4.8 Permanent–magnet synchronous motor with field–weakening (PE spindle)
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
4.8.4 Parameters for PE spindles
The following parameters are used for permanent–magnet spindles (PE
spindles):
Table 4-9 Parameter overview for PE spindles
Parameters
No. Name Min. Standard Max. Units Effective
1015 Activate PE–MSD (SRM) 0 0 1 – PO
... the permanent–magnet spindle (PE spindle, 1FE1 motor) is activated/deactivated for this
drive.
= 1 Permanent–magnet spindle is activated
= 0 Permanent–magnet spindle is de–activated
1128 Optimum load angle (SRM) 90.0 90.0 135.0 Degrees Immedi-
ately
For synchronous motors that have rotors that are not symmetrical around the rotational axis,
the additional reluctance torque can be used to increase the torque.
The optimum load angle specifies at which load angle the torque reaches a maximum value at
150 % rated current.
Note:
Refer to P1149 (reluctance torque constant)
Synchronous motors without rotors that are symmetrical around their rotational axis: e.g. 1FE
motors
Operation with reluctance torque: P1128 and P1149 not equal to the standard value
Operation without reluctance torque: P1128 and P1149 equal to the standard value
1136 Motor short–circuit current 0.0 0.0 500.0 A(rms) Immedi-
ately
The parameter is set by selecting the motor from the motor list or according to the data sheet
of the motor manufacturer.
If the motor manufacturer has no data, then the motor locked–rotor current can be calculated
according to the following formula:
P1136 = (P1114 60 [sec]) / (1000 √3
P1112 P1116 2π)
Note:
P1112 Motor pole pair number
P1114 Voltage constant
P1116 Armature inductance
Note:
For PE spindles, the maximum motor short–circuit current (no–load current) has an effect on
the high motor speeds. This means, if the power module rating is too low, then the maximum
speed will not be reached. Otherwise, the functionality is not restricted.
Parameter
overview
08.0104.05
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