Zapi ZAPIMOS H2B, Руководство пользователя

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Page 8/60 H2B USER'S MANUAL - 550145G
2.3 PROTECTION FEATURES
- Battery inversions:
It is necessary to respect the connections indicated in the diagrams in order to avoid
damage to the power unit. In the lifting versions, a general contactor may be connected
which is handled by the logic against any polarity inversions.
The logic is intrinsically protected against polarity inversions.
- Connection errors:
All the inputs are protected against connection errors.
The contactors do not accept loads greater than 3 amp, and are in any case protected
against overloads and short circuits.
- Thermal protection:
If the temperature exceeds 80°C, the maximum current is reduced in proportion to the
thermal increase. The temperature may never exceed 85°C.
- Low battery charge:
When the battery charge is low, the maximum current is reduced by 50%, and in the
lifting version all functions except hydrodrive (and descent) are blocked.
This feature may be excluded by the console.
- External agents:
The chopper body is completely sealed, and thus is protected against splashes of
liquid (IP54).
- Protection against accidental start-up:
A precise sequence of operations is necessary for starting the machine.
If these operations are not carried out correctly, the machine will not start.
The request for running must be activated after the key and handle microswitch (or seat
microswitch).
- Protection against uncontrolled movements:
The contactors do not close if:
- the power unit is not functioning
- the accelerator does not go below the minimum value stored increased by 2 V
- the logic is not perfectly functional
- one running microswitch is stuck.