Specifications

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3BUS 208 000 R130178 Platform Tuning
Figure 5-3 Manual Servo Calibration Screen in ft.
4. Set the value for MCjogCommand to 128.
5. Mark two positions on the frame which are 150 cm (60 in.) apart.
6. Use the JOG push buttons to move the head between the marked positions,
adjusting FMAX on the motor controller until the time to traverse the positions
is between six and 10 seconds.
For long frames (greater than 8 meters), the faster time may be required to
successfully accomplish frame tuning.
7. Jog the head, adjust V/F so that the head can be manually stopped as it traverses
without undue effort. Note that this is being done at the jog speed which is
roughly 15 cm/sec (6 in./sec).
Higher scan speeds will require more force to stop and lower scan speeds will
require less force.
8. Manually force the head carriage to move from a stopped position.
9. Adjust the BOOST potentiometer so that significant force is required to make
it move.
10. Ensure that the motor does not heat up when in the off-sheet position (too much
boost can cause a stopped motor to overheat).
11. Exit the ft utility, type q and press RETURN when requested to save the
variables changed in this procedure to the current .ini files.
*** MANUAL SERVO CALIBRATION ***
Variable Name Description Current Value
1: Accel Nominal acceleration. 40.59
2: vmin Minimum speed necessary to move head. 3.85
activeVmin Current minimum speed value in use. 3.85
3: vmax Maximum allowed speed. 40.55
4: vdb Velocity deadband for DDC control. 1.00
5: Kp DDC proportional gain term. 0.250
6: Ki DDC integral gain term. 0.010
7: ddcExcessiveErrorPct Excessive error percent for DDC control. 25.00
8: ddcRestrictedMotionPct Restricted motion percent for DDC control. 50.00
9: vminTune Vmin self-tuning algorithm active. OFF
10: vminFilterFactor Exp. filter factor for vmin self-tuning 0.33
11: MCslope Motor controller slope. 0.09
12: MCoffset Motor controller offset. 18
13: MCjogCommand DAC output for jogging the frame. 128
14: MCfastTuneDAC Motor controller tuning FAST DAC output. 190
15: MCslowTumeDAC Motor controller tuning SLOW DAC output. 80
16: xdb Position deadband for HOMING control. 0.95
TO MODIFY A VARIABLE ENTER ITS NUMBER NOW
(r to redisplay, q to quit, Q to exit):