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AF2ZP0CE - ACE2 350/450 - User Manual Page - 21/83

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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Zapi AC-2 Manual do Utilizador Página 21