Description
General Information
表格
| Item | Specification |
|---|---|
| Part Number | DSAI146, 3BSE007949R1 |
| Manufacturer | ABB |
| Product Family | Advant Master DCS System |
| Product Type | Analog Input Module |
| Installation | Plug‑in eurocard for Advant Master rack |
| Power Supply | Powered via rack backplane |
| Lifecycle Status | Obsolete / End‑of‑Life. OEM manufacturing discontinued. Only new‑old‑stock, refurbished and field‑pulled used maintenance spare parts available; no brand‑new factory‑built units can be ordered. |
| ESD Handling Requirement | Analog signal acquisition electronics assembly; anti‑static wrist‑strap and anti‑static workstation required for installation and replacement operations. |
Electrical & Interface Specifications
- Backplane Interface: Gold‑plated eurocard edge connector, communicates with Advant Master rack internal control bus.
- Field Terminals: Screw‑type terminal blocks for field analog sensor wiring.
- Channel Configuration: 8‑channel galvanically‑isolated analog differential inputs.
- Input Signal Types: Configurable for voltage (±10 V, 0‑10 V) and current (4‑20 mA, 0‑20 mA).
- Resolution: 16‑bit A/D conversion.
- Accuracy: ±0.1 % of full scale.
- Isolation: Reinforced galvanic isolation between field side and internal logic circuit.
- On‑Board Circuitry: Signal conditioning circuit, anti‑aliasing filter circuit, A/D conversion circuit, module self‑diagnosis circuit, multi‑channel LED status indicators.
- Power Consumption: Typical 5.0 W.
- Operation Limitation: Cannot operate standalone. Must be installed inside Advant Master rack and work with matching CPU main‑board.
- Compatibility Matrix
‑ Compatible System: ABB Advant Master DCS
‑ Mounting: Standard eurocard slot of Advant Master rack
‑ Hot‑swap: Not supported; rack power shall be fully cut off before module replacement.
Environmental Specifications
表格
| Item | Value |
|---|---|
| Operating Temperature | ‑20 °C ~ +60 °C inside control cabinet |
| Storage / Transport Temperature | ‑40 °C ~ +85 °C for long‑term spare‑part preservation |
| Relative Humidity | 5 %‑95 % RH, non‑condensing; avoid condensation to prevent circuit corrosion. |
| Compliance Standard | CE certification, complies with industrial EMC requirements. |
| Protection Class | IP00 printed‑circuit assembly; used inside protected cabinet only. |
| Dimension | Standard Advant Master eurocard form‑factor |
| Net Weight | Approx. 0.40 kg |
| Vibration Resistance | Complies with IEC 60068‑2‑6 industrial cabinet vibration criteria. |
Main Functions
- DSAI146 (3BSE007949R1) is plug‑in analog input eurocard module for ABB Advant Master DCS system. It converts field analog sensor signals into digital data and transmits to main controller.
- Collects process analog signals including pressure, flow, liquid level and temperature transmitters with 4‑20 mA or voltage output. Each channel adopts galvanic isolation to restrain industrial‑site electromagnetic interference.
- Built‑in hardware signal filtering improves signal stability. Front‑panel LED indicators display module power, fault and channel status for on‑site inspection and troubleshooting. Comprehensive self‑diagnosis feeds module abnormal status back to DCS host.
- Typical field failure symptoms
‑ No valid analog reading from field transmitter
‑ Drifting or unstable measured value
‑ Module communication failure with rack backplane bus
‑ Individual channel damage caused by field over‑voltage surge
Common root causes: field transmitter power supply anomaly, field surge voltage damaging analog input channels, poor backplane‑connector contact, dust and moisture contamination on circuit board, component ageing.
- Pure maintenance‑oriented spare‑part component, only for repair and replacement of existing legacy Advant Master installations; not suitable for new‑project engineering deployment.
Typical Applications
- Spare‑part replacement for DSAI146 analog input module (3BSE007949R1) inside Advant Master rack.
- Troubleshooting scenarios: process analog signal acquisition failure, measuring value drift, module bus‑communication breakdown.
- Preventive‑maintenance spare‑part inventory for power, chemical and pulp‑paper sites equipped with Advant Master DCS system.
- Hardware refurbishment for decommissioned Advant Master assemblies.
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