Alternator Output Current Sensor; Engine Speed Sensor; Rbs Engine/Generator Controller - JLG E600 Service And Maintenance Manual

SECTION 3 - CHASSIS & TURNTABLE
engine. The signal is also used in determining if the air
glow plug should be energized.
The engine oil temperature sensor is connected to the
engine/generator controller at pins J2-8 and J2-19.
The engine oil temperature sensor is located on the left
side of the engine.

Alternator Output Current Sensor

The alternator output current sensor provides a signal pro-
portional to the output current of the alternator to the
engine/generator controller. The output current is regu-
lated at 45ADC.
The alternator output current sensor is connected to the
engine/generator controller at pins J2-21, J2-31 and J2-
32.
The alternator output current sensor is located inside the
rear cover of the alternator.

Engine Speed Sensor

The engine speed sensor provides a signal proportional
to the rotational speed of the engine to the engine/genera-
tor controller. This signal is used by the engine/generator
controller to determine starter cut-out, overspeed fault and
underspeed fault. If the signal is not present at the engine/
generator controller, the unit will fault with a loss of speed
signal indication.
The engine speed sensor is connected to the engine/gen-
erator controller at pins J2-9, J2-15 and J2-20.
The engine speed sensor is located inside the recoil
starter cover at the front of the engine.
3-64

RBS Engine/Generator Controller

The control system enclosure houses the RBS engine/
generator controller, which performs all control tasks
associated with the RBS.
The engine/generator controller interface is via a J2 35-pin
connector.
Table 3-7. Controller Interface Pin Assignments
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
– JLG Lift –
FUNCTION
System 48VDC
System 0V DC
Fuel solenoid
Starter Solenoid
Manual call to start
Low oil pressure
Not used
Engine oil temperature
Speed sensing input
RS-232 +12V
RXD
TXD
LED Driver GND
LED Driver +48V
Speed sensor GND
Not used
Not used
- Output voltage
Engine oil temperature/ambient temp. + 8V
Speed Sensing + 8V
Output current sensor (GND)
Not used
RS-232 GND
- Field drive
+ Start battery
- Start battery
Pre-heat
Inhibit run
Engine temp. switch
+ Output voltage
Speed sensing + 5V
Output current sense
Not used
Not used
Field Drive
3121813