MGE UPS Systems EPS 7000 User Manual
Page 36
Operation
EPS 7000 Shared Systems
page 2 —8
2.8 LCD Messages
This section presents the most common alarm messages that appear on the LCD (the alphanumeric section of the
“hidden” panel), and explains their meaning.
LOAD IS PROTECTED
UPS IS ON LINE
This is the normal display message. There are no alarms or problems, and the load is being supplied by the UPS
inverter.
2.8.1
General alarms
LOW LEVEL ALARM
UPS OK !
This message indicates that a problem requiring action has occurred. The load is still supplied by the
inverter. The problem is listed in the secondary alarm message (see below), as indicated by the flashing
exclamation mark (!). The alarm message may be viewed by pressing the “alarm” pushbutton (!)
UPS INPUT FAILURE
LOAD ON BATTERY !
This message indicates that the main AC input (mains 1) has failed or is outside of tolerance, and power to the
inverter is being supplied from the UPS battery system. The load is still supplied via the inverter.
REMAINING BAT. TIME
__ MN %KW LOAD = __
This message is automatically displayed every five seconds when the UPS is on battery. It alternates with the
previous message. The message provides an estimate of the available remaining time on battery, based on the
percentage of full rated load being supplied, the type of battery, the battery temperature, and the battery age.
UPS LOW BATTERY
SHUTDOWN IMMINENT !
This message indicates that the batteries have reached the “low battery shutdown” warning level. The user must
take steps to prepare the load for shutdown (load shedding, file saving and computer shutdown, etc.). This
message replaces the previous two messages when the batteries are nearly depleted. When this message
appears, there are only a few minutes of battery back-up time remaining.
UPS ALARM
CALL SERVICE !
This indicates that the battery disconnect circuit breaker QF1 has been open or the inverter has stopped and that
service is required. The problem is listed in the secondary alarm message (see below), as indicated by the flashing
exclamation mark (!). The secondary alarm message may be viewed by pressing the “alarm” pushbutton (!).