The Environmental Status View
3-11
MMAC-Plus Management Views
Redund
Two or more power supplies are installed in the MMAC-Plus
Available
chassis. The system is using load sharing, in which each installed
power supply provides equal power (±5%) to the system. The
MMAC-Plus chassis also has a redundant source of power, since if
one power supply fails, the other installed supplies assume the load
(assuming that the total power draw on all power supplies prior to
failure did not exceed 100% capacity of the remaining supplies).
Main Power Bus
This Þeld displays the current voltage for the Main 48 volt DC System Power Bus.
This is a color-coded Þeld. If voltage to the Main Power Bus is within acceptable
limits (from 40 volts to 59 volts), the Þeld will be green; if it is outside this range,
the Þeld will be red.
Diag Power Bus
This Þeld displays the current voltage for the 12 volt internal line. This is a color-
coded Þeld. If voltage to the internal line within acceptable limits (from 11 volts to
13 volts), the Þeld will be green; if it is outside this range, the Þeld will be red.
INB Termination
This Þeld displays the current voltage for the INB Termination Power Bus. This is
a color-coded Þeld. If voltage to the INB Termination Power Bus is within
acceptable limits (from 3.1 volts to 5.0 volts), the Þeld will be green; if it is outside
this range, the Þeld will be red.
UPS/Battery
The UPS/Battery Þeld indicates the condition of any Battery Backup Units
installed in the MMAC-Plus chassis.
Status
If a BBU is installed in the MMAC-Plus, this will indicate its
operational status (Charging, Standby (fully charged and ready to
supply back-up power), or Discharging (currently in use)).
If no BBU is installed, this Þeld will remain blank.
Run Time
If the system is running on a standard power source, this indicates
the estimated amount of run time stored up in any installed BBUs.
If the system is currently using a BBU, this Þeld indicates the amount
of power back-up time remaining in the BBU (assuming the current
power load).
If no BBU is installed, this Þeld will remain blank.
Client Modules
The client module display indicates the amount of draw on an Intelligent Power
Supply by each module, as well as their internal temperature.
