1756-OF8 | Allen-Bradley | ControlLogix Analog Output Module

Product Description

The 1756-OF8 is an 8-channel analog output module from Allen-Bradley’s ControlLogix platform. Designed for high-precision analog signal control, it delivers configurable voltage or current outputs with superior accuracy and rapid response time, making it ideal for process automation and motion control applications.

This module supports both ±10V and 0–20 mA ranges, providing flexibility across a wide range of industrial systems. Built-in electronic protection, fast settling time, and minimal power loss ensure consistent and stable performance under demanding operating conditions.

Technical Specifications

• Manufacturer: Allen-Bradley

• Model / Part Number: 1756-OF8

• Product Type: Analog Output Module

• Number of Outputs: 8 configurable voltage or current channels

• Output Range: ±10 V DC, 0–20 mA DC

• Nominal Accuracy (at 25 °C): ±0.05 % of full scale (4–21 mA / −10.4–10.4 V)

• Settling Time: < 2 ms to 95 % of final value with resistive load

• Current Draw @ 5.1 V: 150 mA

• Total Backplane Power: 5.8 W

• Power Dissipation: 3.15–5.8 W depending on load (0–750 Ω)

• Thermal Dissipation: 16.78 BTU/hr

• Open-Circuit Detection: Enabled for current outputs > 0.1 mA

• Overvoltage Protection: 24 V DC

• Short-Circuit Protection: Electronically limited to ≤ 21 mA

• Weight: 0.4 kg

Features

• Dual output modes: current or voltage, configurable per channel

• Exceptional accuracy and fast signal response

• Electronic over-current and short-circuit protection

• Compact design for single-slot ControlLogix chassis mounting

• Built-in diagnostics for circuit fault detection

• High signal integrity for precision analog control applications

Applications

• Industrial process control and instrumentation

• Motion and drive control systems

• Analog actuator or valve control

• Data acquisition and distributed control architectures

FAQ / Comparison

• Q: Does the 1756-OF8 support both current and voltage output simultaneously?
  A: Yes, each channel can be individually configured for either voltage or current mode.

• Q: What is the difference between 1756-OF6CI and 1756-OF8?
  A: The 1756-OF8 provides two additional configurable channels and faster settling performance.