00195376-05_SM_D1_D1i_D2_D2i_EN.pdf - 第224页

Settings Axis Control 6.4.5 Track Signals for Head Axes 224 Service Manual SIPLACE D1/D1i/D2/D2i See also   5.5 Tra ck Signal Te ste r [00322510-01] [ ➙ 197] 6.4.5.3 6 . 4 . 5 . 3 P r e p a r in g T r a c k S ig n a ls…

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Settings
6.4.5 Track Signals for Head Axes Axis Control
Service Manual SIPLACE D1/D1i/D2/D2i 223
6.4.4.2
6.4.4.2 Positioning Time for C&P12 Head
Positioning Time for C&P12 Head
6.4.5
6.4.5 Track Signals for Head Axes
Track Signals for Head Axes
The track signals play a greater role with the new drive concept for SIPLACE machines. They are re-
sponsible for the exactly and precise positioning of the axes and are used as the only feedback signal
in the closed-loop control system, meaning that they have an important influence on the axis dynamics.
6.4.5.1
6.4.5.1 Overview
Overview
Oscilloscope settings
6.4.5.2
6.4.5.2 Measurement Setup
Measurement Setup
The head axis track signals can only be measured as digital signals i.e. the analog signals are converted
into digital signals in the read unit.
Axis Mode/path Positioning time
Star Axis continuous run / 1 Star step 43ms +/-3ms
Z Absolute, free space / 685 digits 21ms, -1ms
Z Light barrier, into calibration tool pocket / approx. 685 digits 21 +/-3ms
DP 100 digits 13ms +/-3ms
DP 3600 digits 39ms +/-3ms
Axes Mechanical settings Oscilloscope diagram
Star 25x: resolution 1/1000° Digital track signal amplitude 3.6Vpp
Z nothing Digital track signal amplitude 3.6Vpp
DP Incremental encoder set to 1.5 mm, paral-
lel to the glass
Digital track signal amplitude 3.6Vpp
General measurement structure for checking track sig
-
nals
Legend
1. Intermediate distributor SP 6-12, digital
2. X13: track signal Z axis
3. X15: track signal star axis
4. X16: track signals DP axis
Use the track signal tester [00322510-xx] to test the head
axis track signals.
Assignment of connectors X13, X15, X16:
1. Ground
2. Track A
3. Track A
4. Ground
5. Track B
6. Track B
7. +5 V
8. Track N
9. Track N
10. Pin removed
Settings
Axis Control 6.4.5 Track Signals for Head Axes
224 Service Manual SIPLACE D1/D1i/D2/D2i
See also
5.5 Track Signal Tester [00322510-01] [ ➙ 197]
6.4.5.3
6.4.5.3 Preparing Track Signals for Star Axis Control (Example)
Preparing Track Signals for Star Axis Control (Example)
Digital head axis track signals
Legend
1. Track A
2. Track B
NOTICE! The pulse width is dependent on the
speed, the phase location is dependent on the direction.
Settings
6.4.6 Star Axis Control System Axis Control
Service Manual SIPLACE D1/D1i/D2/D2i 225
6.4.6
6.4.6 Star Axis Control System
Star Axis Control System
6.4.6.1
6.4.6.1 Checking the Star Axis Dynamics
Checking the Star Axis Dynamics
Measurement Setup
Signal Example with the Vnom. Output
The star axis dynamics are checked in the permanent star step mode. A motor phase current is emitted
at the V
nominal
output of the axis test box. (control signal 1). The uncommutated current setpoint signal
(signal 3) shows increased friction values for the axis.
The positioning time for the star axis is 43 +/-3 ms for the C&P12.
Star axis control system
The star axis is driven via a 3-phase AC stepping motor
with an intermediate circuit voltage of 150 V. The activa-
tion is via two control signals (phase shift 120°) from the
processor of the A364 I
target "W"
and I
target "U"
. The third
phase is calculated automatically.
Legend
1. Axis board A364
2. Control signals I
target
"W"
and I
target
"U"
3. Servo amplifier
4. LEDs on servo amplifier:
5. 3 phase AC motor.
6. Between the motor and the 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 sig-
nals for the axes.
The servo board controls the motor directly.
NOTICE
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.
NOTICE
The measurement procedure follows the same preparations and procedures as for the X axis.