Allen-Bradley 1771-IRC RTD Analog Input Module
$123.00
$320.00
Description
Allen-Bradley 1771-IRC RTD Analog Input Module
The Allen-Bradley 1771-IRC, also cataloged as the 1771-IRC RTD Analog Input Module, operates as a dedicated hardware component for resistance temperature signal acquisition within PLC-5 1771 I/O chassis platforms. The module converts platinum RTD resistance signals into digital temperature values through isolated analog input processing.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-IRC |
| Brand | Allen-Bradley |
| Product Type | RTD Analog Input Module |
| System Platform | PLC-5 1771 I/O chassis |
| Origin | United States |
| Weight | 0.8 kg |
| 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 | Platinum RTD, 100 Ohms, 0.00385 coefficient |
| Input Configuration | 16 single-ended channels or 8 differential channels |
| Resolution | 12-bit |
| Accuracy | +/- 0.1% of full scale |
| Conversion Time | 2.5 ms per channel |
| Backplane Current | 1.2 A at 5 VDC |
| Isolation | Optical isolation between field inputs and backplane |
| Wiring Arm | 1771-WQ |
| Mounting Type | Rack mounting |
| Compatibility | Allen-Bradley PLC-5 processors and 1771 I/O chassis |
PLC-5 RTD Signal Processing and Firmware Compatibility
The 1771-IRC provides RTD resistance measurement channels for PLC-5 control systems. The module performs analog-to-digital conversion of temperature sensor signals and transfers processed data through the PLC-5 backplane interface.
The module supports industrial control I/O density scaling through multiple RTD input channels in a single 1771 rack slot. The isolated input architecture separates field sensor circuits from the controller backplane, reducing signal interference between measurement wiring and PLC communication paths.
Frequently Asked Questions
Q: What RTD sensor type is supported by the 1771-IRC module?
A: The module supports platinum RTD sensors, including 100 Ohms RTDs with a 0.00385 temperature coefficient.
Q: How many temperature measurement channels are available on the 1771-IRC?
A: The module provides 16 single-ended RTD channels or 8 differential RTD channels depending on configuration.
Q: What is the power requirement from the PLC-5 backplane?
A: The 1771-IRC requires approximately 1.2 A from the 5 VDC backplane supply.
Field Installation Guidelines
Install the 1771-IRC module into a compatible 1771 I/O chassis slot with the backplane power removed before insertion or removal. Connect RTD sensors through the specified 1771-WQ wiring arm and verify correct three-wire or differential wiring configuration.
Route RTD signal cables separately from high-voltage and switching circuits to minimize electrical noise coupling. Apply appropriate cable shielding and grounding practices according to the control panel installation standard.
Verify sensor type selection, channel configuration, and wiring termination before system startup. Confirm that the module is fully seated in the rack and that field connections are mechanically secured.
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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