00196044-05 - sg x und x4i fse_en.pdf - 第388页

Twin Head Axis Control Axis Control of Twin Head Z Axis S tudent Guide (FSE) SI PL ACE X Series and X4I T win Head Edition 01/2009 EN 388 9.6.4 Axis Control of T win Head Z Axis The Z ax is is driven by a 3-phase AC line…

100%1 / 632
Twin Head
Twin Head Axis Track Signals Axis Control
Student Guide (FSE) SIPLACE X Series and X4I
Edition 01/2009 EN Twin Head
387
9-30: Measurement setup of Twin head track signals with the axis test box
NOTE:
The zero pulse measured at the axis test box has been reversed to become the zero pulse of
the Schmitt trigger circuit.
Twin Head
Axis Control Axis Control of Twin Head Z Axis
Student Guide (FSE) SIPLACE X Series and X4I
Twin Head Edition 01/2009 EN
388
9.6.4 Axis Control of Twin Head Z Axis
The Z axis is driven by a 3-phase AC linear motor. The intermediate circuit voltage is 60 V (for high force
Twin head 120 V). Axis control is via 2 control signals from the VC3 controller (phase shift 120°) I nom
"W" and I nom "U". The third phase is generated at the servo amplifier.
9-31: Axis control Twin head Z axis
Legend
1. Axis controller board A363 with VC3 controller
(VC = Velocity Commutation)
2. Control signals
3. Servo amplifier
4. LEDs on servo board:
– Power supply ON
– Servo enable, if the enable signal has
been received from the axis board.
– Display R.M.S. current limiter shorter than
2.5 s.
– Error: overvoltage, overcurrent,
overtemperature longer than 2.5 sec.
5. 3-phase AC linear motor with integrated
temperature sensor.
6. Between the motor and the incremental scale
there is a fixed mechanical connection. The
incremental encoder is fixed to the Twin head
housing.
7. Incremental encoder: transmits the exact
position of the axis (track signals).
8. Force sensor
The servo board controls the 3-phase AC motor
directly.
Twin Head
Axis Control of Twin Head Z Axis Axis Control
Student Guide (FSE) SIPLACE X Series and X4I
Edition 01/2009 EN Twin Head
389
9.6.4.1 Checking the Twin Head Z Axis Dynamics
See also:
J
9.6.1 Twin Head Axis Dynamics [
J
378]
9.6.4.2 Measurement Setup with SAT Box and A364
9-32: Measurement setup with SAT box
ATTENTION:
Before adjusting the axes, make sure that the machine has reached its operating temperature.
Switch the machine on at least 30 minutes before you begin work.