Zapi ACEX, User Manual

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Page - 22/81 AFCZP0BC- COMBIACX & ACEX - User Manual
5 OPERATIONAL FEATURES
- Speed control.
- Optimum behaviour on a slope if the speed feedback is used:
1. The motor speed follows the accelerator, starting a regenerative braking if
the speed overtakes the speed set-point
2. The system can perform an electrical stop on a ramp (the machine is
electrically hold on a slope) for a programmable time (if encoder is used)
- 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 analogue input, so that a
proportional brake feature is obtained.
- Optimum sensitivity at low speeds.
- Voltage boost at the start and with overload to obtain more torque (with current
control).
- The inverter can drive an electromechanical brake.
- High efficiency of motor and battery due to high frequency commutations.
- 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.
- Direct communication between traction AC inverter and pump DC chopper.
5.1 Diagnosis
The microcontrollers continually monitor the inverter and the chopper and carry out
diagnostic procedures on the main functions.
The diagnosis is made in 4 points:
1) Diagnosis at start-up that checks: watch-dog, Current Sensors, Capacitor
charging, phase’s voltages, pump motor output, contactor drivers, can-bus
interface, presence of a start requirement, connection with the Can Tiller.
2) Standby Diagnosis that checks: watch-dog, phase’s voltages, pump motor
output, Contactor Drivers, Current Sensors, can-bus interface.
3) Driving diagnosis that checks: Watchdog, Current sensors, Contactor(s), can-
bus interface.
4) Continuos Diagnosis that checks: power stage temperature, motor temperature,
Battery Voltage.
Error codes are 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.