Link-Belt HSL-1 Guide

HSL-1 LOAD MOMENT LIMITER
ADJUSTMENT MANUAL
® Link-Belt is a registered trademark.

Perform Angle
Adjustment
Is displayed load within +10% and −0% for
loads greater than 50% of Crane Capacity?
YES
Stop, no further
action required.
NO
Check Load Cell Zero
(0.5 +/−0.02 V)
OK
NOT OK
Perform Load Cell
Zero Adjustment
Perform Self-Weight
Adjustment
Stop, no further
action required.
Introduction
This manual is provided to assist service personnel with the adjustment procedures of the HSL-1 load moment
limiter. The angle adjustment routine must be performed when the boom is installed on the crane the first time.
Follow the flow chart below to determine the actions required after completing the angle adjustment routine.
Adjustment Menu
To access the adjustment menu, a maintenance key
is required. The key switch is located under the fuse
panel access cover. The access cover is located be-
hind and to the right of the operator’s seat. Remove
the access cover and locate the key switch next to
the fuse panels. Insert the key and turn it to the on
position. Press the LML <MENU> button to access
the Adjustment Menu. Three adjustment routines are
available on the Adjustment Menu as follows:
• Angle Correction
• Self-Weight Correction
• Load Cell Zero Point Correction
Note: If after performing the adjustment and cal-
ibration routines, system accuracy is still not with-
in specification, contact a Link-Belt service repre-
sentative.

Angle Correction
1. Move the boom to a 60 degree angle and press the
<START> button.
4. Hoist the boom until the boom hoist limit system ac-
tivates. After the boom automatically stops, press
the <NEXT> button.
2. Measure the actual working radius for the selected
hook. Press the <CHANGE> button until the actual
measured working radius value is displayed. After
inputting the actual measured working radiusvalue,
press the <NEXT> button.
5. Measure the actual working radius for the selected
hook. Press the <CHANGE> button until the actual
measured working radius value is displayed. After
inputting the actual measured working radiusvalue,
press the <NEXT> button.
3. A pop-up dialogue box should appear indicating the
system is computing the angle correction. 6. The angle correction value has been adjusted.
Press the <END> button to complete the angle
correction routine.

Load Cell Zero Point Correction
This value is the actual output voltage from the load cell. This number
will vary with boom hoist rope tension. With no tension on the boom
hoist rope, this number must be 0.48 to 0.52 before pressing the start
button to begin the load cell adjustment routine.
This valueis the load cell zero point after theloadcell has been zeroed.
If this number is out of rangefrom 0.00to 0.02, load cell zero point ad-
justment isrequired.
This value is the base number for the load cell zero point. This number
does not change and should be 0.50.
This value is the correctable voltage range. This number does not
change and should be 0.20. However, the important thing is that the
“Corrected output voltage” value is 0.02 or less.
1. Set boom on the ground and lower live mast onto
cribbing or support with an assist crane until the
boom hoist rope is slack and no tension is on the
load cell. Press the <START> button.
2. Load cell zero point correction has been adjusted.
Press the <RETURN> button to complete routine.

Self-Weight Correction
1. Hoist the boom until the target angle is reached and
the Start box and correction point 6 illuminates
green. Move the boom hoist lever to neutral and
press the <START> button.
Note: If the boom overhoist prevention system
activates before the target angle is reachedand
the start box illuminates, use the boom hoist
override switch and continue to hoist the boom
until target angle and start box illuminates.
2. With the boom lower speed in the superfinemode,
lower the boom. As the boom passes each target
angle, the appropriate correction box will illuminate
green.
3. Continue to lower the boom until the End box illumi-
nates green. Move the boom hoist lever to neutral
and press the <END> button to complete the rou-
tine. Self-weight correction has been adjusted.
Note: If boom lower limit system activates due
to an out of working range radius, the routine
can be completed by pressing the end button.