4
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4.7
Induction motor operation with induction motor
4-150
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
Determine the speed at the start of field weakening.
When traveling at the threshold speed for the start of field weakening and
a DC link voltage V
DC link
, the converter output voltage is set to 380 V.
If V
DC link
< 600 V, the converter output voltage is reduced by the factor
V
DC link
/ 600 V.
!
Danger
The motor is accelerated up to the speed at the start of field
weakening with a positive rotating field; the speed is limited to the
currently effective limit.
Note
If the speed actual value is not steady (resolver, toothed–wheel
encoder), it cannot be guaranteed that this commissioning step is
correctly executed (the setting takes too long).
Remedy: Set the speed actual value smoothing (P1522) to min. 1 ms.
The step is executed as follows:
1. Select the step:
P1083 = 3
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:
P1142
Commissioning
step 3
Carrying–out
step 3
Changed
parameters
4 Commissioning
04.99