Axial Piston Variable Pump A7VO - Group VH A/S

Blocked for new applications / Für Neuanwendung gesperrt14/32 Bosch Rexroth AG A7VO RE 92 202/03.06HD Hydraulic Control, Pilot Pressure RelatedHD.G Hydraulic control, for pressure cut-off,remote controlledA sequence valve with port plate takes over the function of thepressure cut-off. The valve is mounted separate from the pump,and the simple piping length should not exceed 5 m. Highpressure is supplied from the pump to the valve via port A 1 .The control pressure of the pump is directed to the valve viathe port X 3 and led into the tank at port A located on the portplate of the sequence valve. In this case the pump is regulatedto V g min in case of access of the set-point pressure value.Setting range for pressure control _____________ 50 – 315 barWhen ordering, state in clear text the setting of the pressurecontrol.Note:– The port A of the sequence valve must be connected back totank (cooler).– Any pressure relief valve included in the circuit to limit themax. pressure must be set to a cracking pressure at least 20bar above the pressure control setting.The sequence valve and port plate must be ordered separately.Sequence valve: DZ5DP2-1X/315XYMSO20(Mat.No. R900490554)Port plate: G 115/1 (Mat.No. R900424379)Characteristic HD.GOperating pressure pB in barSetting range31550maxminmax. 10 barCircuit diagram HD.GURX1V g maxV g minPosition (1) is not included in the pump supply.Y3B (A)NoteThe spring centering in the pilot control unit is not asafety deviceThrough contamination in the control unit – e.g. in hydraulicfluid, wear particles, or particles out of a system – the valvespool can get stuck in an undefined position. In this case, thepump flow does not follow the command inputs of the machineoperator anymore.– Make sure that a proper emergency shut down functioncan bring the driven machine movements to a safe positionimmediately (e.g. stop).– Adhere to the speci fi ed cleanliness level 20/18/15 (90 °C) to ISO 4406.A1X3S(1)PXAFlow q v in L/min