Commissioning
5-6
BA9300SU EN 2.1
Optimise the current controller
Preparations
• Go to the submenu of the code list (GDC) to code C0292 (SSC I
M
- setpoint) and enter the
rated current of your drive
• Set the feedback of the drive to ’1’ under C0025 (i.e. drive without feedback)
• The current controller is adjusted under codes C0075 (V
p
) and C0076 (T
r
). For this, call the
parameter menu in Fig. 5-2.
9300std202
Fig. 5-2 Parameter menu for current controller adjustment
• Lay a motor phase to the current probe connected to an oscilloscope.
• Storage oscilloscope settings:
– Time basis: 200 or 500
µs/div
– Auto trigger
• Select minimum speed setpoint at the controller
Optimisation of current controller:
• Enable the controller until the current indicated on the oscilloscope reaches its maximum
value.
• Inhibit the controller and switch to quick stop.
• Select the trigger mode for the oscilloscope
• Enable the controller for a short time
• Observe the transient response at the oscilloscope. Use C0075 and C0076 to adapt it as
showninFig.5-3.
9300std201
Fig. 5-3 Oscillograph of an optimised current controller
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