Motors; Drive Motor; Drive Motor Features - Toyota 7FBEF 15 Service Manual

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MOTORS

Drive motor

I 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.
I Specifications
Vehicle model
7FBEF15 to 20
I 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.
I 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.
Drive unit
Rated output
Voltage
(kW)
(V)
(60-min rating)
48 4.9
Diameter
Diameter × Length
Type
φ180 (7.1) × 227 (8.9)
3-phase AC
Length
Field core
Field winding
Rpm sensor bearing
Rotor
Size
Mass
kg (lb)
mm (in)
37 (82)