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MAIN CONTROLLER
Fail-Safe System
Output Power Control at Low Battery
Voltage
(1) Battery discharge characteristic
The BDI table shows the BDI indicator patterns on
the display and the corresponding voltage ranges.
BDI Table
BDI #
Normal BDI
0
- 45.9
1
46.0 - 46.4
2
46.5 - 46.9
3
47.0 - 47.4
4
47.5 - 47.9
5
48.0 - 48.4
6
48.5 - 48.9
7
49.0 - 49.3
8
49.4 - 49.7
9
49.8 - 50.1
10
50.2 -
!
WARNING
The forklift truck can move suddenly. Injury to
personnel or damage to the forklift truck is
possible. Safely lift the drive wheels off the
floor. Put blocks of wood under the frame so
that both drive wheels are free to turn.
(2) Output power control
When the BDI indicator shows zero, the following
output power control is activated.
(3) Output limit control
(a) When the BDI display shows zero level, the
following limit control is activated. When this
happens, the Battery LED on the display
lights.
Drive motors — The output power is controlled
according to the powering characteristic. See page
1-7.
Tubular BDI
- 46.9
47.0 - 47.3
47.4 - 47.7
47.8 - 48.1
48.2 - 48.5
48.6 - 48.9
49.0 - 49.2
49.3 - 49.5
49.6 - 49.8
49.9 - 50.1
50.2 -
1-16
The battery mode shows "0".
Pump motor — In the MC and FC models, the
output duty reduces by 50% in lifting and
attachment operations.
Tilt operations do not change the output duty.
Simultaneous operations — Cargo handling
operations cannot be conducted unless the vehicle
is stationary and the direction lever is in the neutral
position.
(b) When the battery voltage momentary becomes
higher than 22 V and less than 25 V, the
following limit control is activated. When this
happens, the Battery LED on the display
flashes.
Drive motors — The output power is controlled
according to the powering characteristic.
• In the 48-V vehicle, the brake limit mode is
activated.
(Brake limit mode: Drive motor power is
controlled while the brake pedal is depressed.
See page 1-7.)
Pump motor — No output limit control is provided.
(c) When the battery voltage momentary becomes
lower than 22 V, the line contactor turns OFF.
When this happens, the Battery LED on the
display lights and the "Lo" indicator flashes.
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