Zapi ACE2, Руководство пользователя

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AF2ZP0CL - ACE2 - User Manual Page - 81/85
8.19 Analysis and troubleshooting of warnings displayed on
console
1) VACC NOT OK
Cause:
The test is made at key-on and immediately after 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:
Acquire the maximum and minimum potentiometer value through the
PROGRAM VACC function. If the alarm is still present, check the mechanical
calibration and the functionality of the potentiometer. If the alarm is not
disappeared the failure is in the ACE logic board, replace it.
2) 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 travel demand active at key on
- 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 ACE logic board.
3) VACC OUT OF RANGE
Cause:
The CPOT input red by the microcontroller is not comprised in the range
Vacc_min ÷ Vacc_max, programmed through the “PROGRAMM VACC”
function.
Troubleshooting:
Acquire the maximum and minimum potentiometer value through the
PROGRAM VACC function. If the alarm is still present, check the mechanical
calibration and the functionality of the potentiometer. If the alarm is not
disappeared the failure is in the ACE logic board, replace it.
4) 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:
It is necessary to improve the controller cooling. For realise an adequately
cooling in case of finned heat sink are important factor the flux [m3/h] and
temperature [°C] of cooling air. In case of thermal dissipation realised with
the controller base plate installed on truck frame it is important the thickness
of frame and the planarity and roughness of its surface. 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.