PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-IVN is a PLC-5 digital DC input module. It converts DC field signals from user devices to logic levels for the processor. The module directly controls corresponding bit states in the PLC data table. It contains thirty-two inputs arranged into four sets of eight channels. Optoelectrical isolation protects system circuits from field electrical transients. An integrated input filter reduces electrical noise across incoming lines.
The 1771-IVN installs directly into an Allen-Bradley 1771 I/O chassis containing a processor. The module supports 1/2-slot and 1-slot I/O addressing within PLC-5 architectures. Front-panel status indicators show system logic side indication for all thirty-two inputs. Field connections land on a removable 1771-WN or 1771-WH wiring arm. This wiring arm design allows module replacement without disconnecting field leads.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Backplane Current | 280 Milliamperes |
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| Category | PLCs |
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| DC Operating Voltage | 10-30 Volts |
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| Max DC Off-State Current | 1.7 Miliamperes |
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| Model Status | Earlier Model |
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| Module Type | Digital DC Input Module |
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| Mounting | Rack Mountable |
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| Number of Inputs | 32 Inputs (4 Sets of 8) |
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| Product Line | PLC 5 |
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| Typical AC Signal Delay (Off) | 45 (+/- 15) ms |
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| Typical DC Signal Delay (Off) | 50 ms |
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| Typical DC Signal Delay (On) | 6 (+/- 2) ms (Digital Filter) |
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| UPC | 612598002481 |
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| Voltage Category | 10-60 Volts DC, Source (Sink Load) |
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| Weight | 2.00 lbs (0.91 kg) |
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| Wiring Arm | 1771-WH |
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TECHNICAL INFORMATION
Features
- Provides thirty-two DC inputs organized into four sets of eight channels.
- Supports sink DC input signal termination within source load field wiring schemes.
- Incorporates front-panel status indicators for each of the thirty-two system logic channels.
- Employs optoelectrical isolation to protect internal system circuits from field electrical transients.
- Includes an input filtering feature designed to reduce electrical noise on signal lines.
- Uses chassis backplane keying bands to ensure proper module alignment during insertion.
- Enables module replacement without disconnecting field leads using a removable wiring arm.
TECHNICAL INFORMATION
Applications
- Sink DC input signal termination in 1771 I/O chassis architectures.
- Digital DC field signal conversion for Allen-Bradley PLC-5 processors.
TECHNICAL INFORMATION
Connections / Interfaces
- Connects to field wiring via an external 1771-WN or 1771-WH removable wiring arm.
- Mates with standard 1771 I/O chassis backplane edge connectors.
- Requires lower chassis connector keying between pins 14 and 16.
- Requires upper chassis connector keying between pins 30 and 32.
TECHNICAL INFORMATION
Installation Guidelines
- Position chassis keying bands between pins 14-16 on the lower connector.
- Position chassis keying bands between pins 30-32 on the upper connector.
- Slide the module firmly along chassis card guides until properly seated.
- Fasten the pre-wired wiring arm securely to the front of the chassis.
TECHNICAL INFORMATION
Configuration Guidelines
- Select either 1/2-slot or 1-slot I/O addressing mode for the chassis slot.
- Map thirty-two input bits to the corresponding PLC-5 processor data table locations.
- Maintain input field power within the rated 10 to 30 V DC operating range.
TECHNICAL INFORMATION
Compatibility
- Installs directly into Allen-Bradley 1771 I/O chassis architectures.
- Communicates with Allen-Bradley PLC-5 programmable controllers.
- Connects to field wiring using 1771-WN and 1771-WH wiring arms.
TECHNICAL INFORMATION
Lifecycle / Replacement Information
- The 1771-IVN is categorized as an earlier legacy PLC-5 hardware model.
- Field replacement requires verifying keying band locations on the chassis backplane.
- Existing field wiring remains intact on the removable arm during module replacement.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSInstalls directly into Allen-Bradley 1771 I/O chassis architectures. Communicates with Allen-Bradley PLC-5 programmable controllers. Connects to field wiring using 1771-WN and 1771-WH wiring arms.
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 of the Allen-Bradley 1771-IVN?
The 1771-IVN module operates across a DC voltage range of 10 to 30 V DC.
How many input channels are available on the 1771-IVN module?
The module provides 32 digital DC inputs arranged in four sets of eight channels.
Which wiring arm is compatible with the 1771-IVN?
The module terminates field connections using either a 1771-WN or 1771-WH removable wiring arm.
What are the chassis backplane keying pin locations for the 1771-IVN?
Keying bands position between pins 14 and 16 lower, and pins 30 and 32 upper.
What is the indicative market reference price for the 1771-IVN?
Observed market reference pricing is approximately $86.00 USD. Figures are indicative market reference pricing only and are not a final quotation.
