Description
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | ABB |
| Model | AI630 |
| Product ID | 3BHT300011R1 |
| Product Family | S600 I/O |
| Product Type | Analog input module |
| Number of Channels | 12 |
| Input Type | Pt100 RTD / resistance |
| Pt100 Temperature Range | −200°C to +600°C |
| Resistance Range | 0–500 Ω |
| Sensor Wiring | 3-wire or 4-wire; 2-wire requires additional wiring at the process connector |
| Resolution | 13 bits |
| Common-Mode Rejection Ratio | Greater than 100 dB |
| Isolation | Optical isolation for the input group |
| Dimensions | 252 × 273 × 40 mm |
| Net Weight | 1.195 kg |
| System Compatibility | Compatible S600 I/O installations; verify controller and rack configuration |
Product Overview
The ABB AI630 3BHT300011R1 is a 12-channel analog input module designed for Pt100 resistance temperature detectors and resistance measurement within ABB’s S600 I/O family. It is associated with Advant OCS installations, including supported Advant Controller 160 configurations. The module converts field sensor measurements into input values that the control system can use for process monitoring, operator displays, alarms, and temperature-related control functions.
The AI630 supports Pt100 temperature measurement from −200°C to +600°C and resistance measurement from 0 to 500 Ω. Its documented input arrangement supports 3-wire and 4-wire sensor connections, while 2-wire connections require additional wiring at the process connector. The published controller guide lists 13-bit resolution, a common-mode rejection ratio above 100 dB, and optical isolation for the input group. These specifications make the module relevant to installations that need multiple resistance-based temperature measurements through a compatible legacy I/O system.
When replacing an AI630, verify more than the model number. The existing I/O configuration, terminal arrangement, sensor wiring, controller support, and channel configuration must match the intended application. RTD measurement errors can arise from incorrect wiring, damaged sensors, poor terminal connections, or configuration mismatches. A replacement should be checked against the approved engineering documentation before being returned to service.
For procurement teams maintaining installed ABB control systems, the AI630 3BHT300011R1 is a specific S600 I/O spare rather than a general-purpose current or voltage input module. Confirm the full product identifier and request documented inspection or functional-test details when sourcing used or refurbished stock.
AI630
Major Features and Advantages
1. Twelve RTD input channels
The AI630 provides 12 input channels for Pt100 temperature sensors or supported resistance measurements. This allows several measurement points to be collected by one module where the existing system design supports it.
2. Wide Pt100 measurement range
The documented range of −200°C to +600°C supports temperature monitoring across a variety of industrial processes and equipment. The achievable measurement quality also depends on the sensor, wiring, installation, and calibration.
3. Three-wire and four-wire sensor support
The module supports common RTD wiring configurations. Four-wire arrangements can help reduce the effect of lead resistance, while three-wire wiring is widely used in industrial temperature measurement. Use the wiring method specified by the system design and applicable module documentation.
4. Resistance measurement capability
In addition to Pt100 temperature measurement, the supports resistance measurement from 0 to 500 Ω. Confirm the channel setup and scaling requirements before using this mode in an installed control application.
5. Group optical isolation
ABB’s controller documentation describes the module as optically isolated as one group. This is a group-level specification; it should not be interpreted as individual galvanic isolation between every input channel.
6. Integration with legacy ABB systems
The is listed within the S600 I/O product family and associated Advant OCS configurations. Using the correct replacement helps preserve the intended I/O architecture, provided the controller, rack, and field wiring are compatible.
Typical Applications
- Process temperature monitoring: Acquiring Pt100 measurements for compatible process equipment.
- Motor and machinery temperature monitoring: Reading RTD sensors where the equipment design specifies Pt100 inputs.
- Plant utilities: Monitoring temperatures in cooling, heating, and auxiliary systems.
- Industrial equipment monitoring: Collecting multiple resistance-based temperature measurements for control and alarm functions.
- Legacy DCS maintenance: Replacing an existing in a verified ABB S600 I/O installation.
- Resistance measurement: Measuring supported resistance inputs within the documented range.
The module’s suitability depends on the connected sensors, wiring design, control-system configuration, and required measurement performance. It should not be substituted for a current or voltage input module without an engineered compatibility assessment.
Related Products
| Model | Relationship |
|---|---|
| — 3BHT300011R1 | 12-channel Pt100/resistance analog input module. |
| AI610 — 3BHT300000R1 | analog input module for current signals. |
| AI620 — 3BHT300005R1 | analog input module for current and voltage signals. |
| AI625 — 3BHT300036R1 | analog input module with grouped isolation. |
| AI635 — 3BHT300032R1 | input module for thermocouple and millivolt signals, with Pt100 ambient-temperature measurement. |
| AO610 — 3BHT300008R1 | analog output module; different signal direction and function. |
These products belong to the broader I/O range but support different signal types and functions. Confirm the hardware specification before considering any alternative.
Installation and Maintenance
Before installing an ABB , isolate the relevant equipment according to site safety procedures. Confirm the module’s product ID, controller and rack compatibility, terminal assignments, and intended sensor type against the approved drawings.
- Verify that the replacement is 3BHT300011R1.
- Check the field sensor type and confirm whether the installation uses 3-wire or 4-wire RTD connections.
- Inspect terminal blocks, wiring, and connectors for corrosion, loose contacts, or physical damage.
- Confirm that the control-system configuration matches the intended Pt100 or resistance input mode.
- After installation, verify that the controller recognizes the module and that each used channel reports plausible values.
- Compare selected readings against a suitable reference instrument or approved calibration procedure.
- Record the module identifier and any inspection or commissioning results.
If readings are incorrect, investigate sensor wiring, lead resistance, terminal condition, configuration, and sensor integrity before concluding that the input module has failed.
Product Assurance
For procurement, verify the full identification ABB 3BHT300011R1 and request a clear nameplate photograph. For used or refurbished stock, ask for the condition, inspection scope, and available functional-test records. A visual inspection alone does not establish that all 12 channels operate correctly or meet the original measurement specification.
Before accepting a replacement, confirm I/O compatibility, Pt100/resistance requirements, terminal configuration, and controller support. Avoid relying on unverified claims about communication protocols, 16-bit resolution, or individual channel isolation; those claims are not supported by the cited technical documentation.
Procurement recommendation: The ABB 3BHT300011R1 is a specialized 12-channel Pt100/resistance input module for compatible I/O systems. Verify the part number, wiring arrangement, and system compatibility before ordering or installing the replacement.
