Standard Control Module
The Groundsmaster 3280−D and Groundsmaster 3320
are equipped with a Standard Control Module to monitor
and control electrical components required for safe op-
eration. This Module is located under the control panel
(Fig. 19).
Control Module Outputs (Fig. 20)
The Start output LED should be illuminated when the
ignition key switch is in the START position with the trac-
tion pedal in neutral, the P.T.O. switch off and either the
seat occupied or parking brake engaged.
Inputs from the ignition, neutral, parking brake, P.T.O.,
seat, temperature sender and high temperature shut-
down switches are monitored by the Module. Current
output to the P.T.O. (electric clutch), electric starter mo-
tor and engine components (fuel pump, diesel engine
run solenoid and gasoline engine ignition) are controlled
based on the inputs received by the Module.
The Run output LED should be illuminated when the
ignition key switch is in the ON position and inputs from
the neutral, parking brake, P.T.O., seat and over temper-
ature switches indicate safe engine operation (e.g. seat
occupied and parking brake disengaged when traction
pedal is depressed).
The P.T.O. output LED should be illuminated when the
ignition key switch is in the ON position and the P.T.O.
switch is pulled out. Note: If Module Over Temperature
Warning input LED is illuminated, P.T.O. output LED will
not be illuminated and P.T.O. will not be engaged regard-
less of P.T.O. switch position.
The Standard Control Module does not connect to an
external computer or hand held device, can not be re−
programmed and does not record intermittent fault data.
The Standard Control Module can be used to check op-
eration of machine switches by monitoring the Module
LEDs. If a Module LED does not illuminate (e.g. the in
seat input LED does not illuminate with the seat occu-
pied and the ignition switch in the ON position), testing
of the switch and circuit wiring would be required.
1
2
Refer to the Traction Unit Operator’s Manual for addi-
tional Standard Control Module information.
Control Module Inputs (Fig. 20)
The Power input LED should be illuminated when the
ignition key switch is in the ON or START position.
Figure 19
The Start input LED should be illuminated when the igni-
tion key switch is in the START position.
1.
Standard Control Module
2.
Fuse block
The Neutral input LED should be illuminated when the
traction pedal is in the neutral position.
12
5
The Parking Brake Off input LED should be illuminated
when the parking brake is not engaged.
11
10
4
9
3
2
The P.T.O. Switch input LED should be illuminated when
the P.T.O. switch is engaged (pulled out).
8
The In Seat input LED should be illuminated when the
operator is sitting in the seat.
7
6
1
The Over Temperature Shutdown input LED should be
illuminated when excessive engine coolant temperature
causes the high temperature shutdown switch to close.
Figure 20
1.
Power input LED
Start input LED
7.
8.
Park brake off input LED
PTO switch input LED
In seat input LED
10. Temp shutdn input LED
11. Temp warning input LED
12. Backlap input LED
2.
3.
4.
5.
6.
Engine run output LED
Start output LED
9.
The Over Temperature Warning input LED should be il-
luminated when the temperature sender has reduced
resistance due to high engine coolant temperature.
PTO output LED
Neutral input LED
The Backlap input LED is not used on the Groundsmas-
ter 3280−D or 3320.
Electrical System
Page 6 − 16
Groundsmaster 3280−D/3320
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