AXOR Industries
Service Manual
MAGNUM
400
TM
ver.2 rel.05/'15
47
The table below illustrates all the message errors:
3.2 Alarms
alarm
soluTion
al1
eeprom alarm
Error while memorising parameter to the drive's EEP-
ROM or reading parameters from drive's Eeprom.
Disable the drive, try to memorise the param-
eter, then re-enable.
al2
overcurrent alarm
Short circuit between U, V, W or towards earth.
Disconnect the power, verify the wiring, then
power up again.
al3
drive Temperature alarm
Heat sink temperature too high, >70°C.
Disable the drive, verify:
• the forced ventilation functioning,
• the ambient temperature,
wait until the radiator has cooled off, reset the
alarm then enable the drive.
al4
hall alarm
This alarm comes on if one or more of the hall cell's
wires are disconnected.
Disable the drive, verify the cell's wire connec-
tion, reset the alarm, then enable the drive.
al5
encoder alarm
This alarm comes on if one or more of the encoder
channels are interrupted.
Disable the drive, control the connections, reset
the alarm, then enable the drive.
If the alarm persists contact Axor.
al6
i
2
t drive alarm
The internal I
2
t function has reached the maximum
permitted. The cause could be one of the following:
• the working cycle could be too heavy;
• a possible mechanical block;
• motor phase inversion;
• the electronic brake is not unblocked;
• the amplifier's dynamic costants: "KP", "KI" and
"KD", could create useless current oscillation.
It is only a message.
This does not cause the disabling of the drive's
functioning, but it is possible to close the Relè OK
contact during this alarm.
The current is limited to the rated one, set in
"Current" window.
al7
motor Temperature alarm
Heat sink temperature too high.
This causes the opening of the Ok Relè contact and
disables the drive.
Disable the drive:
• control the heat sink temperature;
• decrease the dynamic constant if the mo
-
tor is vibrating. This situation causes current
oscillation and consequently the overheating
of the motor.
Wait until the motor has cooled off, reset the
alarm, then enable the drive.
al8
regenerative resistance alarm
The value I
2
t energy recovery has reached the maxi-
mum allowed.
This causes the opening of the Ok Relè contact and
disables the drive.
Disable the drive:
• check the AC power supply input;
• check that the working cycles are not exces
-
sive;
• verify if the motor, going at half speed, shows
the same problem.
Reset the alarm, then enable the drive.
al9
min/max voltage alarm
Minimum or maximum converter voltage.
See min/max voltage values at "1.3 Technical
Data".
This causes the opening of the Ok Relè contact and
disables the drive.
Disable the drive, wait until the DC power supply
voltage reaches the correct threshold, check the
AC power supply input, then enable the drive.
al10
pre-alarm recovery alarm
80% of the I
2
t energy recovery value has been
reached.
This does not cause the disabling of the drive.
Check the AC power supply input and the work-
ing cycles. This is
only a message
, it anticipates
the intervention of the "Maximum recovery"
alarm.
