The following procedure is performed by field service personnel who are trained and experienced. Use extreme caution and care when performing these adjustments. Live High-Voltage is persent on the terminal strip of the servo pack - use Extreme Caution!
X Axis Calibration
Pre set IN-B Variable Resistor (VR) and Loop VR for the x-axis to 6/10 and 4/10 respectively.
Zero X/Y Table.
Zero the x-axis servo pack.
Run IN-B.NCZ pattern program at the machine in “X/Y Table Test” and make adjustments to match the axis IN-B diagram. (882 ± 2 Pulses)
Stop Machine.
Zero X/Y Table.
Re-zero the x-axis servo pack.
Power Off the machine.
Connect Digital Storage Scope
Power on the machine.
Run LOOP.NCZ in X/Y Table Test.
Adjust Loop VR to obtain the correct wave form (57 ± 2 ms)
Stop the machine
Zero X/Y Table
Zero the x-axis servo pack.
Check Loop wave form again.
Check IN-B settings have not changed by running IN-B.NCZ again.[/color][/color]
Y Axis Calibration
Pre set IN-B VR and Loop VR for the y-axis to 6.5/10 and 3/10 respectively.
Zero X/Y Table.
Zero the y-axis servo pack.
Run IN-B.NCZ pattern program at the machine in “X/Y Table Test” and make adjustments to match the y-axis IN-B diagram. (656 ± 2 Pulses)
Stop Machine.
Zero X/Y Table.
Re-zero the y-axis servo pack.
Power Off the machine.
Connect Digital Storage Scope
Power on the machine.
Run LOOP.NCZ in X/Y Table Test.
Adjust Loop VR to obtain the correct wave form (57 ± 2 ms)
Stop the machine
Zero X/Y Table
Zero the y-axis servo pack.
Check Loop wave form again.
Check IN-B settings have not changed by running IN-B.NCZ again.
Zero Adjustments
Adjust the zero on each servo pack. This is done by pressing and holding the Blue RESET button on the servo pack. Once pressed, adjust the ZERO VR until both green LEDs (A and B) are steady on or off. There should be no motor drift when the leds are no longer flickering.
Calibrate the X Axis
UIC provides a "inb-ncz" pattern in X/Y Table Test. The use of the UIC X/Y Table test will not add any offset data is when to the X/Y Table as the pattern runs. Set "X/Y Table Location Mode" to "Placement Position" and the "Operation Mode" to "Auto." Adjust the IN-B VR such that LEDs 2, 16, 32, 64, 256 and 512 are illuminated. Note that the 2 + 16 + 32 + 64 + 256 + 512 = 882 Pulses (+-2 pulses). Once calibrated, stop the machine by pressing the [STOP] button and allow the X/Y Table to come to the home position. Zero the machine by pressing the [ZERO] button on the main console or by using the “Manual Mode" "Zeroing Operation” Screen
Adjust the zero on the servo pack again. This is done by pressing and holding the Blue RESET button on the servo pack. Once pressed, adjust the ZERO VR until both green LEDs (A and B) are steady on or off. There should be no motor drift when the leds are no longer flickering.
Power Off the machine.
Power Down. Turn off the power!
Carefully connect the Digital Storage Scope to the servo pack. Using a two channel DSO, scope the COIN and VTG signals on the front of the servo pack. Connect the scope ground lead to the header ground pin. Make sure the pins dop not shortto each other.
Power On the machine. (Caution!)
Run a pattern program "loop.ncz" at the machine in X/Y Table test. Adjust the LOOP Variable Resistor to obtain the correct wave form with a 57 ± 2 ms positive going pulse width. Adjust the LOOP VR until you get the correct wave form. This effects the gain, the system should be critically damped such that that no overshoot or undershoot exists in the wave form.
Stop the machine by pressing the [STOP] button and allow the X/Y Table to come to the home position.
Zero X/Y Table - Verify the X/Y Table is the home position by Zeroing the X/Y Table. Zero the machine by pressing the [ZERO] button on the main console or by using the “Manual Mode - Zeroing Operation” Screen
Re-zero the x-axis servo pack (Reference “Zero Servo Pack” above)
Once the LOOP and IN-B settings are adjusted re-zero the x-axis servo pack. Reference “Zero Servo Pack” step above.
Check LOOP wave form again
Once the x-axis servo pack is zeroed check the LOOP wave form to confirm that it has not changed.
Check IN-B settings again
As a final confirmation run IN-B.NCZ to verify that the IN-B setting have not changed.
Zero X/Y Table again
Zero the X/Y Table by pressing the [ZERO] button on the main console or by using the “Manual Mode - Zeroing Operation” Screen
Calibrate the Y axis
Adjust the zero on each servo pack. This is done by pressing and holding the Blue RESET button on the servo pack. Once pressed, adjust the ZERO VR until both green LEDs (A and B) are steady on or off. There should be no motor drift when the leds are no longer flickering.
Run pattern program IN-B at the machine and make IN-B adjustments to Servo Pack.
Run the Pattern Program IN-B at the machine. Run the pattern in X/Y Table Test. The use of X/Y Table test is preferable over Dry Cycle because the Turret is not cycling and no offset data is applied to the X/Y Table as the pattern runs. Set X/Y Table Location Mode to Placement Position and Operation Mode to Auto. Adjust the IN-B Variable Resistor to such that LEDs 16, 128 and 512 should be illuminated. This equals 656 ± 2 Pulses.
Stop the machine by pressing the [STOP] button and allow the X/Y Table to come to the home position.
Zero X/Y Table again
Verify the X/Y Table is the home position by Zeroing the X/Y Table. Zero the machine by pressing the [ZERO] button on the main console or by using the “Manual Mode - Zeroing Operation” Screen
Adjust the zero on the servo pack again. This is done by pressing and holding the Blue RESET button on the servo pack. Once pressed, adjust the ZERO VR until both green LEDs (A and B) are steady on or off. There should be no motor drift when the leds are no longer flickering.
Power Off the machine.