Allen-Bradley 1771-IL Isolated Analog Input Module
$123.00
$320.00
Description
Allen-Bradley 1771-IL Isolated Analog Input Module
The Allen-Bradley 1771-IL, also cataloged as the 1771-IL Analog Input Module, operates as a dedicated hardware component for isolated analog signal acquisition within PLC-5 I/O chassis platforms. It provides eight differential input channels with configurable voltage and current ranges and block transfer data exchange.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-IL |
| Brand | Allen-Bradley (Rockwell Automation) |
| Origin | United States |
| Module Type | Isolated Analog Input Module |
| Product Family | PLC-5 |
| Input Channels | 8 isolated differential inputs |
| Signal Type | Voltage and current analog inputs |
| Voltage Range | -10 to +10 VDC, -5 to +5 VDC, 0 to 10 VDC, 0 to 5 VDC, 1 to 5 VDC |
| Current Range | -20 to +20 mA, 0 to 20 mA, 4 to 20 mA |
| Resolution | 16-bit binary / 15 bits plus sign |
| Channel Update Rate | 500 ms for 8 channels |
| Isolation | 1000 V isolated differential inputs |
| Data Format | Natural binary or BCD scaling to +/-9999 |
| Interface | Block Transfer Instructions (BTW/BTR) |
| Backplane Current | 1.3 A |
| Weight | 1 lbs |
| Mounting Style | Rack mount, 1 slot width |
| Wiring Arm | 1771-WG |
| Compatibility | PLC-5 processors and 1771 I/O chassis |
PLC-5 Analog Signal Isolation and Data Processing
The 1771-IL module provides isolated differential analog input processing for PLC-5 control systems. Each channel supports configurable voltage and current measurement ranges, allowing direct connection to analog transmitters and field instruments. The isolated input architecture separates field signal circuits from the PLC backplane interface.
The module exchanges analog data through PLC-5 block transfer operations using BTW and BTR instructions. The Allen-Bradley PLC-5 backplane communication structure supports deterministic I/O data handling and analog channel data transfer within rack-based configurations.
Frequently Asked Questions
Q: How many analog input channels are available on the 1771-IL module?
A: The 1771-IL provides eight isolated differential analog input channels.
Q: What communication method does the 1771-IL use with PLC-5 processors?
A: The module uses block transfer instructions, including Block Transfer Read (BTR) and Block Transfer Write (BTW), for analog data exchange.
Q: Does the 1771-IL require an external power supply?
A: No external field power supply is required according to the provided specifications.
Field Installation Guidelines
Install the 1771-IL module in a compatible 1771 I/O chassis slot and verify rack power isolation before installation or removal. Connect analog field wiring through the 1771-WG wiring arm according to channel polarity and signal type requirements.
Use shielded analog cables where applicable and terminate cable shields according to the control system grounding practice. Keep analog signal wiring separated from high-current conductors, motor cables, and switching circuits to reduce electrical noise coupling. Verify voltage and current range configuration before connecting field transmitters
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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