Improved Efficient Operation Hour - Toyota 7FBEF 15 Service Manual

1-6

3. Improved Efficient Operation Hour

The accelerator-off regeneration system is added to the AC drive system for longer operation
compared to the previous models. The power up function is also adopted for longer efficiency
operation hours.
Power keep function
(Setting to the P mode at the Efficiency-preference and the S mode for Operation-hour-preference)
The power keep function has been developed as the new control in new models for maintaining the
discharged battery performance by making use of the wider motor control range of the AC motor drive
system.
• The efficiency operation hours allowing operation without feeling performance degradation
is improved by 40% by adoption of the power keep function and extension of the operation
hours.
• The number of operation cycles without feeling performance degradation is also improved by
40%.
This new function actually improves the operation efficiency at each customer greatly.
Full load performance
1.1
1
0.9
Decrease in
performance
0.8
0.7
0%
However, note that efficient operation becomes hard when the battery level indicated by the battery
charge indicator becomes one bar (battery discharge to about 90%).
Previous model
20% 40%
Previous model (1.5t)
Efficiency operation hour:2H20m
(440AH/5hr)
40%UP
Previous model (1.5t:S mode)
Efficiency operation hour:3H20m
(440AH/5hr)
1.5 ton
min
350
7FBEF15
S mode
(DIN 5PzS550L)
Low remaining battery charge warning
New model
25%UP
60% 80%
52% UP
17% UP
270
230
7FBEF15 5FBE15
S mode
(DIN 4PzS440L)
Battery usage
limit range
Lift interruption
100%
Battery discharge level (%)