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1756-OF8IH | Allen-Bradley ControlLogix Analog Isolated Output HART 8-Point
- Regular price
- $3,999.00
- Sale price
- $3,999.00
- Regular price
-
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Product Description P/N: 1756-OF8IH
Description
The Allen-Bradley 1756-OF8IH is a ControlLogix HART analog output module designed for precise current control in industrial automation systems. Manufactured by Rockwell Automation, it provides eight isolated differential current outputs with integrated HART modems on each channel. The 1756-OF8IH is used in applications requiring high-resolution analog control and digital device communication.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLCs/Machine Control |
| Part Number | 1756-OF8IH |
| Subcategory | PLC Module/Rack |
| Manufacturer | Rockwell Automation |
| Series | ControlLogix |
| Module Type | ControlLogix HART I/O Module |
| Number of Channels | 8 isolated differential outputs |
| HART Support | 1 HART modem per channel |
| Output Current Ranges | 0–20 mA, 4–20 mA |
| Resolution | 15-bit across 24 mA |
| Overvoltage Protection | ±24 VDC |
| Estimated HART Scan Time | 1 second (HART enabled) |
| Output Isolation | 250 V output-to-backplane |
| Backplane Current Draw | Approx. 400 mA @ 24 VDC |
| Operating Temperature Range | 0 to 60 °C |
| Enclosure Type | Open-style (module only) |
Information About 1756-OF8IH
The 1756-OF8IH is a member of the Allen-Bradley ControlLogix platform, engineered to combine analog output functionality with HART communication capability. Its design incorporates channel-to-channel isolation, reinforced backplane isolation, and electronic protection features to ensure reliable operation in demanding environments. The module integrates directly into any ControlLogix 1756 I/O chassis, enabling seamless communication with Logix controllers and HART-enabled field devices. It is typically deployed in process automation systems such as chemical processing, oil and gas, and power generation where accurate current output and device diagnostics are required.
Key Features:
- Eight isolated analog outputs: Supports independent current control per channel
- Integrated HART modem per channel: Enables digital communication with field instruments
- 15-bit resolution: Provides high-accuracy control across the full current range
- Selectable output ranges: Supports 0–20 mA and 4–20 mA operation
- Differential output design: Enhances noise immunity and signal integrity
- Overvoltage protection: Rated for ±24 VDC to protect against electrical faults
- Electronic current limiting: Protects outputs during short-circuit conditions
- Open-circuit detection: Improves diagnostics and system reliability
- High isolation ratings: Ensures safe operation in multi-channel environments
- ControlLogix chassis compatibility: Installs directly into standard 1756 racks
The 1756-OF8IH delivers the reliability and precision required for advanced process control and HART-enabled analog output applications.
Description
The Allen-Bradley 1756-OF8IH is a ControlLogix HART analog output module designed for precise current control in industrial automation systems. Manufactured by Rockwell Automation, it provides eight isolated differential current outputs with integrated HART modems on each channel. The 1756-OF8IH is used in applications requiring high-resolution analog control and digital device communication.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLCs/Machine Control |
| Part Number | 1756-OF8IH |
| Subcategory | PLC Module/Rack |
| Manufacturer | Rockwell Automation |
| Series | ControlLogix |
| Module Type | ControlLogix HART I/O Module |
| Number of Channels | 8 isolated differential outputs |
| HART Support | 1 HART modem per channel |
| Output Current Ranges | 0–20 mA, 4–20 mA |
| Resolution | 15-bit across 24 mA |
| Overvoltage Protection | ±24 VDC |
| Estimated HART Scan Time | 1 second (HART enabled) |
| Output Isolation | 250 V output-to-backplane |
| Backplane Current Draw | Approx. 400 mA @ 24 VDC |
| Operating Temperature Range | 0 to 60 °C |
| Enclosure Type | Open-style (module only) |
Information About 1756-OF8IH
The 1756-OF8IH is a member of the Allen-Bradley ControlLogix platform, engineered to combine analog output functionality with HART communication capability. Its design incorporates channel-to-channel isolation, reinforced backplane isolation, and electronic protection features to ensure reliable operation in demanding environments. The module integrates directly into any ControlLogix 1756 I/O chassis, enabling seamless communication with Logix controllers and HART-enabled field devices. It is typically deployed in process automation systems such as chemical processing, oil and gas, and power generation where accurate current output and device diagnostics are required.
Key Features:
- Eight isolated analog outputs: Supports independent current control per channel
- Integrated HART modem per channel: Enables digital communication with field instruments
- 15-bit resolution: Provides high-accuracy control across the full current range
- Selectable output ranges: Supports 0–20 mA and 4–20 mA operation
- Differential output design: Enhances noise immunity and signal integrity
- Overvoltage protection: Rated for ±24 VDC to protect against electrical faults
- Electronic current limiting: Protects outputs during short-circuit conditions
- Open-circuit detection: Improves diagnostics and system reliability
- High isolation ratings: Ensures safe operation in multi-channel environments
- ControlLogix chassis compatibility: Installs directly into standard 1756 racks
The 1756-OF8IH delivers the reliability and precision required for advanced process control and HART-enabled analog output applications.