H2B USER'S MANUAL - 550145G Page 9/60
2.4 PERFORMANCE FEATURES
- Optimum sensitivity to low speeds.
- Self-diagnosis with indication of the type of anomaly by an optional LED.
- Configurable from the console (traction or lifting).
- Modification of parameters from the console.
- Internal hour-meter with values that can be displayed on the console.
- Memorisation of the last 5 alarms tripped, with relative hour-meter value and tempera-
ture that can be displayed on the console.
- Console tester for real time checking of the main parameters such as inputs, motor
voltage, battery, etc.
- Absence of arc on the contactors
- Internal arc suppressor of the contactors coils.
- High motor and battery efficiency thanks to high frequency commutation.
2.5 H2B CHOPPER DIAGNOSIS
The microprocessor carries out diagnostic procedures on the main chopper functions,
involving 4 basic points.
1) Diagnosis on key start-up which includes: watchdog test, current sensor test, VMN test,
contactor pilot test, test for running request present, high accelerator test.
2) Standby diagnosis which includes: watchdog test, VMN test, contactor pilot test, cur-
rent sensor test.
3) Diagnosis while running which includes: watchdog test, VMN test, current test, contac-
tor test, VMN test in complete conduction, contactor opening-closing test.
4) Continuous diagnosis: temperature check, battery charge check.
The diagnostic message is indicated by a certain number of blinks of the LED connected
to connector A.
The current alarm message code can be displayed on the programming console.
A description of the alarm codes, possible causes and solutions is given for each configu-
ration in the following sections.
2.6 THERMAL CONSIDERATIONS
- The heat generated by the control unit must be dissipated. For this to be possible, the
compartment must be ventilated and the cooling surfaces ample.
- The cooling system is dimensioned on the basis of the performance required of the
machine.
For situations in which ventilation is poor and heat exchange difficult because of the
materials used, we suggest to use forced air ventilation.
- The power dissipated by the module varies depending on the current and the work
cycle.
To Next Page
Loading...
Need help?
General