JLG TOUCAN 861 Service Manual page 24

III-2
3.2 Ope ra ting princ iple s of sa fe ty
fe a ture s
Mast sensor (SW2)
Made of 2 normally closed (NC) contacts, it disables
the 2nd and 3rd gears (slope and high speed) and
enables the tilt sensor.
The contacts open as soon as the mast leaves its
lowered position.
Tilt sensor
The sensor's output signal (+ battery) is cancelled
when the machine is tilted above the maximum
authorized value.
A tilt causes (if the mast has left its lowered position):
- A light and acoustic alarm to sound on the
upper electrical box.
- all movements to be disabled.
The reset button must be depressed before the pedal
is activated to restore the movements.
NOTE
The alarm remains activated as long as the
machine is tilted above its authorised limit.
The tilt sensor supplies the incline system (SW15)
and (SW16) through diode (D10) in order to reduce its
sensitiv ity to bumps (due to it s int egrated
temporisation).
Incline sensors (SW15) et (SW16)
Both sensors (SW15) and (SW16) are integrated to
the tilt sensor, and work on the same principle, but
limited however to a longitudinal axis (detection limited
to front / rear detection).
Opening of one of these contacts is caused by an
excessive pitch and disables the 3rd drive gear (high
speed). It can be reactivated if the pitch has become
acceptable again by resetting the system (release
and depress the pedal again).
The relays (K3) and (K4) manage the information from
the sensors (SW15) and (SW16) and ensure:
- a temporisation on start up (to absorb the
acceleration at the start of the drive movement):
(K3).
- memorisation of the sensors opening: (K4).
Suppression of 3rd gear availability is signalled by an
orange light indicator on the platform control panel.
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BREAKDOWN
Slack chain sensors (SW11) (SW12)
(SW13) and (SW14)
Made of normally closed (NC) contacts, they stop
the mast and jib from lowering in case of a slack
chain.
Battery discharge indicator
It is located in the upper electrical box.
All movements are disabled when the indicator reaches
its cut-out threshhold.
The reset button, if activated BEFORE the pedal,
enables the operator to get to the charging station.
The indicator cut-out is signalled by the alternate
flashing of the last 2 red leds.
Toucan 861
III-2
Models
Updated 04-06