PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-OGD is a 16-point TTL output module for the PLC-5 platform. It mounts directly into a single slot of an Allen-Bradley 1771 Series B I/O chassis. The module features a logic switch for selecting between High = True and Low = True operations. Output voltage ranges from 2 to 5.25V DC ON and -0.2 to 0.8V DC OFF. The module provides 1mA sourcing current and 20mA sinking current per output.
External customer power requires 5V DC with less than 50mV peak-to-peak ripple for signal transmission. This external power source must supply up to 310mA maximum current to the module. The unit draws up to 230mA backplane current from the 1771 I/O chassis. Internal circuitry delivers 1500V AC RMS galvanic isolation between field wiring and the backplane. Output circuits include individual protection with a 0.5A, 250V normal blow fuse. Operating temperature ranges from 0 to 60 degrees Celsius with conformal circuit coating.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Backplane Current | 230 Miliamperes |
|---|
| Category | PLCs |
|---|
| Coating | Conformal Coat |
|---|
| DC Operating Voltage | 5.0-5.3 Volts |
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| Max Continuous Current Per Output | 0.20 Amperes (Sink) and 0.001 Amperes (Source) |
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| Model Status | Earlier Model |
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| Module Type | Digital DC Output Module |
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| Mounting | Rack Mountable |
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| Number of Outputs | 16 Outputs |
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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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| UPC | 612598003181 |
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| Voltage Category | 5 Volts DC, TTL |
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| Weight | 1.00 lbs (0.45 kg) |
|---|
| Wiring Arm | 1771-WH |
|---|
TECHNICAL INFORMATION
Features
- Provides 16 discrete Transistor-Transistor Logic output circuits in a single chassis slot.
- Features a selectable onboard switch for High = True and Low = True logic.
- Provides 1500V AC RMS galvanic isolation between field circuits and backplane logic.
- Protects field outputs using a 0.5A, 250V normal blow fuse.
- Draws a maximum of 230mA current from the I/O backplane.
TECHNICAL INFORMATION
Applications
- Interfacing PLC-5 systems with external Transistor-Transistor Logic compatible equipment.
- Driving external solid-state logic controllers and discrete microprocessor circuitry.
- Outputting low-voltage 5V DC control signals to external digital devices.
TECHNICAL INFORMATION
Connections / Interfaces
- Terminates field connections through the Allen-Bradley 1771-WH field wiring arm.
- Accommodates 14 AWG stranded shielded wiring such as Belden 8761.
- Requires wiring arm terminal screws torqued to 7 to 9 inch-pounds.
- Accepts customer-supplied 5V DC power via dedicated field wiring arm terminals.
TECHNICAL INFORMATION
Installation Guidelines
- Install module into a single slot of an Allen-Bradley 1771 Series B chassis.
- Place connector keying bands between backplane pins 16-18 and pins 26-28.
- Verify customer 5V DC power ripple stays below 50mV peak-to-peak.
- Tighten field wiring terminal screws to 7 to 9 inch-pounds.
TECHNICAL INFORMATION
Configuration Guidelines
- Set the onboard logic switch to High = True or Low = True operation.
- Configure switch position before inserting the module into the active chassis.
TECHNICAL INFORMATION
Compatibility
- Allen-Bradley 1771 Series B I/O Chassis
- Allen-Bradley PLC-5 Control Systems
- Allen-Bradley 1771-WH Field Wiring Arm
TECHNICAL INFORMATION
Lifecycle / Replacement Information
- Classified as an earlier model within the Allen-Bradley 1771 product line.
- Direct hardware maintenance utilizes identical 1771-OGD module catalog units.
TECHNICAL INFORMATION
Compliance and Certifications
- CSA Certified
- CE Marked
- UL Listed
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSAllen-Bradley 1771 Series B I/O Chassis Allen-Bradley PLC-5 Control Systems Allen-Bradley 1771-WH Field 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 function of the Allen-Bradley 1771-OGD?
It provides 16 discrete Transistor-Transistor Logic outputs for Allen-Bradley PLC-5 systems.
Which wiring arm does the 1771-OGD require?
The module requires the Allen-Bradley 1771-WH field wiring arm for terminations.
Does the 1771-OGD need external power?
Yes. It requires a customer-supplied 5V DC supply delivering up to 310mA.
What is the reference price for the 1771-OGD?
Observed market reference pricing is approximately $119.00 USD for refurbished units. This figure is an indicative market reference price only and is not a final quotation.
