00196044-05 - sg x und x4i fse_en - 第227页
Gantry Checking the Track Signals Track Signals and Zero Pulse S tudent Guide (FSE) SIPL ACE X Series and X4I Edition 01/2009 EN Gantry 227 6.4.2.2 Digit al T rack Signals To check the digital track signals , connect the…
Gantry
Track Signals and Zero Pulse Checking the Track Signals
Student Guide (FSE) SIPLACE X Series and X4I
Gantry Edition 01/2009 EN
226
6.4.2 Checking the Track Signals
6.4.2.1 Analog Track Signals
To check the track signals, connect the track signal tester and the oscilloscope. (see Section (6.4.1.1
Measuring the Analog Zero Pulse Signal
J
222 ) )
X Switch the machine on.
X Switch the track signal tester to
Calibrate oscilloscope.
X Switch the oscilloscope to
DC, Refr., Non Store, Auto (20 ms).
X Voltages V/Division decrease up to 0.5 V/Div.
X Switch the oscilloscope to
X/Y
--> Illuminated point will appear!
X Move the point into the middle of the display.
X Measurement system to position
Sinus amplifier output.
X Manually move the selected axis back and forth.
6-17: Analog track signals A and B in X/Y oscilloscope mode
X The adjacent picture should appear on the
oscilloscope.
NOTE:
A new version of the incremental
encoder (one field lens) can recognize
signals from 1.8 to 3.6 Vss.
6-18: Analog track signals 90° phase shift
X Switch the oscilloscope to normal operation.
X The adjacent picture should appear on the
oscilloscope.
Gantry
Checking the Track Signals Track Signals and Zero Pulse
Student Guide (FSE) SIPLACE X Series and X4I
Edition 01/2009 EN Gantry
227
6.4.2.2 Digital Track Signals
To check the digital track signals, connect the track signal tester and the oscilloscope. (see Section
(6.4.1.2 Measuring the Digital Zero Pulse Signal
J
224 ) )
The measurement sequence is identical to that described in Section (6.4.2.1 Analog Track Signals
J
226 ) .
6-19: Digital track signals 90° phase shift
Legend
1. Track A
2. Track B
Gantry
Axis Control Axis Control Assemblies
Student Guide (FSE) SIPLACE X Series and X4I
Gantry Edition 01/2009 EN
228
6.5 Axis Control
6.5.1 Axis Control Assemblies
6.5.2 Checking the X Axis Dynamics
The inspection of dynamics occurs with the following signals:
Deviation of position
Uncommutated target current value
End signal (adapter board, axis in target position)
Actual position = target position signal (axis test box output end position signal)
6-20: "Axis control" assemblies
The control loop for the X and Y axis consists of
the following parts:
Axis card A363 with VC3 controller or A364
Servo board (TDS)
3 phase AC linear motor
Measurement system (incremental scale and
encoder (read unit))
To protect the linear motors from overtemperature,
all these motors have an internal temperature
sensor.
Legend
1. Axis controller board A363 with VC3 controller
(VC = Velocity Commutation) or A 364
2. Control signals I
nom "W"
and I
nom "U"
3. Servo amplifier
4. LEDs on servo board:
GREEN: power supply ON
GREEN: Servo enable, if the enable signal
has been received from the axis board.
ORANGE: Display R.M.S. current limiter
shorter than 2.5 s.
RED: Error: overvoltage, overcurrent,
overtemperature longer than 2.5 sec.
5. 3-phase AC linear motor for X and Y axes with
integrated temperature sensor.
6. Between the motor and incremental encoder
there is a fixed mechanical connection.
7. Incremental encoder: transmits the exact
position of the axis. The track signals are the
only feedback signals for the axis control.
The servo board directly controls the linear motor,
the intermediate circuit voltage is 250 V.
NOTE:
Before checking the axis dynamics, make sure that the machine has reached its operating
temperature. Switch the machine on at least 30 minutes before you begin work.