Curtis 1222 - Setup for Encoder Feedback and Home Switch

Curtis 1222 Manual, os 15
85
2 9 J A N U A R Y 2 0 1 3 D R A F T
to a value that will allow the Left stop to be reached. Adjust Analog6 Left Stop
similarly, if necessary.
b. Similarly, move the steered wheel to the Center and observe the two voltages
shown in the Analog5 and Analog6 variables. Set the parameters Analog5 Center
and Analog6 Center to the observed voltages.
c. Finally, move the steered wheel to the Right stop and observe the two volt
-
ages shown in the
Analog5 and Analog6 variables. Set the parameters Analog5
Right Stop and Analog6 Right Stop to the observed voltages.
d. Set the four fault parameters (
Analog5 Fault Min, Analog5 Fault Max, Analog6 Fault
Min, and Analog6 Fault Max). Set these to voltages that will not be reached
during normal operation, but will be reached if the steer position feedback
becomes faulty (e.g., should there be an open or short circuit).
The Fault Min settings must be below the minimum voltage seen on
Analog5 or Analog6 when steered to the maximum left and right positions.
The Fault Max settings must be above the maximum voltage seen on
Analog5 or Analog6 when steered to the maximum left and right positions.
“1” — Setup for Encoder feedback and Home Switch (see pages 38–40)
a. If you have set up a 360° steering function with the command map (see
page 81), you must set up the parameter Feedback Device
» 1-Encoder3 and
4 » Homing » Homing Cam Angle (deg). For 360° steering this parameter should
be set to the angle of the homing cam. This setting is necessary because the
360° steering function has the homing switch triggered in two different
wheel positions.
b. Set the
Input Type, Home on Interlock, and Homing Speed parameters. Homing Speed
can be set to a lower speed than required as the final setting will be performed
in Step
8
-a.
c. Review the diagrams in the
Homing Direction Method parameter description on
page 39. Then determine the correct
Homing Direction Method by observing the
Monitor
» Home Reference » Home variable while also observing the position
of the steered wheel and the Home switch.
If
Home = On and the steered wheel is to the right of the Home switch
(or Home = Off and steered wheel is to the leftt), setting Homing Direction
Method to either 0 or 1 will result in the correct direction toward the Home
switch during homing. Choose 0 or 1 depending on which side of the Home
switch you prefer the steered wheel to be when homing is complete.
If
Home = On and the steered wheel is to the left of the Home switch
(or Home = Off and steered wheel is to the right), setting Homing Direction
Method to either 2 or 3 will result in the correct direction toward the Home
switch during homing. Choose 2 or 3 depending on which side of the Home
switch you prefer the steered wheel to be when homing is complete.
After setting the
Homing Direction Method, verify that the homing function
works correctly starting from either side of the Home switch.
5 — COMMISSIONING