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OPM_LPS_3UO_30K_40K_0US_V010.doc Operating Manual LP 33 Series 30 & 40 kVA
Code Alarm Meaning
4118
BATTERY
FAULT
During battery test the DC voltage falls under the critical
level.
If the boost voltage has not been reached within 24 hours,
then the charge voltage returns to floating voltage.
Battery test is stopped.
4130
TURN ON RECT.
OR SHUTDOWN UPS
Rectifier and inverter are OFF.
The DC power supply is discharging the battery slowly.
Rectifier must be restarted or battery must be disconnected
in order to avoid damages.
4140
RECTIFIER
CONTROL FAILURE
Rectifier voltage hasn’t reached the set value.
Probably fault on regulation loop.
The DC capacitors are not equally charged (more of 50 VDC
of difference).
The rectifier is switched OFF.
4301
INVERTER
FUSES FAILURE
Inverter output fuses blown.
Signaled by electronic detector.
Inverter can be started manually after replacement of fuses.
4304
K7 CLOSING
FAILURE
K7 not closed despite a closing command being done.
Signaled by auxiliary contact.
Load will be supplied by mains.
4305
K7 OPENING
FAILURE
K7 not open despite an opening command being done.
Signaled by auxiliary contact.
Load will be supplied by mains.
4312
INV. VOLTAGE
OUT OF TOLERANCE
Inverter output voltage is out of the tolerances defined in
respective parameter (±10%).
Inverter is switched OFF.
4320
ISMAX
DETECTION
Detection of inverter bridge (Is) current limitation cause
inverter OFF and automatic restart (message 320).
After 3 times inverter switches OFF for persistent Is max
detection in time.
Inverter switch OFF, and it can be restarted manually.
4340
INVERTER
CONTROL FAILURE
The slave oscillator is not synchronized with the master, thus
causing the shutdown of it’s inverter.
4347
OSCILLATOR
FAILURE
Auto calibration of the Inverters free-run frequency was not
possible.
The oscillator frequency of this unit is out of tolerance.
4402
RECTIFIER
CANNOT BE TURNED ON
The rectifier cannot be turned on because the DC link
voltage has not reached the requested value.
4404
K6 CLOSING
FAILURE
K6 not closed despite a closing command being done.
Signaled by auxiliary contact.
The load cannot be supplied by electronic bypass.
4405
K6 OPENING
FAILURE
K6 not open despite an opening command being done.
Signaled by auxiliary contact.
4410
BYPASS MAINS
OUT OF TOLERANCE
The mains bypass voltage is out of the tolerances (±10%).
K6 opens, synchronization with mains is inhibited and
transfer to mains is blocked.