JLG X23J - X700AJ Service Manual - Manual (Page 521)

SECTION 6 - JLG CONTROL SYSTEM
6-32 – JLG Lift – 3121448
ESSICAE B
ON
The aerial part safety devices are deactivated by the key switch (emergency
condition) – Line B of the aerial part safety bypass button is closed
OFF
The aerial part safety devices are active (normal operating condition) – Line B of
the aerial part safety bypass button is open
ESSICCA A
ON
The undercarriage safety devices are deactivated by the key switch (emergency
condition) – Line A of the undercarriage safety bypass button is closed
OFF
The undercarriage safety devices are active (normal operating condition) – Line
A of the undercarriage safety bypass button is open
ESSICCA B
ON
The undercarriage safety devices are deactivated by the key switch (emergency
condition) – Line B of the undercarriage safety bypass button is closed
OFF
The undercarriage safety devices are active (normal operating condition) – Line
B of the undercarriage safety bypass button is open
EM A GND
ON
The emergency stop on the ground is released – Line A of the emergency stop
button is closed
OFF
The emergency stop on the ground is pressed – Line A of the emergency stop
button is open
EM B GND
ON
The emergency stop on the ground is released – Line B of the emergency stop
button is closed
OFF
The emergency stop on the ground is pressed – Line B of the emergency stop
button is open
FOTO A
ON
Photocell A receives the signal from the retroreflector (aerial part closed and
aligned)
OFF
Photocell A doesn’t receive the signal from the retroreflector (aerial part open)
FOTO B
ON
Photocell B receives the signal from the retroreflector (aerial part closed and
aligned)
OFF
Photocell B doesn’t receive the signal from the retroreflector (aerial part open)
PROXPOS.IBR
ON
The aerial part does not have the first arm in area of impact with the engine (X17J
only)
OFF
The aerial part has the first arm in area of impact with the engine (X17J only)
POSCILIND
ON
The first arm is not sufficiently open to avoid impact with the engine and the
control switch is pressed (X17J only)
OFF
The first arm is sufficiently open to avoid impact with the engine and the control
switch is released (X17J only)
ST12 CLOSED
ON
The contact on the pressure switch for stabilisers 1 and 2 closes – The stabilisers
are at the end of travel and the maximum pressure valve is open
OFF
The contact on the pressure switch for stabilisers 1 and 2 is open – The
stabilisers are open, partially open or already closed
ST34 CLOSED
ON
The contact on the pressure switch for stabilisers 3 and 4 closes – The stabilisers
are at the end of travel and the maximum pressure valve is open
OFF
The contact on the pressure switch for stabilisers 3 and 4 is open – The
stabilisers are open, partially open or already closed
TEMP ALRM A Option
reserved for certain
markets
ON
The external temperature probe has measured a critical value – Line A of the
temperature probe is closed
OFF
The external temperature probe has not measured a critical value – Line A of the
temperature probe is open
TEMP ALRM B Option
reserved for certain
markets
ON
The external temperature probe has measured a critical value – Line B of the
temperature probe is closed
OFF
The external temperature probe has not measured a critical value – Line B of the
temperature probe is open
X17J