GREER Company MicroGuard RCI 514, Руководство оператора

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5
OUTLINE OF OPERATION
BOOM ANGLE SENSOR
Boom angle is measured by a potentiometer/pendulum assembly. It provides a voltage proportional
to boom angle. The boom angle sensor is mounted inside the cable reeling drum assembly.
EXTENSION SENSOR
The extension sensor provides an increasing voltage proportional to the extension of the boom. A
cable attached to the boom head provides a low current electrical path for the A2B signal. The
extension sensor is mounted inside the cable reeling drum assembly.
PRESSURE SENSORS
There are two pressure sensors which measure pressure in the boom hoist cylinder. One sensor
for the rod-side pressure and one sensor for the piston-side pressure.
ANTI TWO BLOCK (A2B)
A switch monitors the approach of the hookblock or overhaul ball to the boom head. The switch is
held in the normal position until the hookblock or overhaul ball raises a weight that is mounted
around the hoist rope. When the weight is raised it operates the switch. The resultant signal is sent
to the computer via the reeling drum causing an A2B alarm and function kick-out to occur.
FUNCTION KICK-OUT
Electrically-operated hydraulic solenoids disconnect the control lever functions for boom hoist lower,
telescope out, and winch up when an overload or A2B alarm condition occurs.
OPERATOR PROGRAMMABLE ALARMS
These alarms, when properly set by the operator, define the operating range:
- Minimum and maximum angle
- Maximum height and/or maximum length.
These alarms are programmable for each job site and allow the operator to work in a defined area.
AREA ALARM
This alarm permits the operator to define the operating zone by only two set points. The use of this
method results clearly defines the operating zone.