Lenze i700 - Manual (Page 131)

Lenze · i700 servo inverter · Reference manual · DMS 1.5 EN · 03/2014 · TD05
131
5 Motor control & motor settings
5.12 Fine adjustment des motor model
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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" ( 78)
 Asynchronous motor (ASM): Identifying the Lh saturation characteristic ( 129)
• 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 ( 60)