4.7 Induction motor operation with induction motor
4-151
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
Determine the moment of inertia.
The moment of inertia is set, so that when the motor accelerates to the
maximum speed, no I component is set in the speed controller.
Note
If there is a significant load moment of inertia in actual operation, this
step should be executed with a coupled load.
For identification runs, the total moment of inertia (P1117 + P1123:8
(from SW 2.4)) is taken into account and corrected in P1117. The
commissioning engineer must make the appropriate distribution
between P1117 and P1123:8 (parameter set independent and
dependent).
!
Danger
The motor is accelerated with a positive field direction of rotation up to
the maximum speed along the torque limit.
The step is executed as follows:
1. Select the step: P1083 = 4
2. Start the step: P1084 = 1
– P1084 = 1 The step was started and is running –
it can be exited with P1084 = 0.
– P1084 = 1/0 The step was successfully completed
– P1084 = –x The step was cancelled with fault–x
(refer to P1084 in Chapter A.1)
Start again after the fault has been removed.
The following parameters are calculated/written into:
P1117
For IM operation (encoderless operation), the following parameters are
available:
Commissioning
step 4
(not required
when carrying–out
self–commissionin
g in the MSD
mode)
Carrying–out
step 4
Changed
parameters
Parameter
overview
04.99
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