Groundsmaster 4300--D Page 5 -- 11 Electrical System
TEC Controller Logic Chart
Each line of the following chart identifies the necessary
component position (INPUTS) in order for the TEC con-
troller to energize the appropriate OUTPUTS for ma-
chine operation.
Example: To start the engine with no operator in the
seat, when the ignition key is in start, the traction pedal
is in neutral and the parking brake is applied, the glow
plugs and other necessary engine starting components
will be energized.
X
INPUTS
MACHINE FUNCTION
Preheat
Start (No Operator in Seat)
Start (Operator in Seat)
Run (No Operator in Seat)
Run (Operator in Seat)
Lower Cutting Units to Ground
Mow (C.U. on Ground)
Raise (from Mow to Turn Around Position)
Lower/Mow (from Turn Around Position)
Raise (to Transport Position)
Diagnostic Light Fault Retrieval
Clearing Faults (From Retrieval Mode)
Ignition Key in RUN
Ignition Key in START
Traction Pedal in NEUTRAL
Seat Occupied
Parking Brake Applied
Normal Coolant Temperature
Joystick Pulled to Rear (Raise)
Joystick Pushed Forward (Lower/Raise)
PTOSwitchinON
Mow speed limiter in MOW
OUTPUTS
Lift Manifold S1 Energized
Lift Manifold S2 Energized
Lift Manifold PRV Energized
Deck Manifold PRV2 (Front Decks) Energized
Deck Manifold PRV1 (Rear Decks) Energized
Engine Run Solenoid Hold Coil Energized
Engine Start (Run Solenoid and Start Solenoid Energized)
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
XX
X
XX
XX XX
XXXX
XX XXX
X
X
X
P
Engine Glow Plugs Energized
P
PP
P
P
P
PP
P
P
P
PPP
P
P
P
P
P
P
P
X
P
Component (Input) Position
Not Relevent for Function
Component (Output) Energized
KEY TO CHART
X
P
P
P
P
X
NOTE: ForStartmachine function, thejoystick mustbe
in the neutral (center) position and the PTO switch must
be OFF.
NOTE: When the Lower/Mow machine function is
completed, the front cutting decks engage while lower-
ing to the ground followed shortly by the rear cutting
decksengagingwhileloweringto the ground. The timing
of this sequence is provided by the TEC controller.
NOTE: The Diagnostic Light Fault Retrieval ma-
chine function requires that the seat be unoccupied, the
mow speed limiter be in the TRANSPORT position, the
PTO switch be OFF and the cutting decks be in the low-
ered, mow position.
Electrical
System
