MG586 Introduction 3 W450030A 09/09
The &RPSXWHU provides all of the functions necessary to read the system sensors, process
computations, and control the disconnect functions. Information dening the physical
characteristics of the crane has been loaded during factory setup to reliably calculate crane
parameters, such as load rated capacity, and interpret the crane capability chart and conguration
numbers.
The ([WHQVLRQ5HHOmeasures the extended length of the telescoping sections of the boom and
enables calculation of crane radius, load weight, and percent of rated capacity. The reel-o cable
provides a path from the boom head to the computer via the extension reel computer cable. This
path is used to signal a possible two-block condition. The boom angle sensor measures the angle of
the boom.
The 5HHO2II&DEOH provides a path from boom head, to the computer by way of the extension reel
cable. This path is used to send a two-block signal to the computer.
The operator’s 'LVSOD\&RQVROH translates data received from the computer and displays the actual
load weight and percent of rated capability in the display windows. Visual and audible warning
alarms activate when capability limits are approaching or exceeded, or when a two-block condition is
encountered.
The $QWL7ZR%ORFN6ZLWFK$VVHPEO\ consists of the switch without the lockout pin, and the
chain and weight assembly. The anti-two-block switch provides data to the computer which is
transmitted to the operator’s display through electrical cables. Visual and audible warning alarms
activate when a two-block condition is encountered.
Two +\GUDXOLF3UHVVXUHsensors, housed within the computer assembly, measure the pressure in
both sides of the boom hoist cylinder. Other system sensors, mounted elsewhere on the crane, are
connected to the computer via electrical cables.
W450030r2 03/16
