Allen-Bradley 1756-OF4 ControlLogix Analog Output Module

Products Description

Allen-Bradley 1756-OF4 ControlLogix Analog Output Module, Current/Voltage, 4 Points (20 Pin). Number of Outputs: 4 voltage or current; Resolution: 15 bits; Removable Terminal Block Housing: 1756-TBNH or 1756-TBSH. The 1756-OF4 module supports On-board data alarming, Scaling to engineering units, Real-time channel sampling, IEEE 32-bit floating point or 16-bit integer data formats.

Key Parameters

Core Features & Advantages

• Configurable Voltage and Current Outputs: The module's standout feature is its per-channel configurability for either voltage (±10.4V) or current (0-21 mA), offering flexibility to support various field devices .

• High-Resolution Signal Control: With 15-bit resolution across its output ranges (320 µV/bit for voltage, 650 nA/bit for current), the module provides precise analog control for demanding applications .

• Onboard Diagnostics and Status Indication: The module provides status indicators such as Module Health and In Calibration Mode, enabling rapid troubleshooting and maintenance .

• Seamless ControlLogix Integration: As a native 1756-series module, it installs directly into the ControlLogix chassis. It supports multiple data formats, including floating-point and integer modes, for flexible integration .

Typical Applications

The 1756-OF4 is widely used for precise analog output control in various industries, including:

• Process Control: Driving current-to-pressure (I/P) transducers for valve positioners, flow control, and pressure regulation .

• Machine Control: Controlling variable frequency drives (VFDs) for speed and torque control in conveyors, mixers, and material handling equipment.

• Data Retransmission: Providing signals for recorders, indicators, and data loggers .

Important Notes

• Isolation: There is no electrical isolation between channels; the module is single-ended .

• Lifecycle Status: This product is listed as Active by Rockwell Automation, with an estimated lead time of approximately 5 days 

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