Allen-Bradley 1756-OA16 ControlLogix AC Output Module

Allen-Bradley 1756-OA16 ControlLogix AC Output Module

Product Introduction 1756-OA16

The 1756-OA16 is a versatile digital AC output module from the Allen-Bradley ControlLogix family. It provides sixteen mechanically fused output channels. These channels are arranged in two groups of eight. The module operates across a wide voltage range of 74 to 265V AC. It is designed for direct installation in any ControlLogix chassis. This makes it suitable for both local and remote I/O applications.

Technical Specifications 1756-OA16

The 1756-OA16 module delivers sixteen discrete output points. Each point is mechanically fused for added protection. The output voltage range covers 74 to 265V AC at 47 to 63 Hz. The maximum output current per point is 0.5 A at 60 °C. Per group, it handles up to 2 A at 60 °C. The total module current rating is 4 A at the same temperature. Additionally, the minimum load current is 10 mA per point.

Furthermore, the module features programmable output delay times. The off-to-on delay is 9.3 milliseconds at 60 Hz. The on-to-off delay is 11 milliseconds at 50 Hz. This flexibility allows fine-tuning for specific application needs. The maximum on-state voltage drop is 1.5V at 0.5 A. The maximum off-state leakage current is 3 mA per point.

The 1756-OA16 also provides diagnostic capabilities. It uses fault word tags to alert operators. The tag named "FuseBlown" indicates a blown point or group fuse. Another tag, "FieldPwrLoss", signals a loss of field power. These features simplify troubleshooting and reduce downtime. The module's pilot duty rating is 0.5 A, making it suitable for inductive loads.

Electrical and Environmental Parameters

The 1756-OA16 draws a backplane current of 400 mA at 5V DC and 2 mA at 24V DC. Total backplane power dissipation is 2.1 Watts. Maximum power dissipation is 6.5 Watts at 60 °C. Thermal dissipation is rated at 22.17 BTU/hour. The isolation voltage is 50V continuous.

The module operates reliably in a temperature range of 0 to 60 °C (32 to 140 °F). Storage temperature is -40 to 85 °C (-40 to 185 °F). It functions in 5-95% non-condensing relative humidity. The enclosure is open-style for cabinet mounting.

Compatibility and Applications

The 1756-OA16 is compatible with all ControlLogix processors. It works with any ControlLogix communication module. It can also operate alongside GuardLogix modules for safety applications. This module is ideal for controlling solenoids, valves, cylinders, relays, and magnetic contactors. For higher inductive loads with significant inrush currents, Rockwell recommends using an interposing circuit. This external isolation protects the module from potential damage.

Installation Guidelines

Install the 1756-OA16 in any available slot of a ControlLogix chassis. First, ensure the system power is completely off before installation. Align the module with the slot guides in the chassis. Slide it in firmly until it seats against the backplane. Secure it by tightening the retaining screws. Next, install a compatible removable terminal block. The module supports the 1756-TBSH and 1756-TBNH terminal blocks. Wire each output channel according to your application requirements. Finally, apply power and configure the module using the ControlLogix software.

Packaging List

The package for the 1756-OA16 includes the following items:

• Allen-Bradley 1756-OA16 ControlLogix AC Output Module (1 unit)

• Installation instructions sheet (paper copy)

• Anti-static protective packaging

Shipping Information

All orders are shipped via FedEx, UPS, or DHL. These carriers provide fast and trackable delivery worldwide.

Frequently Asked Questions

Q1: What is the output voltage range of the Allen-Bradley 1756-OA16?
The 1756-OA16 operates across a wide voltage range of 74 to 265V AC at 47 to 63 Hz. This covers both 120V and 240V AC systems.

Q2: How many output points does the 1756-OA16 provide?
This module provides sixteen output points. They are arranged as two groups of eight mechanically fused channels.

Q3: What does the "FuseBlown" fault tag indicate on the 1756-OA16?
The "FuseBlown" tag alerts you when a point or group fuse has blown. This helps quickly identify and resolve output issues.

Q4: Can the 1756-OA16 control inductive loads like solenoids?
Yes, the 1756-OA16 has a pilot duty rating of 0.5 A. It is well-suited for energizing solenoids, valves, cylinders, and relays.

Q5: Which terminal blocks are compatible with the 1756-OA16 module?
The 1756-OA16 supports both the 1756-TBSH and 1756-TBNH removable terminal blocks. Both are sold separately.