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- Allen Bradley
- 1746-OA16
- PLC Module/Rack
- USA
- 145 × 35 × 140 mm
- 0.45kg
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
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We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
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Allen-Bradley 1746-OA16 Detailed Technical Overview
1. Product Overview
The Allen-Bradley 1746-OA16 is a digital AC output module used in the SLC 500 PLC system. It is designed to control AC-powered field devices by switching 120/240V AC signals directly from PLC logic commands.
The module provides 16 output points arranged in two isolated groups of eight channels. Each channel uses solid-state TRIAC switching technology, making it suitable for general-purpose industrial switching applications.
It is widely used in legacy automation systems where reliable AC load switching is required without external relays.
2. Brand Information
- Brand: Allen-Bradley
- Industry: Industrial automation and control systems
- Product Type: Digital AC output module
The brand is recognized for durable PLC components designed for long-term industrial operation and stable performance in harsh environments.
3. Product Series
- Series: SLC 500
- Category: Digital output module
- Module Type: AC output (TRIAC-based)
The SLC 500 platform is a modular PLC system. The 1746-OA16 is specifically designed for high-density AC output switching within this architecture.
4. Technical Parameters
Core Specifications Table
| Parameter | Value |
|---|---|
| Model | 1746-OA16 |
| Module Type | Digital AC Output |
| Series | SLC 500 |
| Number of Outputs | 16 (2 groups × 8) |
| Output Type | AC TRIAC |
| Output Voltage Range | 85–265 VAC |
| Nominal Voltage | 120/240 VAC |
| Frequency | 47–63 Hz |
| Output Current per Point | 0.5 A @ 30°C / 0.25 A @ 60°C |
| Max Module Current | 8 A @ 30°C / 4 A @ 60°C |
| Off-State Leakage Current | ~2 mA |
| Output Delay ON | ~11 ms |
| Output Delay OFF | ~1 ms |
| Backplane Current (5V) | 370 mA |
| Isolation | 500 V DC (logic to field) |
| Switching Device | TRIAC (solid-state) |
| Load Type | Resistive / general AC loads |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5–95% non-condensing |
| Dimensions (mm) | 145 × 35 × 140 |
| Weight (kg) | 0.45 kg |
5. Product Functions and Applications
Functional Description
- Switches AC electrical loads directly from PLC control signals
- Controls external devices such as solenoids, lamps, and contactors
- Provides high-density output switching in compact PLC racks
- Uses TRIAC-based solid-state switching for silent operation
- Supports grouped output isolation for improved system protection
Typical Applications
- Industrial automation production lines
- Motor starter and contactor control circuits
- Conveyor systems and packaging machinery
- Lighting control systems in factories
- General-purpose AC switching in PLC-controlled environments
- Process automation equipment requiring multiple AC outputs
6. Product Advantages
1. High Output Density
Sixteen outputs in a single module reduce cabinet space and wiring complexity.
2. Solid-State Reliability
TRIAC switching eliminates mechanical wear and increases service life.
3. Fast Switching Response
Milliseconds-level switching ensures responsive control behavior.
4. Electrical Isolation
Grouped isolation improves system protection and reduces interference risk.
5. Simple Integration
Direct compatibility with SLC 500 chassis allows easy system expansion.
7. Recommended Models (Same Series or Related)
SLC 500 Series Related Modules
| Model | Type | Channels | Signal Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1746-OB16 | Digital DC Output | 16 | 24V DC | 145 × 35 × 140 | 0.34 |
| 1746-OB32 | Digital DC Output | 32 | 24V DC | 145 × 35 × 140 | 0.36 |
| 1746-OW16 | Relay Output | 16 | AC/DC Relay | 145 × 35 × 140 | 0.50 |
| 1746-IB16 | Digital Input | 16 | 24V DC | 145 × 35 × 140 | 0.32 |
| 1746-NO4I | Analog Output | 4 | 0–20 mA | 145 × 35 × 140 | 0.32 |
8. Recommended Popular Models (Same Brand)
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| 1756-L73 | Controller | — | 5V DC | 150 × 140 × 130 | 0.36 |
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| 1756-EN2T | Ethernet Module | — | 5V DC | 150 × 140 × 130 | 0.32 |