Description
General Information
表格
| Item | Specification |
|---|---|
| Part Number | AI815, 3BSE052604R1 |
| Manufacturer | ABB |
| Product Family | S800 I/O, System 800xA / AC800M DCS System |
| Product Type | 8‑Channel Analog Input Module with HART & Transmitter Power Supply |
| Installation | S800 I/O rack, DIN‑rail mounting; used with termination unit TU series |
| Power Supply | 24 VDC auxiliary power (19.2‑30 VDC) via S800 ModuleBus backplane |
| Lifecycle Status | Active product; full spare‑part and technical support available. |
| ESD Handling Requirement | Mixed‑signal analog module, anti‑static wrist‑strap and anti‑static workstation required during installation and replacement. |
Electrical & Interface Specifications
- Backplane Interface: S800 ModuleBus connector, for controller communication and module power supply.
- Field Signal Interface: Connect via matched termination unit (TU810 / TU812 / TU814 / TU818 / TU830 / TU833 / TU835 / TU838) to field transmitters/sensors.
- Input Channels: 8 single‑ended unipolar analog input channels, group‑wise ground isolation. Current and voltage signals cannot be mixed on one moduleABB.
- Signal Ranges:
Current: 0‑20 mA, 4‑20 mA
Voltage: 0‑5 V DC, 1‑5 V DCABB
- A‑D Resolution: 12‑bitABB
- Input Impedance: ＞10 MΩ (voltage input); 250 Ω (current input)ABB
- Transmitter Supply: Per‑channel current‑limited 24 V power for 2‑wire /3‑wire HART transmitters, power‑supply supervision function includedABB.
- Protection: Withstands ≥11 VDC over‑voltage / under‑voltage on input channels; channel‑by‑channel current‑limiting protection for transmitter power supplyABB.
- Communication: HART pass‑through supported for each channel, realize HART transmitter parameter configuration and diagnostic readingABB.
- Typical Accuracy: Max 0.1 % of full scale; temperature drift typ. 50 ppm/°C
- Update Cycle: 10 ms typical
- Power Consumption: Typical 3.0‑3.5 W
- Operation Limitation: Cannot operate standalone; must match S800 I/O rack, termination unit and AC800M controller.
- Compatibility Matrix
‑ Compatible Controller: AC800M, System 800xA DCS, Freelance DCS
‑ Matching Termination Units: TU810, TU812, TU814, TU818, TU830, TU833, TU835, TU838
‑ Hot‑swap supported: module can be replaced online without system shutdown.
Environmental Specifications
表格
| Item | Value |
|---|---|
| Operating Temperature | 0 °C ~ +55 °C standard; ‑25 °C ~ +70 °C extended range |
| Storage / Transport Temperature | ‑40 °C ~ +85 °C |
| Relative Humidity | 5‑95 % RH, non‑condensing |
| Compliance & Certifications | CE, EN 61010‑1, UL 61010‑1, RoHS compliant |
| Protection Class | IP20 (module); IP00 internal circuit |
| Dimension | 119 mm × 45 mm × 102 mm (H×W×D) |
| Net Weight | Approx. 0.20 kg |
| Conformal Coating | Optional G3 conformal coating for harsh industrial environment. |
| Vibration Resistance | Complies with IEC 60068‑2‑6 industrial cabinet vibration standard. |
Main Functions
- AI815 is S800 I/O series 8‑channel unipolar analog input module, specially designed for HART smart transmitters. It collects 4‑20 mA / 0‑5 V /1‑5 V field analog signals for 800xA / AC800M DCS systemABB.
- Built‑in per‑channel limited‑current 24 V transmitter power supply, directly feeds 2‑wire HART transmitters without external auxiliary power supply; supply loop monitoring provides power‑supply fault diagnosisABB.
- Group‑wise galvanic isolation protects system internal circuits from field‑side surge and interference. Supports HART transparent pass‑through, realizing remote parameter setting and diagnostic data reading for HART instrumentsABB.
- Comprehensive channel‑level diagnostics: wire‑break detection, over‑range / under‑range monitoring, transmitter power supply fault, module hardware self‑test; fault status uploaded to controller via ModuleBus and displayed on HMI for maintenance.
- Supports hot‑swap, online module replacement without stopping system operation, reduces plant downtime. Applicable for high‑availability process control scenarios.
- Typical field failure symptoms: partial / full channel signal loss, signal drift, transmitter power supply failure, HART communication interruption, module diagnostic alarm.
Common root causes: field‑loop wiring fault, transmitter failure, termination‑unit contact oxidation, on‑board analog component ageing.
Typical Applications
- Process signal acquisition for petroleum‑chemical, power‑plant, pulp‑paper industries with large amount of HART smart transmitters under ABB 800xA / AC800M DCS system.
- Spare‑part replacement for existing S800 I/O station.
- Preventive‑maintenance spare‑part inventory for ABB DCS system.
- DCS system retrofit and expansion project.
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