Introduction - Zapi ACE2 User Manual

1 INTRODUCTION

Within the ZAPIMOS family, the ACE-2 inverter (E stands for evolution) is the
model suitable for control of 4.0 kW to 9.0 kW motors. It has been expressly
designed for battery electric traction.
It is fit for electric truck, material handling: order pickers, reach truck, CB 2,0 tons,
tractors, boom lift and scissors lift.
The ACE-2 can be supplied in three versions:
1) Sensored version: using an Encoder (Sensor Bearing) in the Motor axle is
realised an extremely precise and reliable motor speed and torque control
2) SenseCoils version: using special auxiliary windings inside the motor instead
of an encoder is realised the motor speed and torque control.
3) Sensorless version: using only the phase voltage feedback is implemented
the motor speed and torque control with the Zapi patented sensor-less
control software.
Here the Sensored Version is descripted: it adopts an Encoder integrated in the
Ball Bearing (Sensor Bearing). The Encoder fills up the truck performance,
respect to the Sensorless and Sense Coils versions, with lower minimum speed,
the "stop on the ramp" service and a smoother inversion; on the other hand the
reliability gets penalized by the fragile mechanics and inaccessible position of the
Sensor Bearing.
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