Z 1500/2000 Ma With Analog Auto Tilt - Zepro Z 1500 Technical Manual

Functional descriptions and schematics
3.3

Z 1500/2000 MA with analog auto tilt

3.3.1 Description
The Z 1500/2000 MA with analog auto tilt is a variant with double acting tilt cylinders and single acting lift
cylinders. It is equipped with a quick opening valve that increases the opening speed of the platform. It is also
equipped with analog auto tilt functionality with angle setting which allows the user to manually set the auto
tilt angle that the platform returns to during the auto tilt motion.
Sensors used
Inclinometer-type angle sensor located on the platform used both for the two hand safety requirement and for
the advanced auto tilt functionality. The sensor ouputs an analog signal between 0 and 4,5V depending on its
angle and is connected to the Ai1 input on the ZePRO1 card.
Pressure sensor located on the positive hydraulic feed to the tilt cylinder used to activate the open platform
alarm. The sensor is active when the pressure drops below 60 bar which enables the Pa+ and Pa- pins on cabin
switch section of the control card. This sensor is connected to Di4 on the ZePRO1 card.
Pressure sensor located on the positive hydraulic feed to the lift cylinder. The sensor is used to sense when the
platform reaches the ground level at which point the auto tilt down function is activated. The sensor is activated
when the pressure in the hydraulic line drops below 2,5 bar. This sensor is connected to Di5 on the ZePRO1 card.
The Di1 input is bridged to sensor power for this configuration.
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