1756-OA16 Allen-Bradley ControlLogix 16-Point AC Output Module

1756-OA16 Allen-Bradley ControlLogix 16-Point AC Output Module 1756-OA16 Sale

Buy the 1756-OA16 Allen-Bradley ControlLogix digital AC output module. Check technical parameters, group fusing details, and fast global shipping.

1756-OA16 Industrial Engineering Audit: Global PLC Spare HUB Review

The 1756-OA16 functions as a high-performance discrete output module designed for demanding plant-floor environments. Operating within the ControlLogix framework, this hardware provides multi-channel AC switching with integrated group-level mechanical fusing.

System Architecture & Technical Specifications

• Manufacturer: Rockwell Automation
• Brand / Series: Allen-Bradley / ControlLogix 1756
• Catalog Number: 1756-OA16
• Module Classification: Digital AC Output Module (16 Points, 2 Groups of 8)
• Operating Voltage Range: 74 to 265 VAC (47 to 63 Hz)
• Nominal Output Voltage: 120 / 240 VAC
• Current Per Point: 0.5 Amps at 60 degrees Celsius
• Current Per Module: 4 Amps max at 60 degrees Celsius
• Minimum Load Current: 10 mA per point
• OFF-State Leakage Current: 3 mA maximum per point
• Signal Switching Latency: 9.3 ms at 60 Hz (OFF to ON), 11 ms at 50 Hz (ON to OFF)
• Backplane Power Consumption: 400 mA at 5.1 VDC, 2 mA at 24 VDC (Total 2.1 Watts)
• Thermal Dissipation: 6.5 Watts max at 60 degrees Celsius (22.17 BTU/hr)
• Compatible Terminal Blocks (RTB): 1756-TBCH, 1756-TBSH, 1756-TBNH
• Compatible Chassis Architecture: 1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17

Global PLC Spare HUB's Insight: Installation & Maintenance Guidelines

Deploying the 1756-OA16 demands careful consideration of thermal limits and backplane load distribution within local or remote ControlLogix racks. Because each group of eight points shares a mechanical fuse, maintenance technicians should map high-draw inductive actuators evenly across both groups to prevent nuisance trip events. Utilize compatible removable terminal blocks like the 1756-TBCH or 1756-TBSH to secure clean field wiring terminations without blocking front-panel diagnostic access.

Diagnostic Capabilities & Fault Management

The 1756-OA16 incorporates advanced software-driven diagnostic tags to minimize industrial downtime. The FuseBlown tag instantly signals when a group or point fuse opens due to an overcurrent condition. Additionally, the FieldPwrLoss tag flags any unexpected drop in external AC source voltage across the output terminals. Front-panel LED indicators illuminate immediately when a channel receives an active command signal from the processor.

Typical Applications & Industrial Environments

Automation engineers deploy this hardware across heavy manufacturing lines, material handling systems, and automated packaging equipment. It directly energizes 120VAC or 240VAC inductive loads including solenoid valves, pneumatic cylinders, pilot horns, and magnetic motor contactors.

Fulfillment, Warranty & Logistics

• Delivery Couriers: Fast global dispatch via FedEx, UPS, and DHL
• Processing Window: Orders ship within 24 to 48 hours
• Hardware Assurance: Backed by a comprehensive 12-month replacement warranty

Frequently Asked Questions

Question: How does the mechanical fusing structure on the 1756-OA16 protect field wiring?

Answer: The module divides its sixteen channels into two groups of eight, with each group protected by a dedicated mechanical fuse. If an overcurrent event occurs on a specific channel, it trips the group fuse, preventing damage to the broader backplane wiring infrastructure.

Question: What corrective action is required when the FuseBlown diagnostic tag triggers in software?

Answer: Technicians must inspect the connected field loads on that specific group for short circuits or ground faults, replace the fused sub-assembly or module channel group as necessary, and clear the fault word before resuming automated execution.

Question: Can the 1756-OA16 safely drive high-inrush inductive loads directly without external support?

Answer: While it features a pilot duty rating of 0.5A, driving heavy inductive coils with excessive inrush currents requires an external interposing relay circuit to isolate the internal switching elements from destructive voltage spikes.

Question: What programming parameters govern the module behavior during a sudden CPU communication loss?

Answer: Engineers can configure the 1756-OA16 to transition into a designated program mode state—holding its last active state, turning all outputs ON, or defaulting to an OFF state.

Question: What key criteria should guide purchasing decisions when sourcing a replacement 1756-OA16 unit?

Answer: Buyers should verify backplane power budget availability for the 400mA 5.1V draw, confirm terminal block compatibility with existing cabinet wiring, and purchase from a trusted supplier offering rigorous hardware testing and a 12-month warranty.

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