Zapi COMBI AC1 Instrukcja Użytkownika Pobierz pdf (Strona 10)

Page - 10/73 AESZP0BA – AC1 SSL SENSORED - FREE VERSION - User Manual

4 PROTECTION FEATURES

The AC1 is protected against some controller injuries and mulfunctions. These

are:

1) Battery polarity inversion

It is necessary to fit a MAIN CONTACTOR to cut off the Battery Positive

connection to protect the inverter against reverse battery polarity.

2) Connection Errors

All inputs are protected against connection errors.

3) Thermal protection

If the chopper temperature exceeds 90°C at 24V or 78°C at 48V, the

maximum current is reduced in proportion to the thermal increase. The cut off

temperature is 110°C at 24V or 103°C at 48V for the encoder release and

85° for the sense coils release.

4) External agents

The inverter is protected against dust and the spray of liquid to a degree of

protection meeting IP54.

5) Low battery charge

In the encoder release, when the battery charge is low, the maximum speed

is reduced to the 25% of the maximum programmed. The Lifting Operation

inhibited.

6) Protection against accidental Start up

A precise sequence of operations are necessary before the machine will

start.

The truck does not move if these operations are not carried out correctly.

Requests for drive, must be made after closing the key switch.

7) Protection against uncontrolled movements

If the main contactor is opened, it never closes if:

- The Power unit is not functioning.

- The Logic is not functioning perfectly.

- The output voltage of the accelerator does not fall below a threshold is

1V higher than the minimum voltage value stored with the PROGRAM

VACC operation.

- A microswitch for a moving request in closed position.

An important improvement against the uncontrolled movements is given by

the Passive Emergency Cell (see paragraph 5.1 below).

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Zapi COMBI AC1 Instrukcja Użytkownika Strona 10