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Wiring Schematics and Diagrams
Logic Chart
Each line on the Logic Chart shows the combination of
switch conditions that must be made for the listed action
to occur. Example - START, under ACTIONS: For the
engine to start the Key Switch must be moved to Start
(making terminals B + I + S) and the hydraulic pump
must be in Neutral (neutral switch CLOSED).
KEY
O
⊗
levent
Switch Closed
Switch Open
Switch Closed Momentarily
Switch Conditon Not Re
SWITCHES
Start - Key Switch B + I + S
Run - Key Switch B + I + A / X + Y
Neutral Switch (HJ3000 only)
Oil Pressure Switch
Water Pressure Switch
Pump Start Limit Switch
Lift Limit Switch
Transport Switch (HJ3000 only)
Aerator Start (Engage) Switch
Aerator Stop (Disengage) Switch
Lift Switch UP (HJ3000 only)
Lift Switch DOWN (HJ3000 only)
Brake Switch
Accumulator Charge Switch
ACTIONS
1. Start X X
2. Run X X
3. Machine Lower (aerate position) X X O X
4. Aerate
(see Controller Timing below)
Machine Moving (out of neutral) X X X X
⊗
X X
Machine Stationary (neutral) X X X X X X
5. Machine Raise (transport position) X X O
Controller Timing
Aerate START-UP Sequence
1. Pump clutch engages immediately.
2. Valve clutch engages 5 seconds after pump clutch engages.
Aerate SHUT-DOWN Sequence (Neutral Delay)
1. Pump clutch disengages and green light goes off 4 seconds after transport switch opens (red light goes off).
2. After another 3 seconds, valve clutch will disengage.
NOTE: Keeping aerate start (engage) switch pushed in (closed) will keep green light on and override neutral delay
shut-down.
Aerate SHUT-DOWN Sequence (Disengage Delay)
1. Pump clutch disengages and green light goes off immediately when stop (disengage) switch is pushed in (opens)
or if pump start limit switch or water pressure switch opens (yellow light goes off).
2. After another 3 seconds, valve clutch will disengage.
Wiring Schematics and Diagrams Page 5 - 2
Rev. B
HydroJect 3000
