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BECKHOFF
5.5
Optimization of the control loops
The basic setting must be finished.
Preparation
1.
OPMODE:
Set the OPMODE "1,analog speed" (screen page AMPLIFIER)
2.
Setp. function:
Set the analog I/O-function to "0,Xsetp=An In 1" (screen page ANALOG-I/O)
3.
Save the parameters:
- Click on the
- Answer the query RESET AMPLIFIER with YES
4.
An In 1:
Short-circuit the setpoint input 1 or apply 0V to it
5.
OSCILLOSCOPE:
Channel1: n_act
6.
Reversing mode:
Go to the screen page OSCILLOSCOPE/SERVICE/PARAMETER and set the parameters for reversing mode to values that are
safe for your machine, also when the positioning control loop is switched off (approx. 10% of the final limit speed).
During operation of the service function "Reversing mode" the analog setpoint input
is switched off and the internal positioning control is disabled.
Make sure that the individual motion of the selected axis is possible without any
hazard.
For safety, only operate the ENABLE signal of the amplifier with an interlock
switch, and check the EMERGENCY STOP function for this axis.
5.6
Optimizing the current controller
Screen page CURRENT CONTROLLER
1.
If a suitable amplifier-motor combination is used, the current controller will already have a stable setting for almost all applica -
tions.
2.
Ipeak:
- Reduce Ipeak to the rated value for the motor (protection of the motor)
3.
Switch on the mains/line power.
4.
Provide the analog setpoint:
- Analog-In1 = 0V
5.
Enable the amplifier:
- High signal at Enable input X3/15. In the AXIS status field: NO SW-EN
- Click on the SW-Enable radio button. ENABLE now stands in the AXIS status field.
The motor now stands under speed control, with n=0 rpm. If the current controller is not stable in operation (motor oscillates with
a frequency clearly above 100Hz), please contact our applications department.
Setup Software
07/03
button (screen page AMPLIFIER)
Channel2: I_act (screen page OSCILLOSCOPE)
Axis Commissioning Checklist Procedures
19
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