The EBS852 is a rack-mounted electronic unit for continuous control of Contrac RHD and RSD actuators, operating on 115 V AC or 230 V AC single-phase power. It features a 0/4 to 20 mA analog signal interface, RS232 communication, and optional HART® digital protocol. The unit supports torque and speed variation, programmable characteristics, and has an IP20 rating. It weighs 11 kg and is designed for vertical mounting with lateral connections. The ambient temperature range is 0 to 45 °C for rack installation, with a maximum cable length of 460 m using 2.5 mm² cable. It complies with IEC 60034-1 for S9-100% stall-proof operation and meets corrosion protection standards for category C1 environments. The unit is maintenance-free for up to 10 years under normal load.
During continuous positioning the electronic unit varies the motor torque steplessly until the actuator force and the restoring process forces are balanced. High response sensitivity and positioning accuracy ensure an excellent control quality and a long actuator life expectancy.
| ABB Measurement & Analytics | |
|---|---|
| Product Category | Power Supplies |
| Product Number | EBS852 |
| Product Name | Microprocessor-ControlledElectronic Unit |
| Type | Programmable Power Supply |
| Applications | Instrumentation |
| Operating Temperature | -30 to 85 C (-22 to 185 F) |
| DC Output Voltage | 24.0 to 60.0 volts |
