Zapi ACE2 User Manual

AF2ZP0CL - ACE2 - User Manual Page - 17/85
4.3 Protection and safety features
4.3.1 Protection features
The ACE-2 is protected against some controller injuries and malfunctions:
- 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 controller temperature exceeds 85 °C, the maximum current is reduced
in proportion to the thermal increase. The temperature can never exceed 105
°C.
- External agents
The inverter is protected against dust and the spray of liquid to a degree of
protection meeting IP65.
- Protection against uncontrolled movements
The main contactor will not close if:
- The Power unit is not functioning.
- The Logic is not functioning perfectly.
- The output voltage of the accelerator does not fall below the minimum
voltage value stored, with 1 V added.
- Running microswitch in closed position.
- Low battery charge
When the battery charge is low, the maximum current is reduced to the half
of the maximum current programmed.
- Protection against accidental Start up
A precise sequence of operations are necessary before the machine will
start.
Operation cannot begin if these operations are not carried out correctly.
Requests for drive, must be made after closing the key switch.
4.3.2 Safety Features
U ZAPI controllers are designed according to the prEN954-1 specifications for
safety related parts of control system and to UNI EN1175-1 norm. The
safety of the machine is strongly related to installation; length, layout and
screening of electrical connections have to be carefully designed.
ZAPI is always available to cooperate with the customer in order to evaluate
installation and connection solutions. Furthermore, ZAPI is available to
develop new SW or HW solutions to improve the safety of the machine,
according to customer requirements.
Machine manufacturer holds the responsibility for the truck safety features
and related approval.
ACE-2 inverter electronic implements an hardware safety circuit, which is able to
open the Line Contactor (LC) and the Electric Brake (EB) - and therefore to cut
the power line stopping the machine via HARDWARE, that is bypassing the
software control of the LC and EB. This safety circuit is driven by "SAFETY"
input. If safety input is connected to -BATT, the "SAFETY" circuit is inactive; if the
input is open, the "SAFETY" circuit becomes active and, within a timeout, it is
able to open the drivers of LC coil and EB coil. The safety circuit is also
periodically checked by the ACE-2 microcontroller; if the microcontroller detects a

Zapi ACE2 Specifications

General

Brand	Zapi
Model	ACE2
Category	Inverter
Language	English