Page - 22/85 AF2ZP0CL - ACE2 - User Manual
5.1 Diagnosis
The microcontroller continually monitors the inverter and carries out a diagnostic
procedure on the main functions. The diagnosis is made in 4 points:
1) Diagnosis on key switch closing that checks: watchdog circuit, current
sensor, capacitor charging, phase's voltages, contactor drives, can-bus
interface, if the switch sequence for operation is correct and if the output of
accelerator unit is correct.
2) Standby diagnosis in standby that checks: watchdog circuit, phase's
voltages, contactor driver, current sensor, can-bus interface.
3) Diagnosis during operation that checks: watchdog circuits, contactor driver,
current sensors, can-bus interface.
4) Continuous diagnosis that check: temperature of the inverter, motor
temperature.
Diagnosis is provided in two ways. The digital console can be used, which gives
a detailed information about the failure; the failure code is also sent on the Can-
Bus.
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