APC VS 50 User Manual

Magnum VS –48 Vdc User’s Manual 

                                     

  Page 44 

Rectifier Fault Alarm (RFA) 
Status 
{Status Only} 
[Power Modules/Rectifiers] 

The status will be on if the rectifier output 
has failed.   

Status Only 

Rectifier RFA Alarm  
[Power Modules/Rectifiers] 

Defines the output relay that is energized 
or special rectifier alarm group n of N that 
occurs when a rectifier output has failed. 

Ignore, Minor, Major 
Output Relay 1-6

, 

n of N 

Rectifier Standby Alarm 
[Power Modules/Rectifiers] 

Defines the output relay that is that is 
energized or special rectifier alarm group 
n of N that occurs when the controller is 
holding a rectifier in the standby mode. 

Ignore, Minor, Major 
Output Relay 1-6, n of N 

Rectifier Standby Alarm Status 
{Status Only} 
[Power Modules/Rectifiers] 

The status will be “ON” if the controller is 
holding the rectifier in the standby mode.  

This feature is supported 
by the standard SNMP 
card monitor, but is not 
supported by this dc 
system. 

Remote Configurable 
[System/DC Parameters] 

This allows settings to be made using the 
SNMP interface card.  Disabling this 
feature allows changes to be made 
through the local interface only.  Status 
and parameters are still displayed. 

Enabled, Disabled 

Store Configuration  
[Power Modules/Rectifiers] 

This feature is supported by the standard 
SNMP card monitor, but is not supported 
by this dc system. 

Enable, Disable 

System Current 
{Status Only} 
[System/DC Parameters] 

The total system output current 
(calculated as the sum of the individual 
rectifier output currents). 

Status Only 

System Temperature 
{Status Only} 
[System/DC Parameters] 

System temperature measured within the 
controller. 

Status Only 

System Voltage 
{Status Only} 
[System/DC Parameters] 

Voltage readout measured by the 
controller at the output of the rectifiers.  
This voltage is based on calculations 
performed by the controller based on the 
Battery Float,  Battery Temperature 
Compensation and Battery Maximum 
Recharge parameter settings. 

Status Only 

Temperature Display Units 
[System/Preferences] 

Enables selection of Fahrenheit or 
Celsius temperature scale (Fahrenheit 
“OFF” displays readings in °C). 

Fahrenheit, Celsius 

Time  
[System/Date & Time] 

Network management card Internal 
system clock time (24-hour format).  
Used as a time stamp in the web card 
event log. 

Current Time 

  

In order to prevent damage to the battery due to deep discharge, the dc power system has a 
Low Voltage Disconnect (LVD).  When the battery voltage reaches the threshold set by the LVD 
1 Trip Voltage setting during discharge, the dc power system will activate the

 

LVD contactor to 

disconnect the battery from the system.   The LVD will remain open until ac power is restored to