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Supplementary conditions for the use of third-party motors:
● Experience shows that the procedure is very suitable for motors with magnets within the
rotor core (IPMSM - Interior Permanent Magnet Synchronous Motors).
● The ratio of stator quadrature reactance (Lsq): Stator direct-axis reactance (Lsd) must be
> 1 (recommendation: minimum > 1.5).
● The possible operating limits of the procedure depend upon up to what current the
asymmetrical reactance ratio (Lsq:Lsd) is retained in the motor. If the procedure should
be operable up to the rated motor torque, then the reactance ratio must be retained up to
the rated motor current.
A prerequisite for optimum behavior is the entry of the following parameters:
● Enter the saturation characteristic: p0362 - p0369
● Enter the load characteristic: p0398, p0399
Commissioning sequence for closed-loop controlled operation to zero speed:
● Run through the commissioning with motor identification at standstill.
● Enter the parameters for the saturation characteristic and the load characteristic.
● Activate closed-loop controlled operation to zero speed via parameter p1750 bit 5.
Figure 7-13
Zero crossing in closed-loop controlled operation to zero speed
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
Setpoint channel and closed-loop control
7.4 Vector speed/torque control with/without an encoder
463
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