Zapi COMBI AC1 Instrukcja Użytkownika Pobierz pdf (Strona 13)

AESZP0BA – AC1 SSL SENSORED - FREE VERSION - User Manual Page - 13/73

6 OPERATIONAL FEATURES

- Stable speed in every position of the accelerator.

- Regenerative release braking based upon deceleration ramps.

- Regenerative braking when the accelerator pedal is partially released

(deceleration).

- Direction inversion with regenerative braking based upon deceleration ramp.

- Regenerative braking and direction inversion without contactors: only the

main contactor is present.

- The release braking ramp can be modulated by an analog input, so that a

proportional brake feature is obtained (this service is possible but the SW is

not developed yet).

- Optimum sensitivity at low speed.

- Voltage boost at the start and with overload to obtain more torque (with

current control).

- The inverter drives an electromechanical brake

- High efficiency of motor and battery due to high frequency commutations.

- Self diagnosis.

- Modification of parameters through the programming console.

- Internal hour-meter with values that can be displayed on the console.

- Memory of the last five alarms with relative hour-meter and temperature

displayed on the console.

- Test function within console for checking main parameters.

- Speed control.

- Optimum behaviour an a slope due to the speed feedback:

- the motor speed follows the accelerator, starting a regenerative braking if

the speed overtakes the speed set-point.

- the system can perform an electrical stop on a ramp (the machine is

electrically hold on a slope) for a programmable time (see also 13.4 and

12.4.1.9 option STOP ON RAMP).

6.1 Diagnosis

The microprocessor continuously monitors the inverter and carries out a

diagnostic procedure on the main functions. The diagnosis is made in 4 points:

- 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.

- Standby diagnosis at rest that checks: phase's voltages, contactor driver,

current sensor, can-bus interface.

- Diagnosis during operation that checks: contactor driver, current sensors,

encoder, can-bus interface.

- 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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