Overview; Main System Components; Display; Angle Sensor - GKD 1H Series Installation Manual

1

OVERVIEW

The Series 1-H is a height limiting system intended for use on excavators, loaders, teletrucks
or similar type machines.
The system monitors the angle of the primary boom or arm and compares this angle against
a previously stored limit, set by the machine operator. When the boom is lifted to the point
where the boom angle approaches the stored "limit" angle, an internal relay is switched
within the display and the state of the relay output from the display switches. If this output
is connected to an external sounder, the sounder will alarm at the height limit. If this output
is connected to a solenoid valve controlling the boom lift function the boom lift function
will be cut, preventing movement beyond the height limit. The boom lower function is still
active, allowing boom movement back to a safe position.
Because the Series 1-H system references the boom position against gravity rather than
against the machine base, machine base gradient is automatically compensated for in
operation.

2 MAIN SYSTEM COMPONENTS

2.1

Display

The display is mounted in the machine cab at the operator station, in a position easily
accessible by the machine operator. The display has a flying lead, which supplies power to
the system and includes the
relay outputs used to activate an external sounder and / or a motion cut valve. The display
also has a 12mm CAN bus connection, which is connected to the angle sensor mounted on
the machine boom.
2.2

Angle Sensor

The angle sensor used in this system is a gravity referenced angle sensor, called a GRAVITY V.
In all installations, the angle sensor should be mounted on the first Boom of the machine.
For more information, please see page 8.
www.gkdtechnologies.com 4
M1000005 V1.5 - 11/2021