Allen-Bradley | 1756-OF8 |ControlLogix

Product Description: Allen-Bradley 1756-OF8

The Allen-Bradley 1756-OF8 is an 8-channel analog output module for the ControlLogix system, designed to provide precise voltage or current analog output signals for industrial control applications. The module supports configurable output ranges and offers advanced diagnostics and electronic protection features, making it ideal for demanding analog signal control in process and machine automation environments.

Key Features

• 8 individually configurable analog output channels
• Supports voltage (±10V, 0–10V) and current (4–20 mA, 0–20 mA) output ranges
• 16-bit resolution for accurate analog signal generation
• Independent channel configuration and scaling
• Real-time diagnostics for open circuit, overrange, and underrange conditions
• Removable terminal block (RTB) for simplified wiring

Technical Specifications

• Number of Channels: 8 analog outputs
• Output Types: Voltage or Current
• Voltage Ranges: ±10V, 0–10V
• Current Ranges: 0–20 mA, 4–20 mA
• Resolution: 16-bit
• Accuracy: ±0.1% Full Scale at 25°C
• Conversion Rate: 2.5 ms per channel (typical)
• Isolation: 250V (channel-to-backplane and channel-to-channel)
• Backplane Current Load:
  • 5V: 250 mA
  • 24V: 90 mA
• Operating Temperature: 0°C to 60°C
• Mounting: ControlLogix chassis (occupies 1 slot)

Application Areas

• Process control systems with analog actuators
• Dosing, metering, and blending systems
• HVAC and temperature control
• Motor speed and position control
• SCADA and DCS analog interfacing

Advantages

• High accuracy and fast response for precision control
• Multiple configurable ranges for application flexibility
• Robust isolation for signal integrity and safety
• Diagnostic features enhance reliability and reduce downtime
• Ideal for both machine and process-level analog output applications