ABB AO845AKey features
Multi-channel configuration: supports 8 independent isolated output channels, each channel can be configured as current or voltage mode.
Strong anti-interference ability: ABB AO845A isolation voltage between channels and the system side is up to 1500V AC.
Modular design: compatible with ABB AC800M controller, supports hot plugging and online maintenance, and reduces downtime.
Diagnosis and safety: ABB AO845A with disconnection detection, over-limit alarm, real-time monitoring of module status, and supports rapid fault location.
Alternative models
AO801: Provides 8 channels of current output, suitable for applications with low output accuracy requirements.
AO820: Provides bipolar voltage output, suitable for applications that require voltage signal output.
Typical cooperation cases
Nordic offshore oil platform: ABB AO845A is used in the Norwegian Equinor project to control subsea valves, withstand high humidity and salt spray corrosion environments, and communicate with the upper system via Modbus TCP.
US shale gas production: In a natural gas processing plant in Texas, it drives the compressor speed control system to adapt to the drastic temperature difference from -40°C to +50°C.
Middle East refinery: ABB AO845A is deployed in Saudi Aramco's refining unit and integrated into ABB 800xA DCS via PROFIBUS DP to achieve precise control of reactor pressure.
