The modular (arctic) power-subsystem accepts input DC power in the range from –40 to –72 VDC. Alarms are generated accompanied by a corresponding syslog message if certain thresholds are crossed.
Minor: -44VMajor: -42V
The following example displays a minor alarm message if the "Minor" threshold is crossed:
envmon: %PLATFORM-ENVMON-4-ALARM : MINOR alarm generated by voltage 43442mV since it is less than 44000mV on Power Shelf A - PEM A1-INPUT1 , check battery”
The shutdown thresholds are as listed below:
SW shutdown: -40.75VHW shutdown: -39.5V