1756-OF8K Allen-Bradley ControlLogix Analog Output Module

Product Overview

The Allen-Bradley 1756-OF8K is an analog output module for ControlLogix systems. It features 8 channels with both voltage and current outputs. 

General Information

• Brand: Allen-Bradley (Rockwell Automation)
• Model: 1756-OF8K
• Series: ControlLogix
• Module Type: Analog Output
• Number of Channels: 8
• Coating: Conformal Coat for harsh environments

Output Specifications

• Output Voltage Range: -10V to +10V
• Output Current Range: 4-20 mA
• Resolution: 15 bits (650 nA/bit at 21 mA; 320 μV/bit at 10.4V)
• Settling Time: < 2 ms to 95% final value
• Drive Capability: Voltage > 2000Ω, Current 0-750Ω

Power Requirements

• Backplane Voltage: 5.1V DC, 150 mA max
• Current Draw: 150 mA at 5.1V, 210 mA at 24V
• Total Backplane Power: 5.8 W
• Power Dissipation: 5.8 W to 3.15 W
• Thermal Dissipation: 16.78 BTU/hr

FAQ

Q: What output types does this module support?

A: Both voltage (-10V to +10V) and current (4-20 mA) outputs. Each channel can be configured independently.

Q: What is the resolution?

A: 15-bit resolution. Current output: 650 nA/bit at 21 mA. Voltage output: 320 μV/bit at 10.4V.

Q: What is the settling time?

A: Less than 2 milliseconds to reach 95% of final output value for fast control loops.