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- 1756-OW16I
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- 14.5 × 5.6 × 14.0 cm
- 0.45kg
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1756-OW16I Detailed Product Overview
Product Introduction
The 1756-OW16I is a 16-point isolated relay output module designed for industrial automation systems requiring flexible switching of AC or DC loads with electrical isolation between channels. It belongs to the ControlLogix modular automation platform and is widely used in control systems where relay-based switching and signal isolation are required.
This module provides 16 independent relay output channels. Each channel operates as a dry contact relay, allowing it to switch a wide range of voltages and load types, including AC and DC circuits. The isolation design improves safety and reduces electrical interference between outputs.
The module is installed in a ControlLogix chassis and communicates with PLC processors through the system backplane, forming part of a complete automation control system.
Brand Information
| Item | Description |
|---|---|
| Brand | Industrial Automation Brand |
| Product Platform | ControlLogix |
| Product Type | Relay Output Module |
| Main Function | AC/DC Load Switching |
| Installation Method | Chassis Mount |
| Output Type | Isolated Relay Contact Output |
| Application Category | Industrial Automation |
| System Architecture | Modular PLC System |
Product Series Introduction
ControlLogix Series
The ControlLogix platform is a modular industrial automation system designed for complex control applications requiring scalability, flexibility, and high reliability.
Core capabilities include:
- PLC logic execution
- Digital and analog I/O control
- Motion and process automation
- Industrial communication networks
- System diagnostics and monitoring
Key characteristics:
- High-speed backplane communication
- Modular expansion design
- Strong industrial reliability
- Flexible system configuration
- Long lifecycle operation
- High integration efficiency
The 1756-OW16I belongs to the isolated relay output family, designed to provide safe switching of mixed AC/DC loads with strong electrical separation between channels.
It is widely used in:
- Industrial machine control
- Packaging equipment
- Conveyor systems
- Material handling systems
- HVAC control systems
- Process automation
- General manufacturing systems
1756-OW16I Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1756-OW16I |
| Product Type | Isolated Relay Output Module |
| Series | ControlLogix |
| Number of Outputs | 16 Channels |
| Output Type | Relay (Dry Contact) |
| Contact Form | Normally Open (NO) |
| Switching Voltage | Up to 250V AC / 30V DC |
| Switching Current | 2 A per point (resistive load) |
| Contact Material | Silver alloy |
| Isolation Type | Channel-to-channel isolation |
| Isolation Voltage | 1500V AC (relay isolation) |
| Mechanical Life | >10 million operations |
| Electrical Life | ~300,000 operations (rated load) |
| Response Time | ON ~10 ms / OFF ~5 ms |
| Backplane Current @ 5.1V DC | ~120 mA |
| Power Dissipation | ~3.5 W |
| Thermal Dissipation | ~12 BTU/hr |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5%–95% non-condensing |
| Wiring Method | Removable terminal block |
| Contact Status Indication | LED per channel |
| Dimensions | 14.5 × 5.6 × 14.0 cm |
| Weight kg（ ） | 0.45 kg |
Product Features
1. Relay-Based Isolation Design
Each output channel is electrically isolated through relay contacts, allowing safe switching of different voltage levels.
2. AC and DC Load Compatibility
Supports both AC and DC switching, making it highly flexible for industrial applications.
3. High Channel Density
16 relay outputs in one module reduce system size and wiring complexity.
4. Strong Electrical Isolation
Relay contacts provide excellent separation between field devices and control system.
5. LED Status Indicators
Each channel has LED indication for quick diagnostics and monitoring.
Product Advantages
Flexible Load Switching
Supports a wide range of industrial loads including motors, lamps, and solenoids.
High Electrical Safety
Relay isolation ensures safe separation between control and field circuits.
Simple Maintenance
Mechanical relay structure is easy to diagnose and replace.
Multi-Voltage Capability
Can switch both AC and DC circuits without modification.
Compact Design
16 channels in one module reduce panel space requirements.
Reliable Industrial Operation
Suitable for long-term operation in industrial environments.
Main Applications
Industrial Machine Control
Used for switching motors, solenoids, and actuators.
Packaging Systems
Controls conveyors, sealing machines, and mechanical devices.
HVAC Systems
Used for fan, compressor, and damper switching.
Material Handling Systems
Controls lifting equipment and conveyor systems.
Process Automation
Used in auxiliary control circuits.
General Manufacturing
Widely used in factory automation systems.
Industrial Performance Summary
| Capability | Benefit |
|---|---|
| 16 Relay Outputs | High-density switching |
| AC/DC Compatibility | Flexible application |
| Strong Isolation | High safety level |
| LED Indicators | Easy diagnostics |
| Mechanical Durability | Long lifespan |
| Modular Design | Easy integration |
| Industrial Grade | Reliable operation |
| Simple Wiring | Reduced complexity |
Recommended Related Models (Same Series / Similar Function)
| Model | Type | Channels | Output Type | Dimensions | Weight kg（ ） | Feature |
|---|---|---|---|---|---|---|
| 1756-OW16I | Relay output | 16 | Dry contact | 14.5 × 5.6 × 14.0 cm | 0.45 kg | Isolated relay switching |
| 1756-OB16E | DC output | 16 | Electronic fused | 14.5 × 5.6 × 14.0 cm | 0.38 kg | Protection design |
| 1756-OB16 | DC output | 16 | Transistor | 14.5 × 5.6 × 14.0 cm | 0.36 kg | Stable switching |
| 1756-OB32 | High-density output | 32 | DC | 11.1 × 3.8 × 30.0 cm | 0.26 kg | Large capacity |
| 1756-OB16D | Diagnostic output | 16 | DC | 14.5 × 5.6 × 14.0 cm | 0.40 kg | Fault detection |
Recommended Popular Models (Same Platform)
| Model | Type | Function | Dimensions | Weight kg（ ） | Advantage |
|---|---|---|---|---|---|
| 1756-L81E | PLC CPU | Control system | 14.5 × 5.6 × 14.0 cm | 0.45 kg | High processing power |
| 1756-EN2TR | Ethernet module | Communication | 14.5 × 5.6 × 14.0 cm | 0.29 kg | Stable network |
| 1756-IB16 | Input module | Signal input | 14.5 × 5.6 × 14.0 cm | 0.27 kg | Reliable sensing |
| 1756-OF8 | Analog output | Signal output | 11.1 × 3.8 × 30.0 cm | 2.0 kg | Multi-channel analog |
| 1756-PA75 | Power module | Power supply | 14.5 × 5.6 × 14.0 cm | 0.90 kg | System stability |
Installation Notes
- Install in ventilated cabinet
- Ensure proper grounding
- Separate relay wiring from signal wiring
- Avoid overload beyond rated current
- Maintain proper heat dissipation
Maintenance Notes
| Item | Recommendation |
|---|---|
| Relay inspection | Check wear condition |
| Terminal tightening | Periodic check |
| Dust cleaning | Regular maintenance |
| Load testing | Verify switching |
| Indicator check | Monitor LED status |
| Environment control | Avoid humidity extremes |
Overall Summary
The 1756-OW16I is a high-density 16-channel relay output module designed for industrial automation systems requiring flexible AC/DC switching and strong electrical isolation. Its relay-based architecture, multi-voltage capability, and high channel count make it suitable for a wide range of industrial control applications where reliability and flexibility are essential.