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Product information
Specifications

Allen-Bradley 1756-OF8

Introduction: The Allen-Bradley 1756-OF8 ControlLogix Analog Output Module is a premium industrial-grade signal execution element engineered and manufactured 100% in the United States (US) by Rockwell Automation. Within advanced automation loops and distributed process applications, delivering real-time, highly deterministic continuous commands forms the operational cornerstone of factory performance. The 1756-OF8 module functions as the high-accuracy control gateway, transforming internal digital register matrices from the CPU via the chassis backplane into physical analog current loops or voltage scales tasked with driving machinery actuators out on the plant floor.

The 1756-OF8 variant maximizes application flexibility with a 8-point analog output layout, allowing each channel to be independently programmed to drive standard industrial signals including Voltage (±10V) or Current loops (0-20 mA, 4-20 mA). Driven by a high-efficiency DAC architecture delivering 15-bit conversion resolution, it provides seamless, ultra-smooth signal scaling to eliminate harsh spikes that could shock mechanical link components. Heavy optical galvanic barrier layers isolate internal backplane logic from external wiring fields, complemented by real-time open-wire loop detection for current loops and short-circuit protection for voltage lines. Featuring full Removal and Insertion Under Power (RIUP) certification, it ensures field technicians can hot-swap operational blocks safely without requiring a complete plant grid shutdown.

Key Features & Technical Specifications:

Manufacturer: Allen-Bradley / Rockwell Automation
Product Series: ControlLogix Analog I/O Hardware Family
Model Code: 1756-OF8
Device Type: 8-Channel Analog Voltage / Current Output System Module
Outputs Capacity Layout: 8 independently isolated-by-software output points (8 channels).
Signal Range Compatibility: * Voltage Scales: ±10V nominal (extends to -10.5V to +10.5V full scale).
- Current Loops: 0...20 mA, 4...20 mA (extends to 0 to 21 mA full scale).
Digital Conversion Resolution: 15-bit resolution across the signal spectrum for high-accuracy tracking.
Circuit Protection Arrays: Integrated open-loop wire break indicators for current transmission, output short-circuit clamping for voltage loops, and heavy internal optocoupler isolation.
Mechanical Integration: Standard slide-in plug-and-play profile tailored for any open slot assignment inside a 1756 chassis rack. Interfaces field wire drops via a dedicated Removable Terminal Block assembly (RTB, such as 1756-TBCH or 1756-TBNH, sourced separately).
Country of Origin: 100% Made in the United States.