Allen-Bradley 1771-IF PLC-5 Analog Input Module
$123.00
$320.00
Description
Product Description
The 1771-IF by Allen-Bradley is an analog input interface module developed for PLC-5 automation platforms. This module is designed to acquire low-level analog process signals from field instruments and convert them into digital values for PLC processing and monitoring.
The module supports up to eight single-ended analog input channels and uses 12-bit analog-to-digital conversion for precise signal interpretation. It is commonly integrated into industrial control systems handling process variables such as temperature, pressure, flow, and light intensity.
Designed for installation within a 1771 I/O chassis, the module offers fast millivolt signal processing and stable analog acquisition performance for legacy PLC-5 environments.
Key Features
• Eight single-ended analog input channels
• 12-bit analog-to-digital conversion
• Supports millivolt and voltage input processing
• Compatible with PLC-5 control systems
• Rack-mounted module design
• Suitable for process instrumentation signals
• Supports direct connection of analog sensing devices
• Includes field wiring arm assemblies for installation
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Model Number | 1771-IF |
| Product Family | PLC-5 / 1771 I/O |
| Product Type | Analog Input Module |
| Input Channels | 8 Single-Ended Inputs |
| Converter Resolution | 12 Bit |
| Supported Input Range | 0–10 VDC / Millivolt Signals |
| Signal Conversion | Binary or Proportional BCD |
| Mounting Style | Rack Mount |
| Backplane Voltage Requirement | 5 VDC |
| Backplane Current Draw | Approx. 0.75–1.3 A @ 5 VDC |
| Additional Backplane Current | 74 mA |
| Typical AC Signal Delay (On) | 24 ms ±10 ms |
| Typical DC Signal Delay (On) | 10 ms ±4 ms |
| Typical AC Signal Delay (Off) | 24 ms ±10 ms |
| Typical DC Signal Delay (Off) | 20 ms ±9 ms |
| Maximum Off-State Current | 1.7 mA |
| Wiring Support | Dual Field Wiring Arms |
| Dimensions | 3.3 × 25.4 × 15.2 cm |
| Weight | 1.3 lb |
Operational Overview
The 1771-IF receives analog signals from external field devices and converts them into digital data usable by PLC-5 processors. The module can monitor multiple analog measurement points simultaneously and is suitable for applications requiring continuous signal acquisition.
Typical connected devices include:
• Pressure transmitters
• Temperature sensors
• Millivolt signal instruments
• Light intensity sensors
• Analog process transmitters
Series B versions may also operate alongside compatible analog expander modules for increased flexibility.
Typical Applications
Common industrial uses include:
• Process control systems
• Temperature monitoring
• Industrial automation panels
• Utility and water treatment systems
• Manufacturing process measurement
• Analog instrumentation integration
FAQ
How many analog devices can the 1771-IF support?
The module supports up to eight single-ended analog input channels.
What type of PLC system uses this module?
The module is designed for Allen-Bradley PLC-5 and 1771 I/O chassis systems.
Does the module support thermocouple inputs directly?
The standard 1771-IF is primarily intended for analog voltage and millivolt input signals. Dedicated thermocouple modules may be preferable for direct thermocouple applications.
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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