Lenze 9400 Manual de usuario descargar pdf (Pagina 152)

5 Motor interface

5.4 Servo control (SC)

152

Lenze · Servo-Inverter 9400 HighLine · Reference manual · DMS 10.0 EN · 11/2013 · TD05/06

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

 How to set the current setpoint filters:

1. Adjust the current control loop.

2. Go to C00071

and adapt the reset time of the speed controller to the filter time constant of

the speed filter (C00497

) and the equivalent time constant of the current control loop:

C00071

=16* (C00497 + 200 μs)

Note: The setting of C00071

incorporates the equivalent time constant of the current

control loop. The indicated 200 μs are typical in a power range of up to 20 kW. Beyond it,

higher time constants may occur.

3. Slowly increase the proportional gain in C00070

until the speed control loop starts to

become unstable (acoustic determination or measuring of the motor current).

4. Measure the oscillation frequency using an oscilloscope (observe current or speed).

5. Set the measured oscillation frequency in C00270/1

as filter frequency.

6. Set "50%" of the filter frequency in C00271/1

as filter width.

• Example: Filter frequency = 200 Hz  filter width = 100 Hz.

7. Set "40 dB" in C00272/1

as filter depth.

• If the filter depth is set to "0 dB" (default setting), the filter is not active.

8. Further increase the proportional gain in C00070

until the speed control loop starts to

become unstable again.

• If the oscillation frequency has changed now, readjust the filter frequency by trimming.

The use of a second filter is ineffective here.

• If the oscillation frequency remains the same, readjust the filter depth and/or the filter

width by trimming (the first reduces the amplitude, the second lets the phase rotate

faster).

• Repeat step 8 until the desired behaviour or the limit of a sensible speed controller gain

has been reached.

9. Save parameter set (C00002

= "11: Save start parameters").

 Note!

Readjust the speed controller after setting the current setpoint filter. Optimising the

speed controller. ( 147)

1 2 ... 147 148 149 150 151 152 153 154 155 156 157 ... 953 954

Comentarios a estos manuales

Sin comentarios