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E9 – Speed Range Error
OVERVIEW
During normal run time operation the value stored during auto calibration is used to initially
set the speed (e.g. target speed = 12 MPH, PWM ticks = Maximum PWM = 363). Once the
speed stabilized the actual speed is monitored and if different than the target speed the PWM
value is adjusted until the actual speed matches the target speed. If the PWM value is
changed by more than the amount of ticks required to change 0.8 MPH and the actual speed
does not match the target speed then an E9 error is flagged. This error indicates the motor
controller system is unable to maintain the target speed.
N
Y
N
Y
N
Y
E9 Error
Before cycling power inspect the
motor controller for error
Motor
controller error
Start PWM ½ MAX test
Measure speed and compare
to value displayed in time
window
OK
Perform steps outlined in speed
feedback issue
Run Auto Calibration
Error
Gone
Perform steps outlined in
speed control issue
Done
Record the error
code from the
motor controller
Check for free
movement of
belt roller
movement
Cycle
Power
Run auto
calibration
Done