Pto circuit (electric pto), Ltx tractors – Cub Cadet SLTX1000 Series User Manual
Page 174
LTX Tractors
168
PTO Circuit (electric PTO)
Basic Operation: See Figure 7.38.
1.
With the key switch in any position other than OFF,
the A1 terminal supplies power to the windings of
the PTO relay and to the C-COM terminal of the
PTO switch.
2.
The PTO clutch gets power from the A1 terminal of
the key switch through the C-(N.O.) terminal of the
PTO switch when it is turned ON.
3.
The PTO clutch gets ground through the PTO relay
COM terminal via the PTO relay (N.C.) terminal
when the relay is not energized.
Safety Circuits:
There are some conditions when it is best to automati-
cally turn off the mower deck to ensure safety.
•
When the mower is put in Reverse, we want to
turn off the blades unless the RevTec (RMC)
module has been armed and engaged.
•
When the operator leaves the seat for any rea-
son, we want to turn off the blades.
NOTE: When the operator leaves the seat without
setting the park brake, the engine turns off
stopping the blades as well.
1.
The PTO clutch loses its ground when the PTO
relay is energized. See Figure 7.38.
1a.
The Yellow/black trace wire connected to the windings of the PTO relay leads to the “E-PTO” terminal on
the RMC module.
1b.
The reverse switch has (N.O.) contacts.
• A red/black trace wire leads to the “Rev.Sw” terminal on the RMC module.
1c.
When the mower is put in reverse, the switch is grounded against the hydro control rod.
1d.
This provides a ground path that passes through the RMC module from the Rev.Sw terminal to the E-
PTO terminal when the RMC module is not armed and activated.
NOTE: When the RMC module is armed and activated, Rev.Sw terminal is disconnected from the E-PTO ter-
minal inside the module.
1e.
The ground path reaches the PTO relay windings, and the PTO relay is energized when the mower is put
in reverse.
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