Proportional Directional Valve 4WRLF27E600LJ-4X/MXY00/24ND90 - Bosch Rexroth R901550569

A press or test rig axis that takes its setpoints from a higher level controller needs no extra controller module in the cabinet once the electronics sit inside the valve. This pilot-operated size 27 proportional directional valve carries integrated fieldbus electronics and controls 600 l/min nominal flow at operating pressures up to 270 bar.

Benefits

• Fieldbus electronics inside the valve - setpoint, enable and feedback all run through the 7-pole connector (6 + PE) to EN 175201-804, so no separate controller card is needed in the cabinet.
• 600 l/min nominal flow with up to 1850 l/min maximum flow covers fast rapid strokes of large cylinders.
• Enable acknowledgment - the controller is told that the output stage is active before the axis starts to move.
• Internal spool position feedback keeps the spool position traceable even when the load changes.
• Separated pilot circuit - external pilot oil supply and external pilot oil return keep pilot pressure independent of the working pressure of up to 270 bar.
• Standard ISO 4401-08-08-0-05 interface for subplate mounting, 20.78 kg valve weight for sizing the support.

Application

Typical installations are large presses, injection moulding machines and test benches where the axis receives its setpoint over a fieldbus from a higher level controller. Size 27 is chosen when 600 l/min is required and cycle time depends on how fast the cylinder accelerates. NBR seals and HL hydraulic fluid assume a standard industrial hydraulic circuit.

Manufacturer

Bosch Rexroth, product family 4WRLF, material number R901550569. Quote this material number for any enquiry or repeat order, because one type code can cover several versions.