PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-OF04 is a PLC-5 analog output module designed for industrial chassis installations. This module provides four individually isolated analog outputs with 12-bit binary digital resolution. It delivers a nominal output voltage range of 1 to 5 Volts DC. Each channel supports an output current rating of 10 milliamps.
The hardware incorporates output overload protection to guard against field wiring short circuits. It features tested isolation rated at 850 Volts DC for one second. Channel update time is 1.6 milliseconds without scaling. Update time is 8 milliseconds across all channels when using BCD data and scaling.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Category | PLCs |
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| Product Line | PLC 5 |
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| Weight | 1.88 lbs (0.85 kg) |
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| Outputs | 4 |
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| Output current rating | 10 mA per channel |
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| Isolation voltage | 850 Volts DC for 1 second (Tested) |
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| Voltage | 1-5 Volts DC |
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| Enclosure | None (open) |
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| Digital resolution | 12 bits binary |
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| Conductors | 12 gauge stranded copper wire and 1,2 insulation |
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| Status indicators | Yes |
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| Output impedance | 1.5 Megaohms for current output |
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TECHNICAL INFORMATION
Features
- Provides four individually isolated analog output channels.
- Delivers a nominal output voltage range of 1 to 5 Volts DC.
- Provides 12-bit binary conversion resolution.
- Includes overload protection to protect outputs from load short circuits.
- Achieves scan rates of 1.6 milliseconds without scaling.
- Withstands operating mechanical shocks up to 30 G.
- Provides status indicators for operational visibility.
TECHNICAL INFORMATION
Connections / Interfaces
- Accepts 12 gauge stranded copper wire for field wiring connections.
- Provides four isolated channel connections for field loads.
TECHNICAL INFORMATION
Installation Guidelines
- Install the module into any compatible slot of a 1771 chassis.
- Maintain an ambient operating temperature between 0 and 60 degrees Celsius.
- House the open-style module in an enclosure suitable for indoor industrial environments.
TECHNICAL INFORMATION
Configuration Guidelines
- Use unscaled data formatting for a 1.6-millisecond scan rate across channels.
- Configure BCD data scaling when an 8-millisecond total update rate meets application requirements.
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 channel isolation rating on the 1771-OF04?
The module features tested channel isolation of 850 Volts DC for one second.
What are the output scan times for the 1771-OF04 module?
The scan rate is 1.6 milliseconds without scaling and 8 milliseconds across all channels with BCD scaling.
What is the reference price for an Allen-Bradley 1771-OF04 module?
Observed market reference pricing is approximately 389 USD for refurbished units. This figure is an indicative market reference only and does not represent a final quotation.
