PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-IM is an eight-channel digital input module designed for PLC-5 systems. This module interfaces with pushbuttons, selector switches, limit switches, and float switches. It operates in high-voltage environments requiring 220 to 240 Volts AC or 240 Volts DC. The unit mounts directly into any standard 1771 input/output chassis.
Each input circuit handles an on-state operating voltage range of 184 to 276 Volts. The backplane draws 75 milliamperes of current during standard operation. Field wiring terminates at a separate 1771-WA wiring arm. This configuration allows quick module replacement without disconnecting individual field conductors. Total power dissipation ranges from 0.4 Watts to a maximum of 2.4 Watts.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| AC Operating Voltage | 184-276 Volts |
|---|
| Backplane Current | 75 Miliamperes |
|---|
| Category | PLCs |
|---|
| DC Operating Voltage | 184-276 Volts |
|---|
| Max AC Off-State Current | 1.0 Miliameres |
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| Max DC Off-State Current | 1.0 Miliameres |
|---|
| Module Type | Digital AC/DC Input Module |
|---|
| Mounting | Rack Mountable |
|---|
| Number of Inputs | 8 Inputs |
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| Product Line | PLC 5 |
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| Typical AC Signal Delay (Off) | 20 (+/- 6) ms |
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| Typical AC Signal Delay (On) | 20 (+/- 6) ms |
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| Typical DC Signal Delay (Off) | 20 (+/- 9) ms |
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| Typical DC Signal Delay (On) | 10 (+/- 4) ms |
|---|
| UPC | 025887000059 |
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| Voltage Category | 220 Volts AC/DC |
|---|
| Weight | 1.13 lbs (0.51 kg) |
|---|
| Wiring Arm | 1771-WA |
|---|
TECHNICAL INFORMATION
Features
- Provides eight individual digital inputs for 220 to 240 Volt AC and DC signals.
- Compatible with 1771-WA wiring arm for pre-wired chassis connections.
- Draws 75 mA of current from the 1771 backplane power supply.
- Features typical AC input signal delays of 20 ms for on and off states.
- Maintains maximum off-state leakage current of 1.0 mA.
TECHNICAL INFORMATION
Applications
- Monitoring discrete field devices such as pushbuttons and selector switches.
- Sensing AC limit switches in heavy industrial machinery.
- Liquid level monitoring using industrial float switches.
- High-voltage discrete status acquisition in PLC-5 automation racks.
TECHNICAL INFORMATION
Connections / Interfaces
- Connects to field wiring via the 1771-WA wiring arm.
- Installs into standard 1771 I/O chassis slots via backplane edge connectors.
- Provides eight discrete input channels across the front terminal assembly.
TECHNICAL INFORMATION
Installation Guidelines
- Insert the module into an unpowered 1771 chassis slot.
- Secure the module firmly until the chassis latch engages.
- Swing the 1771-WA wiring arm onto the module to complete connections.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley 1771 I/O chassis.
- Uses the 1771-WA wiring arm for field conductor termination.
- Integrates with Allen-Bradley PLC-5 programmable logic controller systems.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley 1771 I/O chassis. Uses the 1771-WA wiring arm for field conductor termination. Integrates with Allen-Bradley PLC-5 programmable logic controller systems.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What wiring arm does the Allen-Bradley 1771-IM require?
The 1771-IM module uses the Allen-Bradley 1771-WA wiring arm for all field connections.
What is the operating voltage range for the 1771-IM input channels?
The on-state operating voltage range is 184 to 276 Volts AC or DC.
What is the typical reference market price for the 1771-IM?
Observed market reference pricing is approximately $109 USD for refurbished condition. Pricing figures are indicative market reference pricing only and are not a final quotation.
What is the backplane current draw for the 1771-IM module?
The 1771-IM draws a nominal backplane current of 75 milliamperes.
