JLG X20JP - X600AJ Service Manual - Manual (Page 245)

SECTION 6 - JLG CONTROL SYSTEM
3121623 – JLG Lift – 6-29
ST4 OPEN B
ON Do not consider
OFF Do not consider
BYPASAE A
ON
The aerial part safeties are disconnected through the key button (emergency
condition) – “A” line of the aerial part safeties by-pass button is closed.
OFF
The aerial part safeties are connected (normal working condition) – “A” line of the
aerial part safeties by-pass button is opened
BYPASAE B
ON
The aerial part safeties are disconnected through the key button (emergency
condition) – “B” line of the aerial part safeties by-pass button is closed.
OFF
The aerial part safeties are connected (normal working condition) – “B” line of the
aerial part safeties by-pass button is opened
BYPASCB A
ON
The ground part safeties are disconnected through the key button (emergency
condition)– “A” line of the ground part safeties by-pass button is closed.
OFF
The ground part safeties are connected (normal working condition) – “A” line of the
ground part safeties by-pass button is opened
BYPASCB B
ON
The ground part safeties are disconnected through the key button (emergency
condition)– “B” line of the ground part safeties by-pass button is closed.
OFF
The ground part safeties are connected (normal working condition) – “B” line of the
ground part safeties by-pass button is opened
EM GRND A
ON
Emergency stop on the ground is released –“A” line of the emergency stop is
closed
OFF
Emergency stop on the ground is pressed – “A” line of the emergency stop is
opened
EM GRND B
ON
Emergency stop on the ground is released –“B” line of the emergency stop is
closed
OFF
Emergency stop on the ground is pressed – “B” line of the emergency stop is
opened
FOTO A
ON Photocell A receives the signal from the reflector (Aerial part closed and aligned)
OFF Photocell A does not receive the signal from the reflector (Aerial part opened)
FOTO B
ON Photocell B receives the signal from the reflector (Aerial part closed and aligned)
OFF Photocell B does not receive the signal from the reflector (Aerial part opened)
EM.R.C.GND
ON The emergency stop on ground remote control is released.
OFF
The emergency stop on ground remote control is pressed or the ground remote
control is disconnected
PROXIMITY
ON
Turret is not almost completely rotated, contact is close, the 1 st -2 nd arm is not
above the engine
OFF
Turret is almost completely rotated, contact is open, the 1 st -2 nd arm is above the
engine
X17JP - X20JP - X500AJ - X600AJ