Features:
- Current acquisition: eight inputs accept 0–20 mA or 4–20 mA signals.
- Transmitter operation: each channel can power and monitor a two-wire transmitter.
- Intrinsic-safety interface: protection components are built into each channel.
AI890 3BSC690071R1 brings several process-current loops into an S800 station while keeping their measurements as individual input channels.
The channel can work with an externally powered source or supply a suitable two-wire transmitter. Loop design therefore starts with how the field device receives its power, not just its signal range.
The built-in components provide the field-side intrinsic-safety interface. They do not remove the need for an approved Ex loop design and the appropriate termination unit.
Apter Power supplies the ABB AI890 3BSC690071R1 Analog Input IS 8 ch module for S800 process-current installations.
ABB AI890 3BSC690071R1 Analog Input IS 8 ch Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- TU890 is the compact termination unit for Ex field applications.
- TU891 is the compact termination unit for non-Ex applications.
- These MTUs provide two-wire process-device connections without additional terminals.
- The input stages receive their power through conversion of the external 24 V supply.
- With an externally powered transmitter, the current-input path has a typical 3 V drop including its PTC.
- For a module-powered transmitter, at least 15 V is available at a 20 mA loop current.
- Transmitter power is current-limited to 23 mA under overload; this is a protection limit, not an additional measurement range.
- Front indicators distinguish Fault, Run and Warning states.
- Internal process-supply supervision reports supply-related trouble at the module.
- Module Error, Module Warning and Channel Error indications separate module-wide status from individual-channel status.
- S800 current-input stations receiving single-ended, unipolar 0–20 mA or 4–20 mA signals.
- Powering and monitoring Ex-certified two-wire process transmitters in an approved intrinsically safe loop.
- Measurement of externally powered current sources with the appropriate Ex or non-Ex termination arrangement.