AF6ZP0AL - COMBIAC0 & ACE0 - User Manual
Page - 71/79
12.5 Analysis and troubleshooting of warnings
1) “SLIP
PROFILE”
Cause:
There is an error on the choice of the parameters of the slip profile.
Troubleshooting:
Check in the hardware setting menu the value of those parameters.
2) “FORW+BACK”
Cause:
This alarm occurs when both the travel demands (Fwd and Bwd) or
BACKING FOR and BACKING REV are active at the same time.
Troubleshooting:
Check the wiring of the Fwd and Rev travel demand inputs and BACKING
FOR and BACKING REV inputs (use the readings in the TESTER to facilitate
the troubleshooting). Check the microswitches for failures.
A failure in the logic is possible too. So, when you have verified the travel
demand and Backing switches are fine working and the wiring is right, it is
necessary to replace the controller.
3) “INCORRECT
START”
Cause:
This is a warning for an incorrect starting sequence.
Troubleshooting:
The possible reasons for this alarm are (use the readings in the TESTER to
facilitate the troubleshooting):
A) A travel demand active at key on
B) Presence man sensor active at key on
Check the wirings. Check the micro-switches. It could be also an error
sequence made by the operator. A failure in the logic is possible too; so
when all of the above conditions were checked and nothing was found,
replace the controller.
4) “VACC
NOT
OK”
Cause:
The test is made at key-on and after 20sec that both the travel demands
have been turned off. This alarm occurs if the ACCELERATOR reading in the
TESTER menu’ is 1,0V higher than PROGRAM VACC min acquisition when
the accelerator is released.
Troubleshooting:
Check the mechanical calibration and the functionality of the potentiometer.
5) “HIGH
TEMPERATURE”
Cause:
This alarm occurs when the temperature of the base plate is higher than 85°.
Then the maximum current decreases proportionally with the temperature
increases from 85° up to 105°. At 105° the Current is limited to 0 Amps.
Troubleshooting:
Improve the air cooling of the controller. If the alarm is signalled when the
controller is cold, the possible reasons are a thermal sensor failure or a
failure in the logic card. In this case, it is necessary to replace the controller.
