ABB Measurement & Analytics Microprocessor-ControlledElectronic Unit EBN853

The EBN853 is a microprocessor-controlled electronic unit for continuous positioning of ABB Contrac RHD and RSD actuators, designed for field mounting with an IP66 and NEMA 4X-rated housing. It operates on single-phase 115 V AC or 230 V AC, 47.5 to 63 Hz, and supports analog control via 0/4 to 20 mA signals with 3 digital inputs and 3 relay outputs. Digital communication is available via RS232, HART, and PROFIBUS DP/DPV1. The unit features programmable torque and speed characteristics, fail-safe functions, and non-volatile parameter storage. It has a weight of 11 kg (24 lbs), operates in ambient temperatures from −25 to 55 °C, and meets corrosion protection standards C5-I per DIN EN 15714. Motor and signal connections use screw terminals and plug connectors, with a maximum cable length of 100 m.