Toro Greensmaster eTriFlex 3360 Service Manual page 197

Identifying the Relays and their Functions
Greensmaster® eTriFlex 3360 and 3370
19239SL Rev B
g291276
1. Logic relay
2. Brake actuator relay
The relays are located under the right side cover:
•
The logic relay is a 4 terminal relay with a 12V coil.
•
The brake actuator relay is a 5 terminal relay with a 12V coil.
•
The engine relay (model 04580) is a 5 terminal relay with a 12V coil.
•
The shutdown delay relay (model 04590) is a 4 terminal relay with a 48V coil.
Note: Refer to the Electrical Schematics and Wire Harnesses in
(page A–1) for additional relay circuit information.
Logic Relay When energized by the T1: primary controller, the logic relay
provides 48V power to the logic circuits of all of the 48 volt controllers (T2 – T6
and SC2 – SC8). T1 and SC1 operate on 12V logic power.
Brake Actuator Relay When energized by the T1: primary controller, the brake
actuator relay supplies 12V power to the electric brake actuator to retract. The
automatic parking brake disengages when the brake actuator retracts.
Engine Relay (Model 04580) When energized by the T1: primary controller, the
engine relay opens the path to ground which allows the engine ignition circuit to
function. When de-energized, the engine relay closes the path to ground which
interrupts the engine ignition circuit and stops the engine.
Figure 84
eTriFlex 3370 Model 04590
3. Shutdown delay relay (model 04590)
Page 5–93 Electrical System: Testing the Electrical Components
Appendix A