English
88 AGy -L
10.3 List of drive alarm events
Table 10.3.1 provides a description of the causes for all the possible alarms.
Cod. Name
EF EF Ext Fault
It trips when External fault input is active 1
YES
0
OC OC OverCurrent
It trips when an Overcurrent value is detected by output current sensor 2
YES
1
OU OV OverVoltage
It trips when the drive DC Bus voltage is higher than the maximun threshold for
the given main voltage setting
3
YES
2
UU UV UnderVoltage
It trips when the drive DC Bus voltage is lower than the maximun threshold for
the given main voltage setting
4
YES
3
OH OH OverTemperat
It trips when the drive heatsink temperature detected by the switch sensor
exceeds its threshold (*)
5
NO
4
OLi OLi Drive OL
It trips when the drive overload accumulator exceeded the trip threshold 6
NO
5
OLM OLM Motor OL
It trips when the motor overload accumulator exceeded the trip threshold 7
NO
6
OLr OLr Brake res OL
Its intervention occurs when the overload cycle of the external braking
resistance does not correspond to the defined limits.
8
NO
7
Ot Ot Inst OverTrq
It trips when the torque delivered by the motor exceeds the programmed level
for the preset time
9
NO
8
PH PH Phase loss
It trips when the supply phase lack: enabled 30 seconds after one of the supply
phases has been disconnected
10
NO
9
FU FU Fuse Blown
It trips when the drive input fuses are blown 11
NO
10
OCH OCH Desat Alarm
IGBT desaturation or instantaneous overcurrent have been detected 12
YES
11
St St Serial TO
It trips when the serial link time out exceeds the programmed level (I.604
parameter)
13
YES
12
OP1 OP1 Opt 1 Alm
Communication failure between drive regulation board and option 1 expansion
board
14
NO
13
OP2 OP2 Opt 2 Alm
Communication failure between drive regulation board and option 2 expansion
board
15
NO
14
bF bF Bus Fault
Drive comunication Bus failure 16
NO
15
OHS OHS OverTemperat
It trips when the drive heatsink temperature exceeds a safety level. (*) 17
NO
16
SHC SHC Short Circ
Short Circuit between output phases or Ground fault 18
NO
17
Ohr
Reserved 19 18
Lf LF Limiter fault
It trips when the output current limiter or the DC-Link voltage limiter fail. The
failure can be caused by wrong settings of regulator gains or by the motor load.
20
NO
19
PLC PLC Plc fault
PLC program not active. Lift application does not function.
Run C.050 parameter to reset the alarm.
21
NO
20
EMS Key Em Stp fault
Reserved 22
NO
21
UHS UHS Under Temperat
It trips when the temperature of the drive heatsink is below a safety level
(typically –5°C).
23
NO
22
ENC Encoder fault
It trips in case of a power loss on the cable connecting the encoder to the
drive.
24
NO
23
PHO Phase Loss Output
See figure 7.2: it trips during the phase (2) if the current does not exceed the
limit defined in parameter A.087.
25
NO
24
Bit H.062
H.063
ALARM
DESCRIPTION
AUTORESET
Numerical
code from
serial
*) OH switch sensor threshold and OHS analog sensor threshold depend on the drive size (75 °C ... 85 °C)
Table 10.3.1 Alarm event list
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