Siemens SINAMICS G150, Operating Manual

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11/03 Commissioning
SINAMICS G150
Operating Manual
5-7
NOTE on Improving Closed-Loop Control
A marked improvement in closed-loop control can be achieved if you know the
rated magnetization current of the motor and enter it after commissioning.
In no-load operation and when the load is not connected,
increase the speed to 80 % of the rated motor speed:
- Activate LOCAL mode
- Switch on
- Use the "increase" key to set the speed to 80 % of the rated
motor speed (press <F2> in the operation screen to call up
the mode for entering speed directly and enter the required
speed).
r0027 =
Switch on drive
Reading the current in parameter r0027
This is displayed in the lower bar display on the operator panel.
"Expert" access level
Setting "Expert" access level on the operator panel
Set <key pushbutton> - <access level> - "Expert" and confirm
(enter activation code "47")
Switch off motor
Switch the motor off and allow it to coast to a standstill (wait
until the status "ready to operate" is displayed in the top left of
the operator panel).
p0320 =
Entering the rated magnetization current
Enter the value read in r0027 in p0320
p0977 = 1
Storing the parameters
All the parameter settings will be stored on the CompactFlash
Card.
Fig. 5-7 Procedure for improving closed-loop control