Mobile machines such as municipal vehicles, cranes, and tractors require robust and precise control solutions. The electrohydraulic actuator (EHA) from Thomas was developed precisely for these demanding requirements and combines several components in a compact, highly integrated system: Two proportional pressure reducing valves, powerful control electronics, and redundant Hall sensors are all housed together in a single aluminum die-cast housing.
The integrated sensor technology enables precise control and monitoring of the main slide position in the customer’s system. The system is complemented by convenient fault diagnostics and flexible, customizable software that allows rapid integration into a wide range of applications. The new white paper presents Thomas‘ electrohydraulic actuator (EHA), which meets safety requirements up to Performance Level PL=d in accordance with DIN EN ISO 13849, offering a reliable, flexible, and safe solution for modern machine control:
whitepaper
EHA 2.0 Fail-Safe
How an EHA 2.0 Fail-Safe works
The actuator is made up of two proportional pressure reducing valves (Fail-Safe valves) manufactured by Thomas, fitted inside an aluminum die-cast housing together with a control board and redundant position sensors. Several of these actuators can later be mounted directly in the hydraulic pilot circuit of a customer system and connected electrically with the cable harness. The vehicle’s controller communicates with the units via a CAN bus signal. When the operator moves the joystick, the actuator controls the customer system via the two valves.
Further information about the EHA 2.0 Fail-Safe:
DATASHEET & MORE
Infografic
EMA and EHA for hydraulic Systems
More details about the comparison can be found here:
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