Module Overview
The Allen-Bradley 1771-OA is an AC output module designed specifically for PLC5 programmable logic controllers. It provides eight independent output channels capable of 92–138V AC at 47–63Hz, therefore enabling precise control of industrial devices. Moreover, the module handles repeatable surge currents of up to 4A per output, ensuring stable performance in demanding industrial environments. In addition, its design supports robust AC switching across multiple applications.
This module efficiently energizes solenoids, indicator lights, horns, and relays, therefore increasing automation reliability. Moreover, its backplane current draw of 210mA at 5V DC reduces the impact on overall system power. Key functional highlights include:
- Fuse-blown indicators for easier maintenance
- Output status LEDs for clear operational monitoring
- Robust surge handling for high-reliability applications
- Consistent AC output switching for factory control panels
Consequently, the 1771-OA provides dependable AC control in challenging industrial settings.
Technical Specifications
| Parameter | Specification |
|---|---|
| Outputs per Module | 8 |
| Module Location | 1771 I/O chassis |
| Output Voltage Range | 92–138V AC @ 47–63Hz |
| Output Current Rating | 1.5A per output, max 6A/module |
| Surge Current | 4A per output, 8.3 ms, repeatable every sec |
| Load Current (min.) | 50 mA per output @ 120V AC |
| On-State Voltage Drop | 2V @ 100mA |
| Off-State Leakage Current | 5 mA per output @ 120V AC |
| Signal Delay (Off→On) | 1.0 ms |
| Signal Delay (On→Off) | 8.3 ms @ 60Hz |
| Power Dissipation | 10.7W max, 1.1W min |
| Thermal Dissipation | 36.6 BTU/hr max, 3.4 BTU/hr min |
| Backplane Current | 210 mA @ 5V DC ±5% |
| Isolation Voltage | Meets or exceeds UL 508 & CSA C22.2 No.142 |
| Operating Temp. | 0–50°C (32–140°F) |
| Storage Temp. | -40–85°C (-40–185°F) |
| Relative Humidity | 5–95% (non-condensing) |
| Wire Size | 14 AWG stranded max |
| Fuse Type | 2A, 250V Buss AGC-2 (Littlefuse 312002) |
Moreover, all parameters are designed to ensure precise and reliable AC output for industrial control systems.
System Integration
The 1771-OA module connects directly with 1771-IAD input modules and 1771-DA output modules, thus forming a complete PLC5 automation solution. In addition, it powers magnetic contactors, relays, and AC-powered panel components reliably. Therefore, correct installation and careful conductor routing ensure stable operation across multiple control panels.
Typical Applications
The 1771-OA module is ideal for:
- Solenoid-actuated devices
- Indicator lights and panel signals
- Industrial horns and sirens
- AC magnetic contactors and relays
Moreover, it provides consistent AC power, supporting process control, manufacturing lines, and factory automation panels.
Details
| Weight | 0.6 kg |
|---|
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