User manual

Page - 20/89 AE9ZP0BD - DUALAC2/&HP/POWER - User Manual
the logic unit must be set in the correct way by Zapi.
4.2.6 Main contactor and key connection
- The connection of the main contactor can be carried out following the
drawing in the figure.
- The connection of the battery line switches must be carried out following
ZAPI instructions.
- If a mechanical battery line switch is installed, it is necessary that the key
supply to the inverter is open together with power battery line; if not, the
inverter may be damaged if the switch is opened during a regenerative
braking.
- An intrinsic protection is present inside the logic when the voltage on the
battery power connection overtakes 40% more than the battery nominal
voltage or if the key is switched off before the battery power line is
disconnected.
4.2.7 Insulation of truck frame
U As stated by EN-1175 “Safety of machinery – Industrial truck”, chapter 5.7,
“there shall be no electrical connection to the truck frame”. So the truck
frame has to be isolated from any electrical potential of the truck power
line.
4.3 Protection and safety features
4.3.1 Protection features
- Battery polarity inversion
It is necessary to fit a MAIN CONTACTOR to protect the inverter against
reverse battery polarity and for safety reasons.
- Connection Errors:
All inputs are protected against connection errors.
- Thermal protection
If the inverter temperature exceeds 75 °C, the maximum current is reduced in
proportion to the thermal increase. The temperature can never exceed 100
°C.