PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-IN is a PLC-5 1771-IN digital input module designed for Bulletin 1771 I/O systems. It provides 8 input channels configured for 24 Volts AC/DC nominal voltage category operation. The unit requires 1 single slot in an Allen-Bradley Bulletin 1771 chassis. It interfaces field status signals directly with the PLC-5 processor backplane.
During continuous operation, the module exhibits an AC operating voltage range of 12 to 28 Volts. It draws 80 milliamperes of backplane current at 5 Volts DC. Operating power dissipation ranges from a minimum of 0.4 Watts to a maximum of 5.4 Watts. Field connections install via the designated 1771-WA wiring arm, and rack mounting secures the assembly within the chassis.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Number of Inputs | 8 inputs |
|---|
| Voltage Category | 24 Volts AC/DC |
|---|
| AC Operating Voltage | 12-28 Volts |
|---|
| Backplane Current | 80 milliamperes |
|---|
| Max AC Off-State Current | 2.8 milliamperes |
|---|
| Typical AC Signal Delay (On) | 18 (+/- 10) ms |
|---|
| Typical AC Signal Delay (Off) | 18 (+/- 10) ms |
|---|
| Power Dissipation | 0.4 W minimum, 5.4 W maximum |
|---|
| Wiring Arm | 1771-WA |
|---|
| Chassis Slot Requirement | 1 slot |
|---|
| Mounting Type | Rack mountable |
|---|
TECHNICAL INFORMATION
Features
- Provides 8 digital input channels for AC and DC operation.
- Operates across an AC voltage range of 12 to 28 Volts.
- Rated for 24 Volts AC/DC nominal voltage category.
- Requires 1 slot in a Bulletin 1771 I/O chassis.
- Draws 80 milliamperes of backplane current at 5 Volts DC.
- Connects field wiring using the 1771-WA wiring arm.
TECHNICAL INFORMATION
Applications
- Receiving 24V AC/DC discrete inputs in Allen-Bradley PLC-5 systems.
- Monitoring digital field circuit states through Bulletin 1771 I/O chassis.
TECHNICAL INFORMATION
Connections / Interfaces
- Terminal connections attach via the Allen-Bradley 1771-WA wiring arm.
- Direct backplane interface provides communication across the Bulletin 1771 chassis.
TECHNICAL INFORMATION
Installation Guidelines
- Mount the module into a single slot of an Allen-Bradley Bulletin 1771 chassis.
- Fasten the 1771-WA wiring arm to interface field signals.
TECHNICAL INFORMATION
Compatibility
- Installs directly into Allen-Bradley Bulletin 1771 I/O chassis.
- Connects using the 1771-WA wiring arm.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSInstalls directly into Allen-Bradley Bulletin 1771 I/O chassis. Connects using the 1771-WA wiring arm.
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 is the operating voltage range for the Allen-Bradley 1771-IN?
The 1771-IN operates within an AC voltage range of 12 to 28 Volts with a 24V AC/DC category rating.
Which wiring arm is compatible with the 1771-IN module?
The module uses the 1771-WA wiring arm for all field wiring connections.
How many slots does the 1771-IN occupy in a Bulletin 1771 chassis?
The module occupies exactly 1 slot in a Bulletin 1771 chassis.
What is the backplane current draw of the 1771-IN input module?
The 1771-IN draws 80 milliamperes of backplane current at 5 Volts DC.
