MGE UPS Systems EPS 7000 User Manual
Page 38
Operation
EPS 7000 Shared Systems
page 2 —10
UPS INPUT PROBLEM
CHECK FREQUENCY !
This message indicates that the main AC input (mains 1) frequency is out of tolerance. The rectifier/battery charger
has shut down and the inverter is operating from its battery source.
UPS INPUT PROBLEM
CHECK VOLTAGE !
This message indicates that the main AC input (mains 1) voltage is out of tolerance. the rectifier/battery charger
has shut down and the inverter is operating from its battery source.
CHARGER SHUTDOWN
COMMAND ON !
This message indicates that the rectifier/battery charger has been instructed to shut down, for example during
progressive (stepped) transfer to a motor-generator set.
INPUT KVA LIMITED
COMMAND ON !
This message indicates that the rectifier/battery charger has been instructed to limit the power drawn from the main
AC input (mains 1) source. This condition occurs, for example, when the load is being supplied by an undersized
motor-generator set; the UPS battery source is called upon to make up the difference.
BATTERY CURRENT
LIMIT COMMAND ON !
This message indicates that the rectifier/battery charger has been instructed to limit the charge current to the
battery. Normal charge current to the battery will be supplied when the command is released. This condition occurs,
for example, when the load is being supplied by an undersized motor-generator set.
QF1 BATTERY BREAKER
OPEN !
This message indicates that the battery circuit breaker QF1 has been opened or has tripped. the load is no longer
protected, since battery power is unavailable.
LOW BATTERY
. . . !
This message indicates that the inverter has shut down, due to depletion of the battery’s stored energy.
CHARGER OFF
. . . !
This message indicates that the rectifier/battery charger has shut down.