Allen-Bradley ControlLogix 1756-OF8H Analog Output Module with HART

The 1756-OF8H is an analog output module designed for Allen-Bradley’s ControlLogix platform. It offers eight configurable voltage or current output channels. Each channel supports 0-20 mA, 4-20 mA, or ±10 VDC signals. The module also includes one integrated HART modem for advanced communication.

This module delivers high-resolution output with 15 to 16 bits accuracy. It features excellent signal precision and supports differential outputs. You can use it in applications that require reliable analog control and HART device communication.

Key Features

• Eight independent output channels
• Supports current outputs: 0-20 mA and 4-20 mA
• Voltage outputs: ±10 VDC
• Built-in HART modem for device communication
• High resolution: 15-16 bits
• Overvoltage protection up to ±24 VDC
• Removable terminal blocks for easy wiring
• Open enclosure design

Technical Specifications

• Manufacturer: Rockwell Automation
• Brand: Allen-Bradley
• Series: ControlLogix
• Module Type: Analog Output with HART capability
• Output Channels: 8 differential outputs
• Output Signals: Current (0-20 mA, 4-20 mA), Voltage (±10 VDC)
• Resolution: 15-16 bits
• Accuracy: Voltage ±0.1% of range, Current ±0.5% of range
• Isolation Voltage: 50 V continuous
• Overvoltage Protection: ±24 VDC max
• Input Current Range: 0-20 or 4-20 mA
• Terminal Blocks: 1756-TBNH, 1756-TBSH, 1756-TBCH
• Current Draw: 230 mA @ 5.1 VDC and 230 mA @ 24 VDC
• Data Format: Integer mode (left justified, 2’s complement), IEEE 32-bit floating point
• Conversion Method: Successive approximation (input), R-Ladder DAC (output)
• Open Circuit Detection: For current output only (set output < 0.1 mA)
• Enclosure: Open