EHH-AMP-702-A-1-21 by Vickers

The EHH-AMP-702-A-1-21 accessory is produced by Vickers within the Vickers Accessories series. It is an electronic interface module for industrial automation that accepts a dedicated supply voltage and converts low-level command inputs into controlled power for connected loads. By combining signal discrimination with a sealed housing, the part allows controllers to actuate field devices without exposing sensitive electronics to harsh industrial conditions, and it mates directly with the ISO 4400 (DIN 43650) connector format commonly used on solenoid-based equipment. This arrangement supports compact installation where connector-mounted electronics are preferred over a separate external interface box.

The module operates from a nominal supply of 24 VDC and presents an input resistance of 2.4 k? to the driving controller, so voltage-mode sources remain lightly loaded. Internally, it shapes the reference signal into a proportional output, delivering a continuous load current of 2 A while allowing brief peaks up to 2.1 A. Logic discrimination uses two fixed thresholds: the output switches on when the command exceeds 13 VDC and turns off once the level falls below 6 VDC. With ripple limited to 10 percent peak to peak and a maximum switching frequency of 5 Hz, the device provides stable current for slowly modulated actuators.

The housing meets IP67 ingress protection, allowing temporary immersion without affecting operation. The permitted ambient range spans from -20 °C to +70 °C, covering most factory and mobile equipment climates. Reverse-polarity protection is absent, so wiring must maintain the correct supply orientation. Direct mounting keeps the assembly compact at the connection point and reduces the need for a separate enclosure in the wiring path.