National Crane 01-22-2019 Control # 051-08 7-7
1300A OUTRIGGERS
OUTRIGGER MONITORING SYSTEM (OMS)
(OPTIONAL—STANDARD IN NORTH
AMERICA)
The Outrigger Monitoring System (OMS) aids the operator in
accurately programming the Rated Capacity Limiter (RCL)
by automatically identifying the position of each outrigger
beam. The OMS uses four sensors, one sensor in each
outrigger beam, to identify if an outrigger beam is positioned
to one of three predefined locations, including fully retracted,
mid-extend, and fully extended.
String Potentiometer
Remove
1. Fully retract outrigger beam.
2. Remove outrigger box cover (1, Figure 7-8).
3. Disconnect spring clip (2, Figure 7-8) from its attaching
point on outrigger beam.
4. Disconnect electrical connector (3, Figure 7-8) at string
potentiometer (4).
5. Remove the screws (5, Figure 7-8) securing string
potentiometer; remove string potentiometer.
Install
1. Fully retract outrigger.
2. Using screws (5, Figure 7-8), mount the string
potentiometer (4) to the outrigger box cover (1).
3. Connect electrical connector (3, Figure 7-8) to string
potentiometer (4).
4. Attach spring clip (2, Figure 7-8) to attaching point on
outrigger beam.
5. Mount outrigger box cover (1, Figure 7-8) on outrigger
box.
6. Calibrate string potentiometer; refer to Calibrate,
page 7-7.
Calibrate
Calibrating the string potentiometer is done through the
crane's RCL. Refer to the Rated Capacity Limiter Operator
Manual for detailed instructions.
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