Description
General Information
表格
| Item | Specification |
|---|---|
| Part Number | DSAO110, 57120001‑AT1 |
| Manufacturer | ABB |
| Product Family | Advant Master / S100 I/O System |
| Product Type | 4‑Channel Galvanically‑Isolated Analog Output Module |
| Installation | Eurocard plug‑in module for S100 I/O rack |
| Power Supply | 24 VDC auxiliary power supply |
| 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 orderedABB Group. |
| ESD Handling Requirement | Precision analog conversion electronics; anti‑static wrist‑strap and anti‑static workstation required for installation and replacement operations. |
Electrical & Interface Specifications
- Backplane Interface: Gold‑plated eurocard edge connector, connects to S100 rack internal control bus for digital command reception and module status feedback.
- Field Output Terminals: Screw terminal block for 4 independent analog output channels.
- Output Signal Ranges: 0‑10 V voltage output; 0‑20 mA / 4‑20 mA current output, per‑channel configurable.
- Measuring Performance: Output accuracy ±0.05 % of full scale; 12‑bit D‑A conversion resolution; each channel provides galvanic isolation between field side and internal logic circuit.
- On‑Board Circuitry: Digital‑to‑analog conversion circuit, isolation barrier, output driving circuit, channel diagnosis circuit, status LED indicators.
- Power Consumption: Typical 6‑9 W.
- Operation Limitation: Cannot operate standalone. Must be inserted into ABB S100 I/O rack and work together with Advant Master controller.
- Compatibility Matrix
‑ Compatible System: ABB Advant Master DCS, S100 series I/O rack
‑ Matching Terminal Unit: DSTA160 terminal base unit
‑ Recommended replacement set: DSAO120A + DSTA171 (wiring modification required)ABB Group
‑ 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 for process‑automation environment, complies with industrial EMC requirements. RoHS‑exempt legacy componentABB Group. |
| Protection Class | IP00 printed‑circuit assembly; installed inside protected cabinet. |
| Dimension | Standard eurocard plug‑in form‑factor |
| Net Weight | Approx. 0.42 kg |
| Conformal Coating | Conformal‑coated variant available for corrosive and high‑humidity industrial environments. |
| Vibration Resistance | Complies with IEC 60068‑2‑6 industrial cabinet vibration criteria. |
Main Functions
- DSAO110 (57120001‑AT1) is 4‑channel isolated analog output eurocard module for ABB Advant Master S100 I/O system. It converts digital control values from DCS controller into standard industry analog signals for field actuators, control valves and positioning devices.
- Four fully independent output channels, each channel supports configurable voltage or current mode. Galvanic isolation suppresses ground loop interference between field equipment and DCS rack, improving system stability for power plant and chemical‑process control.
- Built‑in channel‑level self‑diagnosis: detects output open‑circuit, over‑load fault, reports fault status back to Advant Master controller; front‑panel LED indicates module operating and fault status for on‑site maintenance.
- Typical field failure symptoms
‑ No analog output while receiving valid digital set‑point from controller
‑ Output value drift, poor precision
‑ Channel overload fault alarm
‑ Loss of communication between module and rack backplane bus
Common root causes: 24 VDC power‑supply abnormality, field loop short‑circuit / over‑voltage damaging output channels, backplane connector poor contact, ageing of analog components under dusty & humid cabinet environment.
- Pure maintenance‑oriented spare‑part component, only for repair and replacement of existing legacy Advant Master DCS installations; not suitable for new‑project engineering deployment.
Typical Applications
- Spare‑part replacement for DSAO110 analog output module inside ABB S100 I/O rack.
- Troubleshooting scenarios: analog control loop failure, valve actuator abnormal control, channel fault diagnosis.
- Preventive‑maintenance spare‑part inventory for power‑plant, pulp‑paper and chemical plants equipped with Advant Master DCS system.
- Hardware refurbishment for decommissioned Advant Master S100 I/O assemblies.
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