71
ADVANCED PARAMETER-SETTING MODE
Commissioning manual Powerdrive MD2/FX
4617 en - 2017.09 / e
05.12
: Autotune
Adjustment range No (0), Stationary: motor data completed
(1), Rotating: motor data incomplete (2),
Encoder offset measure/rotor parking (3),
Encoder offset measure/signal injection
(4)
Factory setting : None (0)
Format: 8 bits
• During the autotune phase, brake control is disabled.
• Measurements taken when
05.12
= Rotating
(2) must be performed with the motor uncoupled
since the drive drives the motor at 2/3 of its rated speed.
This «rotating» autotune is necessary only in closed loop
operating mode
. Make sure that this operation does
not present any safety risks, and that the motor is
stopped before the autotune procedure.
• After modifying motor parameters, repeat
autotuning.
None (0):
No autotune performed.
At the end of the autotune procedure,
05.12
reverts to «None».
Stationary: motor data completed (1):
- If
11.31
= «Induction motor in open loop mode» or «Induction
motor in vector control mode»: The stator resistance and the
voltage offset are stored in
05.17
and
05.23
. The gain
04.13
is automatically updated.
- If
11.31
= «PM motor (Servo) in vector control mode»: The
stator resistance and the voltage offset are stored in
05.17
and
05.23
respectively.
The stator inductance is measured but not stored. An alarm is
generated if its value is very different from the value entered in
05.24
. The gain
04.13
is automatically updated.
Procedure:
- Ensure that the motor parameters have been configured and
that the motor is stopped.
- Enable the drive.
- Give a run command.
Wait until the procedure ends.
- Disable the drive and remove the run command.
The motor is then ready to operate normally.
Parameter
05.12
reverts to «None» as soon as autotuning is
complete.
Rotating: motor data incompleted (2):
CAUTION:
In this mode, the motor runs at 2/3 of its rated speed or at
1000 rpm maximum.
- If
11.31
= «Induction motor in open loop mode»: No action.
- If
11.31
= «Induction motor in vector control mode»: The
stator resistance and the voltage offset are stored in
05.17
and
05.23
respectively. Inductances
05.24
and
05.25
(or
21.14
and
21.24
) are also measured and stored. The power
factor
05.10
and the gain
04.13
are automatically updated.
- If
11.31
= «PM motor (Servo) in vector control mode»: The
stator resistance and the voltage offset are stored in
05.17
and
05.23
respectively. The inductance
05.24
(or
21.14
)
and the no-load EMF
05.33
(
21.30
) are measured and
stored. An alarm is generated if their values are very different
from the values entered in
05.24
(or
21.14
) and
05.33
(or
21.30
). The gain
04.13
is automatically updated.
Procedure:
- Ensure that the known motor parameters have been
configured and that the motor is stopped.
- Enable the drive.
- If the drive is undersized in relation to the motor power, reduce
the current limit
04.07
in order to avoid causing the drive to trip
- Give a run command. The motor is driven, then performs a
freewheel stop when autotuning is complete.
- Wait until the procedure ends.
- Disable the drive and remove the run command.
The motor is then ready to operate normally.
Parameter
05.12
reverts to «None» as soon as autotuning is
complete.
Encoder offset measure/rotor parking (3):
This mode is only active if
03.38
is set to «U, V, W only»,
«Incremental UVW», «Hall effect sensor» or «Resolver». In
this mode, the motor runs at very low speed so that the encoder
offset can be measured. This offset is automatically stored in
03.25
.
Encoder offset measure/signal injection (4)
:
This mode is only active if
03.38
is set to «U, V, W only»,
«Incremental UVW», «Hall effect sensor» or «Resolver».
This mode can only be used on permanent magnet machines
with high cogging [Lq > 120% of Ld].
A current signal with high frequency and low amplitude is
injected into the motor stator. The encoder offset is determined
by measuring the motor stator inductance in multiple directions.
CAUTION:
If a stop command is given before the end of the autotune
phase, an «Autotune» trip is generated.
Summary of Contents for LEROY-SOMER Powerdrive FX
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Page 174: ...174 MAINTENANCE Commissioning manual Powerdrive MD2 FX 4617 en 2017 09 e Notes...
Page 175: ...175 MAINTENANCE Commissioning manual Powerdrive MD2 FX 4617 en 2017 09 e Notes...
