GREER COMPANY 1918 EAST GLENWOOD PLACE, SANTA ANA, CA 92705 PN W450250 Rev A 06/01/00
TEREX RCI 510 RATED CAPACITY INDICATOR OPERATOR'S MANUAL TEL:(714) 259-9702 FAX:(714) 259-7626
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MicroGuard
®
Display Unit
MicroGuard
®
Computer Unit
Pressure Transducers
Extension Reel with length and angle sensors
Anti 2-Block (ATB) switches
Cables
Installation/Operator Manuals
The MicroGuard
®
TEREX
RCI 510
System is intended
to aid the crane operator by continuously monitoring
the load and warning of an approach to an overload
or Two-Block condition. Crane functions are
monitored by means of high accuracy sensors. The
system continuously compares the load suspended
below the boom head with the crane capacity chart
stored in the computer memory. At approach to
overload, the system warns by means of audible and
visual alarms. The system can be configured to cause
function kick-out by sending a signal to function
disconnect solenoids.
The operator is provided with a continuous display of:
Rated Load
Actual Load
Bar Graph showing Percentage of Rated Load
Radius of the Load
Boom Angle
Main Boom Length
Working Area
Crane Configuration
On-screen messages provide the operator with visual
warnings of conditions that occur during operation of
the system.
Boom angle is measured by means of a high-
accuracy potentiometer/pendulum assembly that is
damped to prevent overswing. It provides a voltage
proportional to boom angle. The boom angle sensor is
mounted inside the cable extension reel assembly.
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
Two pressure transducers measure the pressure in
the boom hoist cylinder. The resultant Total Moment
signal is processed to provide a continuous display of
the load suspended below the point of lift.
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 causes the switch
to operate. The resultant signal is sent to the
computer via the extension reel causing the A2B
alarm to operate and function kick-out to occur.
Electrically operated solenoids disconnect the control
lever functions for boom hoist lower, telescope out,
and winch up whenever an overload or an A2B
condition occurs.
These alarms, when properly set by the operator,
define the operating range. This is achieved by
means of minimum and maximum angle, maximum
height, and/or maximum length. These alarms can be
programmed for each job site and allow the operator
to work in a defined area.
When set, this alarm permits the operator to define
the operating zone by only two set points. The use
of this method of setting results in a greatly enhanced
working area, and also clearly defines the
operating zone.
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