ISO 17567:2005 pdf download.Agricultural and forestry tractors and implements- Hydraulic power beyond.
4.2 Constant-pressure closed-centre hydraulic system
On agricultural and forestry tractor systems with closed-centre hydraulic valves as defined in ISO 5598. pressure, return and drain ports are required. The schematic of Figure 2 shows one basic means for providing a hydraulic power beyond interface for a typical hydraulic motor connected to a tractor with a constant- pressure dosed-centre hydraulic system.
4.3 Load-sensing closed-centre hydraulic system
On agricultural and forestry tractor systems with load-sensing hydraulic valves, pressure, return, load signal (pressure) and drain ports are required. The schematic of Figure 3 shows one basic means for providing a hydraulic power beyond interface for a typical hydraulic motor connected to a tractor with a load-sensing hydraulic system.
The signal from the implement connected to the load signal (pressure) port must be resolved with the load signal from the tractor’s valves before being sent to the pump. This resoluhon valving or circuitry shall be provided by the tractor manufacttrer. The Implement manufacturer shall ensure that the implement’s load signal is vented when all external functions are in their hold position.
4.4 Load-sensing closed-centre hydraulic system with fixed displacement pump
The schematic of Figure 4 shows one basic means for providing a hydraulic power beyond interface for a typical hydraulic motor connected to a tractor with a load-sensing dosed-centre hydraulic system.
The signal from the implement connected to the load signal (pressure) port must be resolved with the load signal from the tractor’s valves before being sent to the pump. This resolution valving or circuitry shall be provided by the tractor manufacttwer. The implement manufacturer shall ensure that the implements load signal Is vented when all external functions are In their hold position.
On agricultural and forestry tractor systems with closed-centre hydraulic valves as defined in ISO 5598. pressure, return and drain ports are required. The schematic of Figure 2 shows one basic means for providing a hydraulic power beyond interface for a typical hydraulic motor connected to a tractor with a constant- pressure dosed-centre hydraulic system.
4.3 Load-sensing closed-centre hydraulic system
On agricultural and forestry tractor systems with load-sensing hydraulic valves, pressure, return, load signal (pressure) and drain ports are required. The schematic of Figure 3 shows one basic means for providing a hydraulic power beyond interface for a typical hydraulic motor connected to a tractor with a load-sensing hydraulic system.
The signal from the implement connected to the load signal (pressure) port must be resolved with the load signal from the tractor’s valves before being sent to the pump. This resoluhon valving or circuitry shall be provided by the tractor manufacttrer. The Implement manufacturer shall ensure that the implement’s load signal is vented when all external functions are in their hold position.
4.4 Load-sensing closed-centre hydraulic system with fixed displacement pump
The schematic of Figure 4 shows one basic means for providing a hydraulic power beyond interface for a typical hydraulic motor connected to a tractor with a load-sensing dosed-centre hydraulic system.
The signal from the implement connected to the load signal (pressure) port must be resolved with the load signal from the tractor’s valves before being sent to the pump. This resolution valving or circuitry shall be provided by the tractor manufacttwer. The implement manufacturer shall ensure that the implements load signal Is vented when all external functions are In their hold position.
