PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-ODZ is a PLC-5 digital output module designed for controlling AC field devices. This unit provides eight isolated outputs arranged in four sets of two channels. The hardware operates across an AC line voltage range of 92 to 138 Volts AC. Internal circuitry uses optical coupling to minimize electrical noise transmission to the system backplane.
Integrated surge suppression protects output circuits from high-voltage line transients. The module draws 350 mA of current from the 1771 I/O chassis backplane. Each output channel supports up to 2 A continuous current. A front-facing indicator array displays channel operation and blown-fuse status for maintenance troubleshooting.
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 | 1.44 lbs (0.65 kg) |
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| Module Type | Digital AC Output Module |
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| Number of Outputs | 8 Outputs (4 sets of 2) |
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| Voltage Category | 120 Volts AC |
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| AC Operating Voltage | 92-138 Volts |
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| Backplane Current | 350 Miliamperes |
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| Max Continuous Current Per Output | 2 Amperes |
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| Max Current Per Module | 6 Amperes |
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| Wiring Arm | 1771-WH |
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| Model Status | Earlier Model |
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| Data Format | BDC or Natural Binary |
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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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| Mounting | Rack Mountable |
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TECHNICAL INFORMATION
Features
- Eight isolated AC output channels arranged in four groups of two.
- Operating voltage range of 92 to 138 Volts AC at 120 Volts AC nominal.
- Maximum continuous current capacity of 2 A per output and 6 A per module.
- Front panel includes eight status indicators and eight blown-fuse indicators.
- Optical isolation and filtering reduce field noise transmission to the backplane.
- Integrated transient surge suppression protects field-side switching circuits.
TECHNICAL INFORMATION
Applications
- On-off switching of AC motor contactors and control relays.
- Actuation of industrial AC pneumatic and hydraulic solenoid valves.
- Control of pilot lights and audible plant annunciators.
TECHNICAL INFORMATION
Connections / Interfaces
- Plugs into any standard 1771 I/O chassis slot.
- Connects to field wiring using a 1771-WD or 1771-WH wiring arm.
- Field wiring disengagement is unnecessary during module replacement when using the wiring arm.
TECHNICAL INFORMATION
Installation Guidelines
- Insert module into a single 1771 I/O chassis slot.
- Position chassis keying bands between pins 4 and 6 on the lower connector.
- Position chassis keying bands between pins 34 and 36 on the upper connector.
- Seat the module firmly against the backplane connector before engaging retaining latches.
TECHNICAL INFORMATION
Configuration Guidelines
- Supports 1/2-slot, 1-slot, and 2-slot addressing modes in the PLC-5 chassis.
- Consumes eight image bits in the PLC data table.
- Compatible with natural binary or binary-coded decimal data formats.
TECHNICAL INFORMATION
Compatibility
- Mounts in any Allen-Bradley 1771 universal I/O chassis.
- Controlled by Allen-Bradley PLC-5 programmable controllers.
- Shares standard functional specifications with the 1771-OD module.
TECHNICAL INFORMATION
Lifecycle / Replacement Information
- The 1771-ODZ represents an earlier production design within the 1771 series.
- Can replace older 1771-OZ modules directly in existing racks.
- Shares physical form factor and operating ratings with model 1771-OD.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSMounts in any Allen-Bradley 1771 universal I/O chassis. Controlled by Allen-Bradley PLC-5 programmable controllers. Shares standard functional specifications with the 1771-OD module.
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 primary function of the Allen-Bradley 1771-ODZ?
The module switches 120V AC loads such as solenoids, contactors, and indicators via PLC-5 commands.
What wiring arm is required for the 1771-ODZ module?
The module uses a 1771-WD or 1771-WH wiring arm for terminal wiring connections.
What do the front indicators on the 1771-ODZ signify?
The top eight red LEDs show output status. The bottom eight orange LEDs indicate blown fuses.
What are the slot addressing options for the 1771-ODZ?
The module supports 1/2-slot, 1-slot, and 2-slot I/O rack addressing modes.
