00196044-05 - sg x und x4i fse_en.pdf - 第294页
C&P20A Axis Control Axis Control of Z Axis S tudent Guide (FSE) SI PL ACE X Series and X4I C&P20A Edition 01/2009 EN 294 7.7.4.3 Signal Example C&P20A Z Axis with the Control Signal at Vnom. Output 7-57: Z ax…
C&P20A
Axis Control of Z Axis Axis Control
Student Guide (FSE) SIPLACE X Series and X4I
Edition 01/2009 EN C&P20A
293
7.7.4 Axis Control of Z Axis
7.7.4.1 Checking the Z Axis Dynamics
7.7.4.2 Measurement Setup
The Z-C&P20A positioning time for 15 mm is 20 ms in both directions. The positioning time for the 0-
20000 digit (10 mm) range should be 16.7 ms.
Position the gantries so that the Z axis is above the calibration component position.
7-56: Axis control of Z axis
The C&P20A Z axis is driven via a 3~ AC linear
motor. This activation is via two control signals
phase from the VC3 controller Itarget "W" and I-
target "U". The intermediate circuit voltage is
approx. 24V.
Legend
1. Axis Controller Board A364
2. Control signal I nom "W"
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 or nominal current
overshoot longer than 2.5 sec.
5. 3~ AC (DC) 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 (track signals).
8. Elastic mech. connection (belt) and light
barrier down, for fast recognition of the lower
position.
The servo board controls the 3-phase AC (DC)
motor directly.
NOTE:
The measurement procedure follows the same preparations and procedures as for the star axis.
C&P20A
Axis Control Axis Control of Z Axis
Student Guide (FSE) SIPLACE X Series and X4I
C&P20A Edition 01/2009 EN
294
7.7.4.3 Signal Example C&P20A Z Axis with the Control Signal at Vnom. Output
7-57: Z axis dynamic signals for C&P20A -15.4 mm range
Legend
1. Motor phase current signal (
Vnom output
)
2. Uncommutated current signal V
reg
3. Deviation of position
4. End signal
15.4 mm positioning with the Z axis into free space
7-58: Z axis dynamic signals for C&P20A - calibration tool pocket
Legend
1. Motor phase current signal (V
nom
output)
, positioning up in each case
2. Uncommutated current signal V
reg
, positioning downwards
3. Deviation of position
4. End signal
6.8 mm positioning with the Z axis into the
calibration tool pocket
C&P20A
Axis Control of DP Axis Axis Control
Student Guide (FSE) SIPLACE X Series and X4I
Edition 01/2009 EN C&P20A
295
7.7.5 Axis Control of DP Axis
7.7.5.1 Checking the DP Axis Dynamics
7.7.5.2 Measurement Setup
X The SIEMENS service technician uses special software to start a continuos function run.
X The value shown for each individual DP drive should be less than 300 ms at 180°.
7-59: Axis control of DP axis for a C&P20A segment
The DP axes of the C&P20A segments are
positioned by a DP masterboard and an "on
board" direct control unit. The control system uses
CAN Bus at the respective head board. The
intermediate circuit voltage is approx. 24V. Each
segment has its own DP drive for rotating
independently of the others.
The station software transmits the activation
commands via the machine CAN Bus to the head
processor.
This activates via 4 DP tasks and the head CAN
bus system with activation commands, via the
head adapter, intermediate distributor and the
collector rings of the E/D transformer at the
motherboard with the DP master.
The DP motor control in the segment is handled at
the DP control board with the help of count pulse
from the integrated HALL incremental encoder.
NOTE:
There are no measurement points accessible on the C&P20A rotary drives.