Lenze i700

5 Motor control & motor settings
5.10 Synchronous motor (SM): Pole position identification
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Lenze · i700 servo inverter · reference manual · DMS 3.0 EN · 06/2016 · TD06
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Subindex 1: PPI (min. movement): Current amplitude
Adjustment of the current amplitude in percent
• For large machines and high mass inertia values or for linear direct drives, the current amplitude usually has to
be increased.
• A Lenze setting of "100 %" corresponds to 35 % of the rated motor current (0x6075
or 0x6875 for axis B).
Note!
If the current amplitude is set to > 400 %, the device utilisation (Ixt) monitoring and/or one of the motor monitoring
functions may respond and cause the abort of the pole position identification.
Setting range (min. value | unit | max. value) Lenze setting
1 % 1000 25 %
 Write access  CINH  OSC  P  RX  TX UNSIGNED_16
Subindex 2: PPI (min. movement): Ramp time - current
Adjustment of the rate of rise of the current in percent
Setting range (min. value | unit | max. value) Lenze setting
1 s 600 10 s
 Write access  CINH  OSC  P  RX  TX UNSIGNED_16
Subindex 3: PPI (min. movement): Gain
Adjustment of the proportional gain of the PI controller
• With the Lenze setting "0", the PI controller works as an I-controller.
Setting range (min. value | unit | max. value) Lenze setting
0 % 1000 0 %
 Write access  CINH  OSC  P  RX  TX UNSIGNED_16
Subindex 4: PPI (min. movement): Reset time
Adjustment of the PI controller reset time
• For this, observe the following setting details:
• In order to be able to compensate a positional variation faster, first the reset time should be reduced. If this
does not result in the desired behaviour, the proportional gain can be increased.
• Ensure that the position control does not get unstable. We therefore recommend to use an I controller.
Setting range (min. value | unit | max. value) Lenze setting
0.1 ms 6000.0 62.5 ms
 Write access  CINH  OSC  P  RX  TX Scaling: 1/10 UNSIGNED_16
Subindex 5: PPI (min. movement): Max. move permitted
Adjustment of the permitted movement
• The pole position identification comprises a monitoring function for the follow-up control. If a movement
greater than the permissible movement set is detected by the encoder system, the pole position identification is
aborted and the error response parameterised is tripped:
• In order to detect a non-permissible blocking of the machine, a positive and negative test angle relative to the
current position are defined after the identification. The machine must align itself to these two test angles
within a tolerance of 25 %. The size of the test angle corresponds to the max. move permitted set here.
Setting range (min. value | unit | max. value) Lenze setting
1 ° 90 20 °
 Write access  CINH  OSC  P  RX  TX UNSIGNED_8