Operating instructions

45
11 Reference Table for the Display and
UPS Operating Problems
11.1 Normal operation
LED indications Warning signal LC displays Notes Operating
status /
Operating
problems
Normal (Normal) Battery (On Battery) Bypass (Fault) Fault (Fault)
Mains in
tolerance
range
None
Mains not in
tolerance, i.e.
batt. operation
1 acoustic signal
every 4s
"utility power
is abnormal"
11.2 Battery Operation
Battery voltage
in tolerance
range
1 acoustic signal
every 4s
"utility power
is abnormal"
Battery voltage
not in tolerance
range
1 acoustic signal
every 2s
"battery voltage
is too low"
Check battery
system; poss.
Reduce load
11.3 Bypass Operation
LED indications Warning signal LC displays Notes Operating
status /
Operating
problems
Normal (Normal) Battery (On Battery) Bypass (Fault) Fault (Fault)
Mains in
tolerance
range;
bypass mode
1 acoustic
signal every
2 min.
Alarm stops
when UPS
returns to
normal mode
Mains not in
tolerance
range;
bypass mode
1 acoustic
signal every 4 s
"utility power
is abnormal"
USV
output
voltage is
switched off