Allen-Bradley 1756-OF8IHK – Advanced HART Analog Output Module
Key Advantages
- 8 isolated HART channels with individual modems
- High precision 15-bit resolution
- Works with 4-20mA & 0-20mA signals
- Built-in protection (±24V DC overvoltage)
- Conformal coating for harsh environments
Technical Specifications
- Output Type: Isolated HART analog
- Channels: 8 differential (36-pin)
- Current Range: 0-20mA / 4-20mA selectable
- Resolution: 15-bit (24mA range)
- Scan Time: 1 second (HART enabled)
- Isolation: 250V AC continuous
- Protection: ±24V DC overvoltage
- Certifications: C-UL-us, CE, RCM, Ex, KC, EAC
- Terminal Blocks: 1756-TBNH or 1756-TBSH
Setup & Installation
- Fits any 1756 ControlLogix chassis
- Works in local or remote configurations
- Requires terminal block (sold separately)
Download Complete Documentation
Get full specs for the 1756-OF8IHK: Download Manual
Expert Answers
- What’s the benefit of per-channel HART modems?
Enables simultaneous communication with multiple smart devices. - Can I use this in explosive environments?
Yes, it has Ex certification for hazardous areas. - How does conformal coating help?
Protects against moisture, dust and chemicals. - What’s the accuracy rating?
±0.1% of full scale at 25°C. - Is special software needed?
Works with standard ControlLogix programming tools.
Package Contents
- 1x 1756-OF8IHK module
- Installation documentation
Shipping & Support
- 12-month quality guarantee
- Express shipping via FedEx, UPS or DHL










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