Allen-Bradley 1746-NR8 SLC 500 RTD Input Module
$123.00
$320.00
Description
Product Description
The Allen-Bradley 1746-NR8 is an eight-channel RTD and resistance analog input module developed for the SLC 500 programmable controller platform. This module is designed for high-accuracy temperature monitoring and resistance measurement applications in industrial automation systems.
The module accepts multiple RTD sensor types including platinum, copper, nickel, and nickel-iron elements, while also supporting direct resistance input devices. Its flexible input configuration allows integration into process temperature control, thermal monitoring, and machine protection systems.
The 1746-NR8 uses sigma-delta conversion technology to deliver stable analog signal processing with fine temperature resolution and reliable noise rejection. It is compatible with both fixed and modular SLC 500 hardware architectures.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Allen-Bradley |
| Product Series | SLC 500 |
| Product Type | RTD / Resistance Analog Input Module |
| Model Number | 1746-NR8 |
| Number of Input Channels | 8 Channels |
| Input Type | RTD and Resistance |
| Compatible PLC Platform | SLC 500 Fixed and Modular Systems |
| Backplane Current @ 5V DC | 100 mA |
| Backplane Current @ 24V DC | 55 mA |
| Maximum Power Consumption | 1.82 W |
| Power Dissipation | 0.5 W at 5V DC, 1.32 W at 24V DC |
| A/D Conversion Method | Sigma-Delta Modulation |
| Temperature Resolution | 0.01°C |
| Update Time | 6 ms to 2 s |
| Step Response | 60 ms Input, 2.5 ms Output |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Chassis Compatibility | Any Slot Except Slot 0 |
| Weight | 0.75 lbs |
Supported RTD Sensor Types
The 1746-NR8 supports the following RTD sensor standards:
-
Platinum 100 / 200 / 500 / 1000 Ohm (Alpha 0.00385)
-
Platinum 100 / 200 / 500 / 1000 Ohm (Alpha 0.003916)
-
Copper 10 Ohm
-
Nickel 120 Ohm (Alpha 0.00618)
-
Nickel 120 Ohm (Alpha 0.00672)
-
Nickel-Iron 604 Ohm
Supported Resistance Input Ranges
-
0 to 150 Ohms
-
0 to 300 Ohms
-
0 to 500 Ohms
-
0 to 1000 Ohms
Application Areas
The 1746-NR8 module is commonly installed in:
-
Industrial temperature monitoring systems
-
Furnace and oven controls
-
HVAC automation
-
Process manufacturing
-
Thermal process regulation
-
Water treatment facilities
-
Machine condition monitoring
FAQ
How many RTD channels are available on the 1746-NR8?
The module provides eight independently configurable analog input channels.
Can the module accept direct resistance measurements?
Yes. In addition to RTD sensors, the 1746-NR8 supports direct resistance input devices across multiple resistance ranges.
Which SLC 500 systems support this module?
The module is compatible with both fixed and modular SLC 500 platforms.
Can the module be installed in Slot 0?
No. The 1746-NR8 must be installed in any available chassis slot except Slot 0.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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