Power Select Function; Features Of Ac Motor Drive System - Toyota 7FBEF 15 Service Manual

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Features of AC motor drive system

The table below shows three major features of the AC motor drive system. The AC motor drive system
has already been adopted in the industrial world by making the most of these features.
System feature
1 Simple, compact motor structure
Realization of new control by three-phase
2
AC control
3 No motor brush and contactor
It has been known to worldwide forklift engineers that the AC motor drive system, as stated above, is a
very excellent system for battery forklift trucks.
Selling points of the new models fully utilizing these features are explained below.

2. Power Select Function

The performance best matching the operator can be selected by single switch operation.
The traveling performance in loaded state is improved in new models by making the most of the
simple, compact structure of the AC motor. One switch selects any of the following modes.
• Mobility-preference mode featuring the shortest cycle time (H mode)
• Efficiency-preference mode for short cycle time and long working hours (P mode)
• Operation-hour-preference mode featuring the longest operation hours with the performance
equivalent to that of previous models (S mode)
To satisfy individual customer requirements, a power control select function is provided for setting the
traveling mode by selection from six modes including H, P and S.
The operation efficiency is greatly improved by selection of the optimum performance for each
customer need like H mode selection for a job requiring the power and performance or S mode
selection for continuous operation for many hours.
Power select function
[7FBEF15]
Cycle time
(sec/cycle)
85
90
95
[H mode]
[P mode]
Previous model
180min 220min 260min
Product feature
Realization of higher performance in the same
product size
Realization of new performance and feel thanks
to wider motor control range
Reduction of maintenance cost for motor brush
and contactor
:Fixed mode
[S mode]
300min
Operation time
(DIN 4PzS 440L)