2.4 | Tractor / Electrohydraulic Compatibility

COMMAND can make use of either in-built rear tractor electrohydraulic valves, commonly referred to as SCVs (Selectable Control Valves) or auxiliary remotes, or externally mounted electrohydraulic valves.

For each valve type, COMMAND is able to provide two raise and lower functions for automatic control of function 1 (e.g. height) and function 2 (e.g. cross-slope / tilt). For CANBUS based valve types, any available SCVs/Remotes will be available for selection.

For proportional solenoid, Analog Voltage (0-5V) and Danfoss PVE types, the number of selectable outputs is limited to the number of available physical outputs on the ECU suitable for analog voltage laser inputs or external EH valves.

Valve Interface	Description	Suitable example tractors/valves
JD CAN	COMMAND can communicate directly with John Deere SCVs over CANBUS, sending flow requests that will be enacted by the John Deere tractor hydraulic system.	Most modern John Deere tractors, e.g. 8R, 8RT, 9R, 9RT, 9RX.
Proportional Solenoid

COMMAND can provide closed-loop PWM signals suitable for controlling external proportional solenoid valves requiring maximum flow current of less than 2 Amps. Scraper systems using external proportional solenoid valves such as Eaton Vickers, Rexroth or Hydac. J1939 COMMAND can communicate directly with the T3RRA VM or other compatible hydraulic controllers using the J1939 messaging standard. Tractor/scraperChallenger systemstracked requiringmachines manual controlsbeyondFendt whatSCR/S4/MT Using the Fendt SCV adapter, COMMAND ECUcan communicate directly with Fendt SCVs over CANBUS, sending flow requests that will be enacted by the tractor hydraulic system. Fendt SCR, S4 and MT models where the SCV control bus is capableseparated offrom providing.the ISOBUS. Fendt ONE COMMAND can communicate directly with Fendt SCVs over CANBUS, sending flow requests that will be enacted by the tractor hydraulic system. Fendt Gen 7 / ONE tractor models Analog Voltage (0-5V) Using the T3H-V001 legacy analog output adapter, COMMAND can provide 0-5V analog voltage signals suitable for John Deere legacy proportional SCV controller or Case IH / New Holland 0-5V EHR controller inputs. Case 0-5V EHR inputs or John Deere legacy proportional laser inputs or Case 0-5V EHR inputs. FendtProportional SCR/S4/MTSolenoid Using the Fendt SCV adapter, COMMAND can communicateprovide directlyclosed-loop withPWM Fendtsignals SCVssuitable overfor CANBUS,controlling sendingexternal proportional solenoid valves requiring maximum flow requestscurrent thatof willless bethan enacted2 by the tractor hydraulic system.Amps. FendtScraper SCR,systems S4using andexternal MTproportional modelssolenoid wherevalves thesuch SCVas controlEaton busVickers, isRexroth separatedor from the ISOBUS.Hydac. Danfoss PVE Using the T3H-V001 and T3H-V adapters, COMMAND can provide 0-Vs ratiometric voltage signals suitable for controlling external Danfoss PVEM, PVEA, PVEH and PVES valves. Scraper systems using external closed-loop proportional valves such as Danfoss PVEM, PVEA, PVEH or PVES.