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XIV. Description of OPS System
OPS System
（
For hydraulic electronic shifting truck only
）
The OPS (Operator Presence Sensing) System is developed to assure the safety
and prevent the operators from travelling or handling operation when the operator is not
seated or not in the proper position, helping to decrease or prevent the accidents due to
the maloperation.
Engine Stalling.
If the driver leaves the seat or the seatbelt is unfastened (if seat pressure switch is
applied on the seat) or the parking brake is not applied, the buzzer will alarm.
If there is no seat pressure switch input, when the driver sits correctly or applies the
parking brake, the alerting alarm stops.
If there is seat pressure switch input, when the driver sits correctly and fastens the seatbelt
or applies the parking brake, the alerting alarm stops.
Engine Running
1.
Start the engine
When the gear switch is in the neutral position and the driver sits correctly with the
buckle of seatbelt well put in the receptacle, or applies the parking brake, the engine is
able to start. If the gear switch is not in the neutral position, there is no starting signal
output.
Warning
If a forklift truck is parking in a slope, it‘s necessary to apply the brake pedal before
starting in case of slipping.
2. Forward or Reverse Protection
After the engine has started, shift the gear switch to first gear of forward or reverse,
the vehicle is able to start. If the gear switch is shifted to second gear of forward or reverse,
the neutral indicator light flashes and the vehicle cannot start. The forward or reverse
power can recover if the gear switch hangs in neutral switch.
If the driver leaves the seat or unfastens the seatbelt (if seat pressure switch is
applied) over 3 seconds in the process of travelling, the buzzer will alarm and the neutral
indicator flashes and OPS lights are on and the truck stops automatically.
If the driver returns and sits correctly, the alerting alarm stops and OPS light turns off.
The neutral indicator light is normally on when the gear switch is in the neutral position.
When gear switch hangs in the forward or reverse gear, the vehicle recovers travelling.
Caution
There is no ― ‖OPS light on the instrument for some truck models.
For trucks mounted with seat applied with the seat pressure switch, it‘s required that the
driver sits correctly and then put the buckle of the seatbelt into the receptacle. Note if the
sequence is not followed, the truck will not start.
The gear switch is set in the neutral place by default in the procedure, neutral indicator
light flashing reminds the driver to hangs the gear switch in the neutral position.
Warning
If the OPS is activated by abnormal operation when a forklift truck is travelling in a slope,
the power supply will be cut off which leads to the slipping on a slope. To avoid this kind of
accident, the driver must operate the truck in a proper position.
3. Working Device Protection
