5 Motor control & motor settings
5.12 Fine adjustment des motor model
141
Lenze · i700 servo inverter · reference manual · DMS 3.0 EN · 06/2016 · TD06
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5.12.4 Estimating the optimal magnetising current
In case of the given Lh saturation behaviour, there is (usually) a magnetising current where the
torque efficiency is highest. This magnetising current can be determined by the i700 servo inverter.
• The execution of this function also changes the Lh saturation characteristic (0x2C07
or 0x3407
for axis B) (compressed, extended).
• After executing the function, the magnetising current determined is entered in object 0x2C02:3
(or 0x3402:3
for axis B).
Preconditions for the execution
• Before this commissioning function is executed, the motor parameters and the Lh saturation
characteristic have to be identified.
Determine motor parameters automatically via "motor parameter identification"
( 72)
Asynchronous motor (ASM): Identifying the Lh saturation characteristic
( 128)
• The motor may be firmly braked.
Response of the motor during the execution
Standstill
How to estimate the optimal magnetising current:
1. Set object 0x2822
(or 0x3022 for axis B) to "2".
• The progress of the procedure is shown in object 0x2823
(or 0x3023 for axis B).
2. For permanent storage: Upload the changed controller parameters to the controller from
the i700 servo inverter after the procedure has been completed:
• Lh saturation characteristic (0x2C07
or 0x3407 for axis B)
• Magnetising current (0x2C02:3
or 0x3402:3 for axis B)
The »EASY Starter« serves to save the parameter settings of the i700 servo inverter as
parameter file (*.gdc). In the »PLC Designer«, this file can then be imported in the
corresponding axis. Saving changed parameters safe against mains failure
( 53)
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