Lenze · i700 servo inverter · reference manual · DMS 3.0 EN · 06/2016 · TD06 138
5 Motor control & motor settings
5.12 Fine adjustment des motor model
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5.12.2 Synchronous motor (SM): Compensating for temperature and current influences
The properties of the permanent magnets of permanently excited synchronous motors (SM, PSM)
depend on the temperature and the amperage. The relationship between motor current and
resulting torque changes correspondingly.
The influences of the temperature and the amperage on the magnetisation can be taken into
account by the motor control and hence be compensated for.
• To compensate for the temperature dependence of the magnets, the temperature coefficient
(kT) of the permanent magnet must be entered in object 0x2C03:3
(or 0x3403:3 for axis B)
(linear characteristic).
• To compensate for the current dependence of the magnets, multiple grid points of a
characteristic must be entered in the following object (non-linear characteristic):
0x2C06 | 0x3406 - Motor (SM): Magnet characteristic (current) - grid points
Sub. Name Lenze setting Data type
1 Magnet characteristic: x1 = i01/iN 0 % UNSIGNED_16
2 Magnet characteristic: y1 = kT01/kTN 100 % UNSIGNED_16
3 Magnet characteristic: x2 = i02/iN 100 % UNSIGNED_16
4 Magnet characteristic: y2 = kT02/kTN 100 % UNSIGNED_16
5 Magnet characteristic: x3 = i03/iN 200 % UNSIGNED_16
6 Magnet characteristic: y3 = kT03/kTN 100 % UNSIGNED_16
7 Magnet characteristic: x4 = i04/iN 415 % UNSIGNED_16
8 Magnet characteristic: y4 = kT04/kTN 72 % UNSIGNED_16
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