Lenze i700 - Manual (Page 144)

5 Motor control & motor settings
5.14 Parameterising the V/f characteristic control
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Lenze · i700 servo inverter · Reference manual · DMS 1.5 EN · 03/2014 · TD05
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If the connected mechanics and the conditions in the machine allow it, it may be helpful to
determine the optimal parameters of the current controller by a practical acceleration test with a
reduced maximum current ( 0x6073 or 0x6873 for axis B). Mass inertia and
acceleration/deceleration considerably determine the requirements of the Imax control loop.
Recommendation: Execute the adjustment with the real mass inertia and optimise the
parameters step by step with an increasing acceleration/deceleration. The oscilloscope function
of the »PLC Designers«/»EASY motor starter« serves to record the following objects:
• VFC: Setpoint frequency ( 0x2B0B or 0x330B for axis B)
• Motor: Actual voltage ( 0x2D82 or 0x3582 for axis B)
• Motor: Actual current ( 0x2DD1:5 or 0x35D1:5 for axis B)
• Device: Max. current ( 0x6073 or 0x6873 for axis B)
• Device: Actual output frequency ( 0x2DDD or 0x35DD for axis B)
0x2B08 | 0x3308 - VFC: Imax controller - Parameter
Sub. Name Lenze setting Data type
 1 VFC: Imax controller - gain 0.001 Hz/A UNSIGNED_32
 2 VFC: Imax controller - reset time 100.0 ms UNSIGNED_32
Subindex 1: VFC: Imax controller - gain
Gain for Imax controller
Setting range
(min. value | unit | max. value) Lenze setting
0.000 Hz/A 1000.000 0.001 Hz/A
 Write access  CINH  OSC  P  RX  TX Scaling: 1/1000 UNSIGNED_32
Subindex 2: VFC: Imax controller - reset time
Reset time for Imax controller
Setting range
(min. value | unit | max. value) Lenze setting
1.0 ms 2000.0 100.0 ms
 Write access  CINH  OSC  P  RX  TX Scaling: 1/10 UNSIGNED_32