Siemens simovert masterdrives Betriebsanleitung Seite 223

05.2003
Example
Automatic motor
identification
WARNING
Siemens AG 6SE7087-6KP60
SIMOVERT MASTERDRIVES
P107 = 52.00 Hz
P108 = 1500.0 rpm
P109 = 2
Pre-assignment:
P352 = 52.00 Hz
P353 = 1560 rpm
For a maximum speed of four times the rated motor speed you must set
the reference speed to at least 3000 rpm. The reference frequency is
adjusted automatically (P352 = P353 / 60 x P109).
P352 = 100.00 Hz
P353 = 3000 rpm
A setpoint speed of 1500 rpm corresponds to a setpoint frequency of
50.00 Hz or an automation value of 50.0 %.
The representation range ends at 6000 rpm (2 x 3000 rpm).
This does not affect the internal representation range of the control
system. Since the internal control signals refer to the rated motor
quantities, there is always sufficient reserve control capacity.
The reference speed should normally be set to the desired maximum
speed.
Reference frequencies of P352 = P107, P352 = 2 x P107,
P352 = 4 x P107 are favorable for the calculating time.
For a maximum torque of three times the rated motor torque (P113) it is
advisable to set the reference torque to between twice and four times
the value of parameter P113 (for four to eight times the representation
range).
For exact determination of the motor parameters, it is possible to carry
out automatic motor identification and speed controller optimization.
For this purpose, the procedures of the "Drive setting" have to be
observed. If one of the vector control types (P100 = 3, 4, 5) of a
converter without a sinusoidal output filter and of an induction motor
without an encoder or with a pulse encoder (correct number of pulses in
P151) is used, the motor identification procedure can be shortened. In
this case, "Complete motor identification" has to be selected (P115 = 3)
and the converter has to be powered up accordingly if the alarms A078
and A080 appear.
During motor identification inverter pulses are released and the drive
rotates!
For reasons of safety, identification should first be carried out without
coupling of the load.
Operating Instructions
Parameterizing Steps
Rated motor frequency
Rated motor speed
Motor pole pair number
Reference frequency
Reference speed
9-11