Morris PROAG 16K PLUS - Shaft Sensor Shaft Sensor

Troubleshooting
16K PLUS October 2019 8-7
Shaft Sensor Shaft Sensor
The Shaft sensor is used to monitor the location of
the power slide as it moves up and down the bed. To
view what the computer is reading for the power slide
position, go to the “Measure - Sensors” menu. The
units of measurement are “pulses”. Each time a tooth
of the star wheel passes by the sensor, it either adds
or subtracts a “pulse” depending on the direction the
tooth is going.
It is very important that the shaft sensor is oriented
correctly so it reads in the correct direction. See the
following diagram to determine the correct sensor
position.
Common causes for the Shaft sensor to not function
properly include:
• Incorrect orientation: If the sensor is not oriented
correctly, it will not function properly. The number of
“Pulses” should increase as the power slide move
to the back of the machine, and should decrease as
the power slide returns toward the home position.
Typically, the power slide “Pulses” should be as
shown
• Incorrect sensor gap: The gap between the sensor
and the star wheel should be 1/16 of an inch. Too
large a gap may give inconsistent readings.
Important: Insufcient gap may allow the sensor to
contact moving parts and be destroyed.
• Debris on sensor: Small metallic particles can build
up on the sensor causing it stop working. If metal
lings are building up on the sensor, determine the
cause of the lings and rectify the problem. If the
machine is being operated in an area with volcanic
ash, such as the Pacic North West, it may be
necessary to regularly clean the sensors of debris.
• Sensor failure: From time to time sensors will fail. If
you suspect this, rst test the wire harness for shorts
or broken wires. Otherwise, use a known working
sensor to test the operation of computer and harness.
See “Harness Schematics” for more information.
16k PLUS Control System - Continued
Sensor Troubleshooting - Continued
SHAFT SENSOR
8
Note: Failure to orient the Shaft sensor correctly
will result in erratic or incorrect readings.