ProductPRODUCT
Featured products
Contact Us
- Allen Bradley
- 1746-NR8
- PLC Module/Rack
- USA
- 145 × 35 × 140 mm
- 0.34kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 44
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| [email protected] | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
Allen-Bradley 1746-NR8 Detailed Technical Overview
1. Product Overview
The Allen-Bradley 1746-NR8 is an 8-channel RTD (Resistance Temperature Detector) and resistance input module used in the SLC 500 PLC system. It is designed to measure temperature and resistance signals from field devices and convert them into digital data for PLC processing.
Each channel can be individually configured to accept RTD sensors or direct resistance inputs. The module supports multiple RTD types such as platinum, nickel, copper, and nickel-iron sensors, making it highly flexible for industrial temperature measurement applications.
It is widely used in process control systems where accurate and stable temperature monitoring is required.
2. Brand Information
- Brand: Allen-Bradley
- Industry: Industrial automation and control systems
- Product Type: RTD / resistance analog input module
This brand is known for durable industrial automation hardware designed for long-term operation in harsh environments.
3. Product Series
- Series: SLC 500
- Category: Analog input module
- Module Type: RTD / resistance input module
The SLC 500 system is a modular PLC platform. The 1746-NR8 is specifically designed for temperature and resistance measurement applications, providing high-resolution analog input capability.
4. Technical Parameters
Core Specifications Table
| Parameter | Value |
|---|---|
| Model | 1746-NR8 |
| Module Type | RTD / Resistance Input |
| Series | SLC 500 |
| Number of Channels | 8 |
| Input Type | RTD / Resistance |
| Supported RTD Types | Pt100, Pt200, Pt500, Pt1000, Cu10, Ni120, Ni Iron |
| Resistance Range | 0–150 Ω / 0–300 Ω / 0–500 Ω / 0–1000 Ω |
| Temperature Range | -200°C to 850°C |
| Resolution | 16-bit (0.01°C typical) |
| Conversion Method | Sigma-Delta ADC |
| Update Time | 6 ms – 2 s (configurable) |
| Backplane Current (5V) | 100 mA |
| Backplane Current (24V) | 55 mA |
| Power Consumption | ~1.8 W |
| Isolation Voltage | 500 V AC |
| Sensor Wiring | 2-wire / 3-wire / 4-wire (supported) |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5–95% non-condensing |
| Dimensions (mm) | 145 × 35 × 140 |
| Weight (kg) | 0.32 – 0.34 kg |
5. Product Functions and Applications
Functional Description
- Converts RTD resistance signals into temperature values
- Supports direct resistance measurement from field devices
- Provides linearized temperature output in °C or °F
- Supports multiple wiring configurations for sensors
- Includes diagnostics for open-circuit and short-circuit detection
- Filters signal noise for stable industrial readings
Typical Applications
- Industrial temperature monitoring systems
- Chemical and petrochemical processing plants
- Food and beverage production temperature control
- HVAC system monitoring
- Plastic molding and heat treatment equipment
- Energy and power plant thermal monitoring
6. Product Advantages
1. High Channel Density
Eight input channels allow efficient use of PLC rack space.
2. High Measurement Accuracy
16-bit resolution ensures fine temperature measurement accuracy.
3. Wide Sensor Compatibility
Supports multiple RTD types and resistance inputs.
4. Strong Noise Immunity
Industrial-grade isolation improves signal stability.
5. Flexible Configuration
Each channel can be independently configured for different sensor types.
7. Recommended Models (Same Series or Related)
SLC 500 Series Related Modules
| Model | Type | Channels | Signal Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1746-NI4 | Analog Input | 4 | Voltage / Current | 145 × 35 × 140 | 0.32 |
| 1746-NI8 | Analog Input | 8 | Voltage / Current | 145 × 35 × 140 | 0.34 |
| 1746-NI16I | Analog Input | 16 | Current | 145 × 35 × 140 | 0.36 |
| 1746-NO4I | Analog Output | 4 | Current | 145 × 35 × 140 | 0.32 |
| 1746-NO4V | Analog Output | 4 | Voltage | 145 × 35 × 140 | 0.33 |
8. Recommended Popular Models (Same Brand)
Popular Automation Modules
| Model | Type | Channels | Voltage | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1756-L73 | Controller | — | 5V DC | 150 × 140 × 130 | 0.36 |
| 1769-L36ERM | Compact Controller | — | 24V DC | 120 × 90 × 70 | 0.30 |
| 1734-IE8C | Analog Input | 8 | 4–20 mA | 75 × 12 × 60 | 0.16 |
| 1769-OF8C | Analog Output | 8 | 0–10 V | 118 × 87 × 35 | 0.30 |
| 1756-EN2T | Ethernet Module | — | 5V DC | 150 × 140 × 130 | 0.32 |