Lenze 931E/K Small Drives Control - Manual (Page 138)

Appendix
Parameterisation of outside motors
Angle encoder
10
l
138 SW−HB 13.0002−EN 4.1
the motor e.m.f. because the speed determined via the feedback features a higher
accuracy. The feedback via the motor e.m.f. requires the entry of additional motor
characteristics in the menu Parameters
W Device parameters W Motor data, see the
chapter "Motor data". (
¶ 133).
(
Stop!
Be careful when activating the feedback via the motor e.m.f.!
With feedback via the motor e.m.f., the real motor speed may significantly
deviate from the setpoint, if the function and the motor data have not been
parameterised correctly. The tolerances of the magnets and windings of the
motors in the series will also influence the result.