Proportional Directional Valve 4WRZE25W9-325-7X/6EG24N9ETK31/F1D3V - Bosch Rexroth R901266631

When a signal cable fails, the control should notice before the axis stops. The 4WRZE25W9-325-7X/6EG24N9ETK31/F1D3V therefore takes its command value as 4 to 20 mA while controlling 325 l/min nominal flow at up to 870 l/min maximum flow.

Benefits

• Command value 4 to 20 mA, a missing signal is distinguishable from a valid zero.
• 325 l/min nominal flow, 870 l/min maximum flow.
• Internal pilot oil supply plus internal return, a leaner manifold.
• Symbol W9 with a pressure reducing valve in the pilot stage, 350 bar operating pressure.
• FKM seals, connection diagram ISO 4401-08-08-0-05, UKCA evidence SI2016/1091.
• 20.85 kg, concealed manual override for commissioning.

Applications

The version makes sense in plants with safety requirements on signal monitoring, for example presses running an automatic cycle. A current loop lets the control tell a cable fault from a zero command value straight away.

Manufacturer

Bosch Rexroth, material number R901266631, product family 4WRZ(E). The F1D3V suffix in the type code identifies the signal type of the on-board electronics. Characteristic curves and installation dimensions are in data sheet RE 29115 and RE 07600-B.