Telescope Retracted Sensors - JLG 400S Service And Maintenance Manual

TELESCOPE RETRACTED SENSORS

The Telescope Retracted Sensors measures boom length to
control drive speed and the oscillating axle. The two proximity
sensors are used as a safety measure in case one sensor fails.
The telescope retracted sensors are mounted on the left side
of main boom as shown in Figure 4-3.
In transport:
The Sensor 1 (left proximity sensor, refer Figure 4-1.) is nor-
mally open sensor which is closed in transport condition. LED
for Sensor 1 is ON in transport condition.
The Sensor 2 (right proximity sensor, refer Figure 4-1.) is nor-
mally closed sensor which is open in transport condition. LED
for Sensor 2 is OFF in transport condition.
• The telescope retracted sensors measure the fly boom
extension is less than 12 in. (30.5 cm), drive speed and
oscillating axle are not affected.
NOTE: In Transport condition, Using Analyzer under DIAGNOS-
TICS/SYSTEM, TELE RETRAC SW 1 will read CLOSED and
TELE RETRAC SW 2 will read CLOSED.
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Out of transport:
The Sensor 1 (left proximity sensor, refer Figure 4-1.) is nor-
mally open sensor in out of transport condition. LED for Sen-
sor 1 is OFF when out of transport condition.
The Sensor 2 (right proximity sensor, refer Figure 4-1.) is nor-
mally closed sensor in out of transport condition. LED for Sen-
sor 2 is ON when out of transport condition.
• The telescope retracted sensors measure the fly boom
NOTE: In Out Of Transport condition, Using Analyzer under DIAG-
Figure 4-1. Telescope Retracted Sensors
SECTION 4 - BOOM & PLATFORM
extension is more than 12 in. (30.5 cm), drive speed is
reduced and oscillating axle is locked.
NOSTICS/SYSTEM, TELE RETRAC SW 1 will read OPEN and
TELE RETRAC SW 2 will read OPEN.
4-3