2-4
MOTORS
Drive motor
■
General
1. A compact, high-performance, maintenance-free AC induction motor optimum for battery forklift trucks
has been newly developed as the drive motor.
2. The motor is maintenance-free because it has no brush.
■ Specifications
■
Drive motor features
The induction motor (see the figure below) developed for the new models this time has the following
features:
• The drive unit is integrated with the motor (built-in structure) to attain a compact size.
• The iron core shape and winding are optimized for motor efficiency improvement.
• A high-precision rpm sensor for direct detection of the motor speed is adopted to realize elaborate
functions such as power select and power keep.
• A motor temperature sensor is adopted to ensure stabilized output and to prevent burning due to
overloaded use.
■ Caution
Depending on the use at each customer (continuous heavy-load operation for example), the vehicle
performance may temporarily be dropped to protect the controller and motor from overheating. This is due
to restriction of the current to the motor as a result of specified temperature detection by the temperature
sensor built in the controller or the motor. This is not an abnormality. Since the respective warning appears
on the monitoring display, stop the operation and restart after the warning indication disappears.
Vehicle model
Voltage
(V)
Rated output
(kW)
(60-min rating)
Type
Size
Diameter × Length
mm (in)
Mass
kg (lb)
7FBEF15 to 20 48 4.9 3-phase AC φ180 (7.1) × 227 (8.9) 37 (82)
Field winding
Field core
Drive unit
Length
Diameter
Rotor
Rpm sensor bearing
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