ProductPRODUCT
Featured products
Contact Us
- Allen Bradley
- 1746-OB16
- PLC Module/Rack
- USA
- 145 × 35 × 140 mm
- 0.45kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 60
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
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.
| Company Information | |||
| [email protected] | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
Allen-Bradley 1746-OB16 Detailed Technical Overview
1. Product Overview
The Allen-Bradley 1746-OB16 is a 16-point digital DC output module used in the SLC 500 PLC system. It is designed to provide switching control for 24V DC field devices such as solenoids, relays, indicator lights, and small actuators.
The module uses sinking (NPN-style) transistor outputs, allowing it to switch the negative side of the load while the positive supply is externally provided. It is widely used in industrial automation systems requiring multiple DC output channels in a compact PLC rack.
Each output point is individually controlled by the PLC processor, enabling flexible and precise control of field devices.
2. Brand Information
- Brand: Allen-Bradley
- Industry: Industrial automation and PLC systems
- Product Type: Digital DC output module
The brand is well known in industrial control systems for durable and stable PLC hardware used in long-term manufacturing environments.
3. Product Series
- Series: SLC 500
- Category: Digital output module
- Type: DC sinking output module
The SLC 500 system is a modular PLC platform. The 1746-OB16 is designed to provide high-density DC output capability within this architecture.
4. Technical Parameters
Core Specifications Table
| Parameter | Value |
|---|---|
| Model | 1746-OB16 |
| Module Type | Digital DC Output |
| Series | SLC 500 |
| Number of Outputs | 16 |
| Output Type | Sinking (transistor) |
| Output Voltage Range | 10–30 V DC |
| Nominal Voltage | 24 V DC |
| Output Current (per point) | 0.5–1.0 A (typical limit) |
| Output Current (module total) | 8 A max |
| Off-State Leakage Current | ≤1 mA |
| On-State Voltage Drop | ~1.2 V DC |
| Turn-On Time | ~2 ms |
| Turn-Off Time | ~1 ms |
| Backplane Current (5V) | ~135–280 mA |
| Isolation Voltage | 1500 V AC (field to backplane) |
| Protection | Group fused outputs |
| Load Type | DC inductive / resistive 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) | 0.23 – 0.45 kg |
5. Product Functions and Applications
Functional Description
- Converts PLC digital commands into DC switching outputs
- Controls external 24V DC devices
- Provides multi-point output control in compact PLC systems
- Supports sinking transistor switching for stable operation
- Enables fast ON/OFF control for industrial devices
Typical Applications
- Industrial automation production lines
- Conveyor and packaging equipment
- Solenoid valve control systems
- Relay and contactor driving circuits
- Indicator lamp and alarm output systems
- General-purpose DC load switching
6. Product Advantages
1. High Channel Density
Sixteen outputs in one module reduce rack space and wiring complexity.
2. Fast Switching Performance
Millisecond-level response ensures precise control timing.
3. Solid-State Reliability
No mechanical wear compared to relay outputs, improving lifespan.
4. Electrical Isolation
Backplane isolation improves system safety and reduces noise interference.
5. Simple System Integration
Fully compatible with SLC 500 racks without additional configuration complexity.
7. Recommended Models (Same Series or Related)
SLC 500 Series Related Modules
| Model | Type | Channels | Signal Type | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1746-OB8 | DC Output | 8 | 24V DC | 145 × 35 × 140 | 0.30 |
| 1746-OB16E | DC Output | 16 | Sourcing | 145 × 35 × 140 | 0.35 |
| 1746-OB32 | DC Output | 32 | 24V DC | 145 × 35 × 140 | 0.36 |
| 1746-OA16 | AC Output | 16 | 120/240 VAC | 145 × 35 × 140 | 0.45 |
| 1746-OW16 | Relay Output | 16 | AC/DC Relay | 145 × 35 × 140 | 0.50 |
8. Recommended Popular Models (Same Brand)
Popular Automation Modules
| Model | Type | Channels | Voltage | Dimensions (mm) | Weight (kg) |
|---|---|---|---|---|---|
| 1756-L73 | Controller | — | 5V DC | 150 × 140 × 130 | 0.36 |
| 1769-L36ERM | Compact Controller | — | 24V DC | 120 × 90 × 70 | 0.30 |
| 1734-IE8C | Analog Input | 8 | 4–20 mA | 75 × 12 × 60 | 0.16 |
| 1769-OF8C | Analog Output | 8 | 0–10 V | 118 × 87 × 35 | 0.30 |
| 1756-EN2T | Ethernet Module | — | 5V DC | 150 × 140 × 130 | 0.32 |