Allen-Bradley 1771-IR/B RTD Analog Input Module
$123.00
$320.00
Description
Allen-Bradley 1771-IR/B RTD Analog Input Module
The Allen-Bradley 1771-IR/B, also cataloged as the 1771-IR RTD Analog Input Module, operates as a dedicated hardware component for resistance temperature signal acquisition within PLC-5 I/O chassis platforms. The module converts three-wire RTD sensor inputs into digital temperature data for PLC processing, supporting platinum RTD measurement and isolated analog input operation.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-IR/B |
| Brand | Allen-Bradley |
| Product Type | RTD Analog Input Module |
| System Platform | PLC-5 1771 I/O chassis |
| Origin | United States |
| Weight | 1.15 lbs |
| Dimensions | 237.5 x 183 x 55 mm |
| Operating Temp | 0 to 60 deg C |
| Storage Temp | -40 to 85 deg C |
| Power Consumption | Approx. 6 W |
| Sensor Type | 100 Ohms platinum RTD, 10 Ohms copper/other RTD |
| Input Configuration | 6 three-wire RTD inputs |
| Resolution | 16 bits |
| Backplane Current | 800 mA at 5 VDC |
| Module Mounting | Rack mounting |
| Wiring Arm | 1771-WQ |
| Isolation | Optical isolation between field inputs and backplane |
| RTD Measurement Range | Up to -200 to +850 deg C depending on RTD type |
| Conversion Method | RTD resistance to digital temperature conversion |
RTD Signal Processing and PLC-5 Integration
The 1771-IR/B provides six three-wire RTD input channels for direct connection to resistance temperature detectors. The module measures sensor resistance variation and transfers converted temperature data through the PLC-5 backplane interface. The three-wire RTD configuration compensates for lead resistance effects during temperature acquisition.
The Allen-Bradley PLC-5 architecture supports block transfer communication for analog module data exchange. The module uses isolated input circuitry to separate field sensor wiring from internal controller backplane signals.
Frequently Asked Questions
Q: What type of temperature sensors can be connected to the 1771-IR/B module?
A: The module accepts RTD sensors including 100 Ohms platinum RTDs and 10 Ohms copper or other compatible resistance temperature devices.
Q: How many RTD inputs are available on the 1771-IR/B?
A: The module provides 6 three-wire RTD input channels for temperature signal measurement.
Q: What is the backplane power requirement of the 1771-IR/B?
A: The module requires approximately 800 mA from the 5 VDC PLC-5 backplane supply.
Field Installation Guidelines
Install the 1771-IR/B module in a compatible 1771 I/O chassis slot with the backplane power removed during insertion or removal. Connect RTD field wiring through the specified 1771-WQ wiring arm and verify correct three-wire sensor termination.
Route RTD signal cables separately from high-current AC or switching circuits to reduce electrical interference. Use shielded instrumentation cable where required by the installation environment and terminate cable shields according to the control system grounding practice.
Verify RTD sensor type, channel configuration, and wiring polarity before commissioning. Confirm that the module is securely seated in the rack and that all field connections are mechanically fixed.
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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