Lenze 931E/K Small Drives Control - Manual (Page 137)

Appendix
Parameterisation of outside motors
Angle encoder
10
l
137 SW−HB 13.0002−EN 4.1
The following message will appear, if the motor identification has been successful:
931e_284
The following message will appear, if an error has occurred:
931e_286
)
Note!
If an automatic determination is not possible, the angle encoder data must be
entered manually.
This problem may occur if:
ƒ the motor has not been properly connected
ƒ "special motors" with very high pole pair numbers are used
ƒ the motor shaft cannot be freely moved
ƒ the mass inertia of the motor is very high and the motor does not reach the
set position within the integration time
ƒ the DC−bus voltage is fallen below
The manual determination of the angle encoder data requires a profound knowledge of
synchronous machines and the encoder used. For this reason, we recommend to contact
your Lenze representative in this case.
}
Danger!
Faulty angle encoder data may lead to uncontrolled motions of the drive
which may cause material damage at the motor or the entire system.
In addition to the angle encoder settings, you can select basic control settings in this menu:
ƒ Commutation: Block or sine commutation.
ƒ Speed controller feedback: Encoder or motor e.m.f. (separately for P−component and
I−component).
The feedback selection via the motor e.m.f. may have a positive effect on the smooth
running of the motor when encoders with a poor resolution or low accuracy are used.
When high−resolution resolvers or sin/cos encoders are used, we recommend not to use