Troubleshooting guide

52
Calibration Procedure of Optical Actuators
7. Quickly press and release the blue push
button on the actuator one time. This places
the actuator in calibration mode. The red
LED will begin flashing rapidly.
8. Note: When the actuator is in calibration
mode, it outputs 0V when the actuator is
running and 5V when it is still. Thus, as
stated earlier, the actuator voltage will
fluctuate during calibration. After the
actuator has been calibrated, 0V output will
correspond to the minimum position and 5V
to the maximum position.
9. Note: The “Slide calibration” screen on
the Vission/Vantage has a “Current”
window, which displays twice the actuator
output voltage. This value, (the % volume
and the % capacity) displayed in the
“Current Vol” and Current Cap” Windows
are meaningless until calibration has been
completed.
10. Use the DEC button on the Vission/Vantage
panel to drive the slide valve to its minimum
“mechanical stop” position. Do not
continue to run the actuator in this
direction after the slide valve has reached
the stop. Doing so may cause damage to
the actuator or the slide valve.
Press down on the photochopper shaft to
disengage the brake, releasing tension
from the motor mount. Use the INC
button to pulse the actuator to where the
slide is just off of the mechanical stop
and there is no tension on the motor
shaft.
11. Quickly press and release the blue button
on the actuator again. The red LED will
now flash at a slower rate, indication that
the minimum slide valve position (zero
position) has been set.
12. Use the INC button on the Vission/
Vantage panel to drive the slide to its
maximum “mechanical stop” position.
Do not continue to run the actuator in
this direction after the slide valve has
reached the stop. Doing so may cause
damage to the actuator or the slide
valve. Press down on the photochopper
shaft to disengage the brake, releasing
tension from the motor mount. Use the
DEC button to pulse the actuator to
where the slide is just off of its mechani-
cal stop and there is no tension on the
motor shaft.
13. Quickly press and release the blue
button on the actuator one more time.
The red LED will stop flashing. The
actuator is now calibrated and knows the
minimum and maximum positions of the
slide valve it controls. Now the capacity
or volume channel of the Vission/
Vantage can be calibrated.
14. Use the Dec button to move the actuator
towards its minimum position while
watching the millivolt readout on the
Vission/Vantage screen. Discontinue
pressing the DEC button when the
millivolt reading the “Current” window
above the “Set Min” button is approxi-
mately 500 millivolts.
Remove Cover
Press Down On
Photochopper
Do not touch wires, may cause an
electrical shock!