Product Overview

The 1756-OA16K belongs to the ControlLogix Series. Its product type is an AC Output Module. The product classification is I/O Modules. The current price for this item is ¥3,850 RMB, and the product gross weight is 0.42 kg.

Rockwell Automation designed this module under the Allen-Bradley brand for the ControlLogix platform. The 1756-OA16K provides 16 output points organized as two groups of 8 points each (mechanically fused/group outputs). Each group uses a 20-pin connection. The module features conformal coating for enhanced protection against moisture, dust, and chemicals. Therefore, this output module suits harsh industrial environments.

Technical Specifications

Output Channels and Configuration

The module provides 16 AC output points . Outputs are organized as two groups with 8 points per group. Each group is mechanically fused for protection. The conformal coating protects circuit boards from environmental contaminants. This coating extends module life in humid or corrosive atmospheres.

Voltage Ratings

The nominal voltage rating is 120-140 Volts AC . The operating voltage range spans 74 to 265 Volts AC , offering exceptional flexibility. This wide range accommodates various global power systems, including 110V, 120V, 220V, and 240V AC supplies. Therefore, the 1756-OA16K works in most international installations.

Current Ratings

At 60°C , each output point handles 0.5 Amps maximum. The total module current rating at 60°C reaches 4 Amps across all 16 points. For higher ambient temperatures, consider derating the output current. Always stay within these limits for reliable operation.

Power Dissipation

Maximum power dissipation reaches 6.5 Watts at 60°C . This thermal load affects cabinet cooling requirements. Ensure adequate ventilation around the module. For high-density installations, calculate total heat load from all modules.

Backplane Current

The backplane current draw at 5 Volts is 400 milliamps (0.4 A) . This moderate current draw allows multiple modules in the same chassis. Verify your power supply capacity when populating the chassis with many I/O modules.

Isolation Voltage

The isolation voltage rating is 50 Volts continuous . This isolation protects the backplane and controller from field wiring faults. For specific isolation testing details, consult the product manual.

Compatible Removable Terminal Blocks

Compatible removable terminal blocks include 1756-TBNH and 1756-TBSH . These terminal blocks simplify field wiring and module replacement. The 20-pin connector supports the two groups of 8 outputs each.

Enclosure Rating

The module has no enclosure (open-style). Install the 1756-OA16K inside a suitable control cabinet. The cabinet should provide protection against dust, moisture, and accidental contact.

Installation Guide

Follow these steps to install your 1756-OA16K correctly.

1. Power Down the Chassis: Disconnect power from the ControlLogix chassis completely. This prevents electrical shock and module damage.

2. Select a Slot: Choose an available slot in the ControlLogix chassis. The 1756-OA16K occupies one slot.

3. Insert the Module: Align the 1756-OA16K with the slot guides. Push firmly until the module seats into the backplane connector.

4. Secure the Module: Tighten the retaining screws at the top and bottom. This secures the output module in place.

5. Wire the Terminal Block: Connect your AC loads to the appropriate terminals on the 1756-TBNH or 1756-TBSH terminal block. Observe correct wiring for your voltage and current requirements.

6. Install the Terminal Block: Plug the wired terminal block into the front of the 1756-OA16K . Ensure it seats fully and locks in place.

7. Apply Power: Restore power to the ControlLogix chassis. Verify the module powers up without errors.

8. Configure Outputs: Use Studio 5000 programming software to configure the output module. Set up the I/O tags for your application.

9. Test Operation: Energize each output channel individually. Confirm that each connected load responds correctly.

Package List

• 1 x 1756-OA16K ControlLogix AC Output Module (16-point)

• 1 x Conformal coating (pre-applied to circuit board)

• 2 x Module retaining screws (pre-installed)

• 1 x Installation instruction manual

*Note: Removable terminal block (1756-TBNH or 1756-TBSH) and field wiring are sold separately.*

Frequently Asked Questions (FAQ)

1. What voltage range does the 1756-OA16K support?
The module operates from 74 to 265 Volts AC . This wide range includes 110V, 120V, 220V, and 240V AC systems. The nominal rating is 120-140V AC.

2. How many output points does this module provide?
The 1756-OA16K provides 16 output points organized as two groups of 8 points each . Each group is mechanically fused for protection.

3. What is the current rating per output point?
At 60°C , each output point handles 0.5 Amps maximum. The total module current at 60°C reaches 4 Amps across all points. Derate for temperatures above 60°C.

4. What does conformal coating do for this module?
The conformal coating protects the circuit board from moisture, dust, and chemical contaminants. This coating extends module life in harsh industrial environments. Therefore, the 1756-OA16K suits applications with high humidity or airborne contaminants.

5. What removable terminal blocks work with the 1756-OA16K ?
Compatible terminal blocks include the 1756-TBNH and 1756-TBSH . Both use a 20-pin connector supporting the two groups of 8 outputs. Choose the style that best suits your wiring needs.