Model 9600/9700 Swing-Reach ® Lift Truck

loss of power to the system. The only way to change it is by another input. This input can only be initiated by crossing another set of magnets or by traveling and turning the steering more than 10°. This allows the truck to power down inside the aisle and remember that it is in an In-Aisle-Sta te when powered back up. System operation is not changed upon aisle entry. When the truck is exiting an aisle and each sensor is activated by magnets, the truck plugs to reduce speed until the speed is reached that is stored in the Configuration Menu. Once this speed is reached, tr avel speed is limited by the TM to the speed programmed in the Configuration Menu until the control handle is returned to neutral and travel is requested again. During the plugging sequence, the operator can override the plugging strength with a request for a more aggressive plug from the control handle.

Height Calculation

Main Height Sensing

The TM calculates main mast height that is calibrated when the mast telescopic transitions the Main Lift Ref Prox. Th is is done by using the Main Lift Height Encode r pulses. As the encoder is rotated, it produces two square wave voltages 90° out of phase with each other (quadrature phase) and are used to determine the rate, direction, and height of the platform. Lift decelerates as the plat form approaches full elevated height. Lower decelerates as the platform approaches the fully lowered position. The calculated lift height is stored in the TM when the key is turned OFF. The TM combines the height of the main and mini-masts and updates the display with the actual height of the forks. If a height error is detected, lower decelerates when the Lift Reference Prox is crossed.

Mini Height Sensing

The TM calculates mini-mast height based on pulse counts communicated via BUS1 from the CM. The CM monitors the Mini Height Prox that detects the holes in the sensing rail as it passes over it. When fully lowered, all three channels

Publication: 1089040, Issued: 08 Apr 2016