Dual Capacity Sensors - JLG 400S Service And Maintenance Manual

SECTION 4 - BOOM & PLATFORM
DUAL CAPACITY SENSORS - 400S ONLY
The Dual Capacity selection and indicator system consists of a
capacity mode toggle switch on platform control box, a set of
fly boom proximity sensors and a main angle boom sensor.
The system prevents the platform from entering the unre-
stricted 600 lbs (272 kg) zone if the restricted 1000 lbs (454 kg)
mode is selected. The dual capacity sensors are located on the
right side of main boom as shown in Figure 4-6.
Unrestricted capacity 600 lbs (272 kg):
The Sensor 1 (left proximity sensor, refer Figure 4-4.) is nor-
mally open sensor which is closed in unrestricted capacity
condition. LED for Sensor 1 is ON in this mode.
The Sensor 2 (right proximity sensor, refer Figure 4-4.) is nor-
mally closed sensor which is open in unrestricted capacity
condition. LED for Sensor 2 is OFF in this mode.
• The Machine Control Unit will allow the platform to go any-
where in the working envelope. The unrestricted capacity
working envelope is shown in Figure 4-4.
NOTE: In Unrestricted capacity zone, Using Analyzer under DIAG-
NOSTICS/SYSTEM, CAPACITY SW 1 will read OPEN and
CAPACITY SW 2 will read OPEN.
4-6
Restricted Capacity 1000 lbs (454 kg):
The Sensor 1 (left proximity sensor, refer Figure 4-4.) is nor-
mally open sensor in unrestricted capacity condition. LED for
Sensor 1 is OFF in this mode.
The Sensor 2 (right proximity sensor, refer Figure 4-4.) is nor-
mally closed sensor in unrestricted capacity condition. LED for
Sensor 2 is OFF in this mode.
• The Machine Control Unit will not allow the platform to go
beyond boundaries of the restricted zone. It will allow
retraction of the fly boom or lifting up of the main boom.
The restricted capacity envelope is shown in Figure 4-4.
NOTE: In Restricted capacity zone, Using Analyzer under DIAG-
Figure 4-4. Dual Capacity Sensors
NOSTICS/SYSTEM, CAPACITY SW 1 will read OPEN and
CAPACITY SW 2 will read OPEN.
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