Lenze L-force HighLine C 8400 Series Reference Manual page 218

8400 HighLine C | Reference manual
Motor control (MCTRL)
Sensorless control for synchronous motors (SLPSM)
Optimising the pole position identification

Stop!
In case of a too high setting in C02872, an impermissible motor current may
occur during pole position identification. In this case, the "Fault" error response
occurs and the "ID5: Pole position identification error" error message entered in
the logbook.
In case of aconsiderably too high setting in C02872:
• The following current monitoring functions can be triggered:
– OC7: Motor overcurrent
– OC11: Active clamp operation
– OC1: Power section - short circuit
• The optimisation degree "0 %" is displayed in C02870.
• The time "0 ms" is displayed in C02871.

How to optimise the pole position identification without motion:
1. For optimisation, enable the controller for various rotor displacement angles.
2. After every controller enable, check the optimisation degree displayed in C02870.
The pole position identification is set optimally if an optimisation degree in the
range 70 ... 130 % is displayed in
3. When the optimisation degree is > 130 %:
Reduce the setting in
rotor displacement angles until an optimisation degree < 130 % is displayed.
4. When the optimisation degree is < 70 %:
Increase setting in
rotor displacement angles until an optimisation degree > 70 % is displayed.
5. Optional:
displacement angle. This can prevent e.g. a reversing of the motor due to the
accuracy of identification if applications require it.
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C02870
C02872 step by step an execute controller enable for various
C02872 step by step and execute controller enable for various
C02875 serves to increase or reduce the identified electrical rotor
L
after every controller enable.
Firmware ≤ 11.00 - DMS 6.0 EN - 10/2011