Allen-Bradley 1756-OW16I Relay Output Module | 16-Channel, 5-250V AC/DC, 2A, Isolated Specs

Allen-Bradley 1756-OW16I Relay Output Module | 16-Channel, 5-250V AC/DC, 2A, Isolated Specs

Allen-Bradley 1756-OW16I ControlLogix relay output module specifications. 16-channel isolated relay output, 5-250V AC/DC, 2A per channel, IP20. For industrial control applications.

Product Overview

The Allen-Bradley 1756-OW16I​ is a 16-channel isolated relay output module​ from the ControlLogix series, designed for industrial control applications. This module provides 16 Form A (SPST-NO) relay outputs​ with individual channel isolation, capable of switching 5-250V AC or DC loads at 2A per channel. The "1756" designation indicates the ControlLogix I/O module series, "OW16I" specifies the 16-channel isolated relay output configuration. This module interfaces ControlLogix controllers to various AC/DC loads such as contactors, solenoids, motors, and indicators, providing flexible and reliable output switching for machine control, process automation, and manufacturing systems.

Technical Specifications

Note: Specifications are based on Allen-Bradley 1756 series technical documentation. The "1756-OW16I" model specifically indicates 16-channel isolated relay output configuration. Actual specifications may vary slightly depending on production batch.

Model Number Decoding (1756-OW16I)

• 1756:​ Series designation (ControlLogix I/O module series)

• OW16:​ Module type (OW = relay output, 16 = 16 channels)

• I:​ Configuration (I = isolated channels)

Note:​ The "OW" prefix indicates relay output functionality. The "16" specifies 16 output channels. The "I" suffix indicates isolated channels (each relay isolated from others and from backplane). This module is designed for use in ControlLogix chassis (1756-A4, A7, A10, A13, A17) and requires a ControlLogix processor for operation.

Key Features

• 16 Isolated Relay Outputs:​ Sixteen Form A (SPST-NO) relay contacts

• Individual Channel Isolation:​ 250V AC isolation between channels and backplane

• Wide Voltage Range:​ Switches 5-250V AC or DC loads

• High-Density Design:​ Sixteen channels in single-slot footprint

• Status Indicators:​ Individual LED indicators for each output channel

• Removable Terminals:​ Spring clamp terminal blocks for easy wiring

• Flexible Load Switching:​ Compatible with AC and DC loads up to 250V

• Industrial Grade:​ Designed for harsh industrial environments

• Compact Design:​ Single-slot module for high-density installation

• High Reliability:​ Proven relay technology with long mechanical life

• International Certifications:​ Multiple agency approvals for global use

Load Ratings and Characteristics

Typical Applications

• Machine Control:​ Contactor and starter coil control

• Process Automation:​ Solenoid valve and actuator control

• Material Handling:​ Conveyor motor control and diverter actuation

• Packaging Machinery:​ Heater, sealer, and glue valve control

• HVAC Control:​ Fan, pump, and damper motor control

• Building Automation:​ Lighting control and equipment sequencing

• Water/Wastewater:​ Pump control and valve actuation

• Automotive Manufacturing:​ Production line equipment control

• Test Equipment:​ Load switching and circuit control

• Energy Management:​ Load shedding and power control

Important Technical Notes

1. System Requirements:​ Requires ControlLogix chassis and ControlLogix processor. Compatible with CompactLogix systems with 1769 adapter.

2. Load Ratings:​ Ratings are for resistive loads. Derate for inductive, capacitive, or lamp loads. Consult derating curves for specific applications.

3. Inductive Load Suppression:​ Use appropriate suppression (RC snubbers, varistors, MOVs, or diodes) for inductive loads to protect relay contacts and extend life.

4. Inrush Current:​ Limit inrush current to 10A maximum for 20 ms. Use inrush current limiters for high inrush loads.

5. Isolation:​ Each channel is isolated from others and from backplane. Maximum continuous isolation voltage is 250V AC.

6. Wiring:​ Use proper wire size (12-24 AWG) and follow NEC/IEC standards. Separate high-voltage and low-voltage wiring in separate conduits.

7. Fusing:​ External fusing required for each output circuit as per local electrical codes and safety standards. Consider fast-acting fuses for protection.

8. Switching Frequency:​ Maximum switching frequency depends on load type and current. High frequency operation reduces contact life.

9. Environmental Conditions:​ Install in appropriate enclosure for protection. IP20 provides limited protection against dust and moisture.

10. Maintenance:​ Periodically check connections, LED status, and relay operation. Monitor relay contact wear for high-cycle applications.

Note: For complete installation guidelines, wiring diagrams, configuration instructions, and detailed technical data, consult the official Allen-Bradley 1756 Series Technical Manual. Always verify the exact model number configuration with the manufacturer, as notation variations may occur.