Logic Elements (Rexroth - BOSCH). - Directional Control Function , Control Cover. - Type : LFA. - Nominal Size NS 25. - EWB : With Electrical Monitoring Of The Closed Position For Mounting Directional Valve .

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User Library
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Logic Elements (Rexroth - BOSCH). - Directional Control Function , Control Cover. - Type : LFA. - Nominal Size NS 25. - EWB : With Electrical Monitoring Of The Closed Position For Mounting Directional Valve .
Configuration Name:
ALLEN BOLT M6x10
Part Number:
LFA_25_EWB-7X-CB20D
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Modified on: August 16,2026  
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Specifications
Supplier part number: LFA_25_EWB-7X-CB20D
Name:Logic Elements (Rexroth - BOSCH). - Directional Control Function , Control Cover. - Type : LFA. - Nominal Size NS 25. - EWB : With Electrical Monitoring Of The Closed Position For Mounting Directional Valve .
Description:The LFA..EWB control cover is designed for directional control functions and is prepared for mounting a pilot control valve, such as a 4WE 6 directional spool valve or an M-3SEW 6 directional seat valve . It is a control cover with electrical monitoring of the closed position, providing a reliable feedback signal for the machine control system. 🔧 Function and Design The LFA..EWB control cover is part of the LC/LFA cartridge valve system and serves as the "brain" that dictates the behavior of the logic element . Key aspects of its design and function include: Electrical Spool Position Monitoring: The E designation indicates that the cover is equipped with a contactless inductive position switch (type QM or Q6) . This switch directly monitors the main spool's closed position and provides a short-circuit-proof binary signal (PNP output, 24 V DC) for the machine control, confirming when the valve is safely in its closed state . Mounting for Pilot Directional Valve: The "WB" variant signifies it is prepared for the setup of a pilot control valve. A standard directional spool valve, such as a 4WE 6 D…, or a directional seat valve like the M-3SEW 6 …, can be mounted directly onto the control cover . Pilot Control: The mounted pilot valve controls the flow of pilot oil to the main cartridge valve. By selecting different pilot valves, the logic element can be configured for various directional control functions. Factory-Calibrated Unit: The cartridge element and the control cover form a calibrated functional unit and must not be disassembled or combined with other components . Electrical Connection: The position switch connects via a 4-pole M12 x 1 connector (ordered separately) . 📋 Key Technical Specifications (NS 25) The following specifications apply to the LFA25EWB variant. Specification Detail Type LFA..EWB (Control Cover) Function Directional Control, with electrical closed-position monitoring and mounting for a directional pilot valve No
    
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