INTRODUCTION
Overview
The SCC (System Control Card) controller is accessed via SNMP/V2.
The SCC Controller performs the following functions.
•
SNMP/V2 communication to an RMS (Rack Management System). This communication interface can
be used to monitor, configure, and control rectifiers and BBU’s (Battery Backup Unit).
•
Rectifier Module and BBU Module Control
•
Imminent Power Failure Notification
•
EPO (Emergency Power Off)
•
Current Limit Management of Rectifiers
•
Rectifier Intelligent Power Matching (Energy Optimization Mode)
•
Rectifier and BBU Module Data Monitoring
•
Alarm Detection and Reporting
Function Descriptions
SNMP Communication to an RMS, including Rectifier and BBU Module Configuration via SNMP/V2
See “SCC Controller Interaction with the RMS” on page 12.
Rectifier Module and BBU Module Control
Rectifier and BBU modules are automatically controlled by the SCC Controller.
Imminent Power Failure Notification
The imminent power fail signal triggers >1 ms before the DC bus collapses. It triggers when the combination of
rectifiers and batteries on the bus can no longer support the load.
•
Rectifiers cannot provide enough power for the load.
•
Batteries cannot make up the difference.
This signal identifies the loss of the output DC bus prior to the loss of regulation in these situations:
•
The AC main stops providing power and battery backup is not available.
•
The AC main stops providing power; the batteries provided backup power but the batteries are nearly
discharged.
•
All rectifiers are needed to support the DC bus and one rectifier fails, and battery backup is not available.
EPO (Emergency Power Off)
Systems utilizing the Emergency Power Off (EPO) feature will have provisions to connect a customer provided
EPO switch. The EPO switch is normally open, when closed a signal is sent to shut down the rectifier and BBU
modules. Switch closure causes the SCC Controller to send an SNMP trap, wait two (2) seconds, and then send
a message to shut down the rectifiers and BBU’s.