Allen-Bradley 1756-IR6I ControlLogix RTD Input Module
$123.00
$320.00
Description
Product Description
The 1756-IR6I from Allen-Bradley is a high-accuracy isolated RTD input module developed for the ControlLogix automation platform. This module provides six individually isolated analog input channels designed for resistance temperature detector (RTD) and direct resistance measurement applications in industrial process control systems.
Engineered for temperature monitoring environments requiring electrical isolation and stable signal processing, the Allen-Bradley 1756-IR6I supports multiple RTD sensor standards including platinum, nickel, and copper elements. The module offers 16-bit conversion accuracy and flexible data handling through integer and IEEE 32-bit floating-point formats.
Its isolated channel architecture improves measurement reliability in electrically noisy environments and reduces signal interference between field devices.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Allen-Bradley |
| Product Series | ControlLogix |
| Product Type | Isolated RTD Analog Input Module |
| Model Number | 1756-IR6I |
| UPC | 612598172306 |
| Input Channels | 6 Individually Isolated Inputs |
| Signal Type | RTD and Resistance Inputs |
| Module Resolution | 16-Bit |
| Supported Sensor Types | Platinum, Nickel, Copper RTDs |
| Platinum RTD Support | 100, 200, 500, 1000 Ω (α = 0.00385) |
| Platinum RTD Alternative | 100, 200, 500, 1000 Ω (α = 0.003916) |
| Nickel RTD Support | 120 Ω (α = 0.00672) |
| Nickel RTD Alternative | 100, 120, 200, 500 Ω (α = 0.00618) |
| Copper RTD Support | 10 Ω Copper |
| Resistance Measurement Ranges | 1–487 Ω, 2–1000 Ω, 4–2000 Ω, 8–4000 Ω |
| Resolution Scaling | 7.7 mΩ/bit to 60 mΩ/bit depending on range |
| Data Formats | Integer (2’s Complement), IEEE 32-Bit Floating Point |
| Minimum Scan Time | 10 ms Integer Mode (Ohms) |
| Floating Point Scan Time | 25 ms (Resistance), 50 ms (Temperature) |
| Backplane Current at 5V | 250 mA |
| Backplane Current at 24V | 2 mA |
| Total 24V Power Consumption | 125 mA |
| Maximum Power Dissipation | 4.3 W |
| Off-State Input Current | 2.75 mA Maximum |
| Maximum Operating Current | 1.2 mA at 30V AC / 60 Hz |
| Terminal Block Compatibility | 1756-TBNH, 1756-TBSH |
| Connector Type | 20-Pin RTD Terminal Interface |
| Dimensions | 1.5 × 6.0 × 5.5 in (3.8 × 15.2 × 14.0 cm) |
| Weight | 0.6 lbs |
Key Features
-
Six isolated RTD and resistance input channels
-
Compatible with multiple RTD sensor curves and resistance ranges
-
16-bit analog conversion for accurate temperature acquisition
-
Electrical channel isolation improves signal stability
-
Supports floating-point and integer data processing
-
Designed for ControlLogix chassis-based systems
-
Suitable for process temperature monitoring and resistance measurement applications
-
Removable terminal block support for simplified maintenance
Supported RTD Sensor Types
The 1756-IR6I supports several industrial RTD standards commonly used in temperature control systems:
-
Platinum RTDs: 100 Ω, 200 Ω, 500 Ω, 1000 Ω
-
Nickel RTDs: 100 Ω, 120 Ω, 200 Ω, 500 Ω
-
Copper RTDs: 10 Ω
-
Multiple temperature coefficient curves supported
Typical Applications
-
Industrial temperature monitoring
-
Process control systems
-
Chemical and petrochemical facilities
-
Food and beverage processing
-
Power generation systems
-
Furnace and thermal equipment monitoring
-
Water treatment automation
-
High-noise industrial environments requiring isolated analog inputs
FAQ
What type of sensors can be connected to the 1756-IR6I?
The module supports platinum, nickel, and copper RTD sensors, including 100 Ω, 200 Ω, 500 Ω, and 1000 Ω platinum RTDs.
Are the input channels electrically isolated?
Yes. Each of the six input channels is individually isolated to improve noise immunity and measurement reliability.
Which ControlLogix terminal blocks are compatible?
The module supports Allen-Bradley 1756-TBNH and 1756-TBSH removable terminal blocks.
Can the module measure direct resistance values?
Yes. In addition to RTD temperature sensing, the module supports direct resistance measurement across multiple selectable ranges.
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.
Featured
Complementary products
Express Delivery
Fast shipping for your urgent needs.
Large Inventory
Extensive stock ensures quick availability.
Premium Quality
Genuine, high-grade PLC & DCS components.
24/7 Customer Support
Reliable service for clients worldwide.