Lab.gruppen PLM 20K44, Operation Manual

Page: 69 / 92

9. Appendix
PLM+ SERIES Operation Manual rev 3.0.1
69
Category/Type Name On screen text Description Action
PSU
Warning
Under Voltage Limit UVL ACTIVE
The Under Voltage limiter is active as the
mains supply is approaching the lower
end of the device´s operational voltage.
Output power is decreased to ensure
mains distribution does not collapse
Increase mains distribution
stiffness or reduce output
power to avoid limiting
Warning
Power Average Limit PAL ACTIVE to average power or mains current
draw is above safe operating levels
Reduce output power
to avoid limiting
Warning
Breaker Emulation Limit BEL ACTIVE
Power supply is reducing mains current
Improve mains distribution
and update BEL
output power to avoid
limiting
Warning
Mains supply glitch MAINS GLITCH
Mains glitch (missing cycles) was
detected on the mains inlet
Check mains distribution/
connection
Fault
Need service NEED SERVICE:1-8 Power supply internal error
Restart device; if not
cleared it needs service
Fault
Mains voltage above
400 volt peak
MAINS>400 VPK
Power supply detects mains voltage
above 400 volt peak. Protective shut
down, auto restart attempt
Check mains distribution/
connection
Fault
Mains voltage above
270 V
MAINS>270 V
Power supply detects mains voltage
above operation voltage. Protective
shut down, auto restart attempt
Check mains distribution/
connection
Fault
Mains voltage below
65 V
Mains<65 V
Power supply detects mains voltage
below operation voltage. Protective
shut down, auto restart attempt
Check mains distribution/
connection
Fault
Power supply fault PSU FAULT Internal power supply fault
Check mains distribution/
connection. Restart
device; if not cleared
it needs service
Fault
Check mains CHECK MAINS
Power supply detects unstable mains
supply. Protective shut down, auto
restart attempt
Check mains distribution/
connection
Fault
Power supply power protect PSU POWER PROT
Too high output power for too low mains
supply voltage. Protective shut down,
auto restart attempt
Improve mains supply
voltage or reduce
output power
LOAD
Warning
Speaker short SPKR SHORT Both LoadPilot tones below thresholds Check load or calibration
Warning
Speaker damaged SPKR DAMAGED
One LoadPilot tone is above
or below threshold
Check load or calibration
Warning
Under speaker count UNDER SPKR CNT
Both LoadPilot tones above thresholds
or LoadSmart detected fewer
speakers than expected
Check load and
cabling alibration