Description
Product Name: 1746SC-NT8 Allen Braley Central control module
Product details:
The Allen-Bradley 1746SC-NT8 is a high-density, 8-channel analog input module specifically designed for the SLC 500 series platform. Manufactured by Spectrum Controls (a licensed partner of Rockwell Automation), it is widely used for precision temperature monitoring.
1. Product Overview
The 1746SC-NT8 is an RTD/Resistance Input Module. It allows for the direct connection of up to eight RTD (Resistance Temperature Detector) sensors or direct resistance signals to an SLC 500 system without the need for external transmitters.
2. Technical Specifications
Below are the key technical parameters for the module:
| Parameter | Specification |
| Number of Inputs | 8 Channels |
| Input Types | RTD (Pt, Ni, Cu, Ni-Fe) and Resistance (\Omega) |
| Resolution | 16-bit |
| Backplane Current | 120mA at 5V DC; 70mA at 24V DC |
| Isolation | 500V DC (channel-to-chassis); 10V DC (channel-to-channel) |
| Update Time | Variable (depends on filtered frequency) |
| Supported RTD Types | 100, 200, 500, 1000 \Omega Platinum (385 & 3916) |
| Accuracy | Up to \pm0.2°C (depending on sensor type) |
3. Product Advantages
- High Density: Provides 8 channels in a single slot, saving rack space and reducing the overall system cost per point.
- Flexibility: Supports multiple RTD types and resistance ranges (up to 3000\Omega) simultaneously on different channels.
- Precision: 16-bit resolution ensures highly accurate data for critical temperature control processes.
- Ease of Integration: Fully compatible with SLC 500 backplanes and programmed using standard RSLogix 500 software.
- No External Transmitters: Direct sensor-to-module connection eliminates the cost and wiring complexity of signal converters.
4. Key Considerations (Precautions)
- Wiring: Use shielded twisted-pair cable to minimize EMI (Electromagnetic Interference). Ensure that the shield is grounded at only one end.
- Configuration: The module must be configured via the “Setup Screen” in RSLogix 500 or through “Block Transfer” if used in certain remote I/O scenarios. Incorrect configuration of sensor types will lead to data errors.
- Heat Dissipation: Ensure the PLC rack has adequate ventilation, as high-density modules can generate significant heat.
- Cold Swapping: Never install or remove the module while the rack power is ON. This could damage the backplane or the module circuitry.
5. Product Applications
The 1746SC-NT8 is ideal for industries requiring precise temperature regulation and extensive data collection:
- Food & Beverage: Monitoring oven temperatures and pasteurization processes.
- Chemical Processing: Reactor temperature control where high accuracy is mandatory for safety.
- HVAC Systems: Large-scale building climate control and air handling unit monitoring.
- Power Plants: Bearing temperature monitoring in turbines and generators.
- Pharmaceuticals: Maintaining strict environmental conditions in cleanrooms and storage.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation！
Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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