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- 1794-IE8XOE4
- ControlNet Flex I/O Adapter Module
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- 94 × 94 × 53 mm
- 0.11kg
- Xiamen, China
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1794-IE8XOE4 FLEX I/O Analog Combination Module – Detailed Technical Overview
1. Product Introduction
The 1794-IE8XOE4 is a FLEX I/O distributed analog combination module designed for industrial automation systems requiring both analog signal acquisition and analog signal output in a single compact unit.
It provides 8 single-ended analog input channels and 4 analog output channels, enabling integrated monitoring and control of process variables such as flow, pressure, temperature, and actuator positioning.
The module is part of the FLEX I/O 1794 platform, which supports distributed I/O architecture for reducing wiring complexity and allowing remote installation close to field devices.
This model is commonly used in process control systems where both measurement and control signals are required in the same I/O node.
2. Product Features
- 8-channel analog inputs + 4-channel analog outputs
- Supports current and voltage signal types (0–10V / 4–20mA / 0–20mA)
- Single-ended, non-isolated channel design
- 16-bit analog resolution (high precision measurement)
- FLEX I/O modular distributed architecture
- DIN rail mounting system
- LED status indicator for power and diagnostics
- Block transfer communication (PLC integration)
- Compact combined I/O structure
- Stable industrial-grade performance
3. Technical Parameters
| Parameter | Specification |
|---|---|
| Model | 1794-IE8XOE4 |
| Product Type | Analog input/output combination module |
| Series | FLEX I/O 1794 Series |
| Input Channels | 8 single-ended analog inputs |
| Output Channels | 4 single-ended analog outputs |
| Input Signal Range | 0–10 VDC / 0–20 mA / 4–20 mA |
| Output Signal Range | 0–10 VDC / 0–20 mA / 4–20 mA |
| Resolution | 16-bit analog conversion |
| Input Type | Non-isolated, single-ended |
| Output Type | Analog sourcing/sinking configurable |
| Conversion Method | Successive approximation ADC |
| Output Conversion | DAC (digital-to-analog conversion) |
| Input Accuracy | ±0.1% full scale (typical) |
| Output Accuracy | ±0.15–0.2% full scale |
| Update Time | ~8 ms typical scan cycle |
| Step Response | ~10–20 ms depending on load |
| Power Supply | 24V DC (10–31.2V DC range) |
| FlexBus Current | ~80 mA |
| External Power Current | ~140 mA @ 24V DC |
| Power Dissipation | ~3.4 W max |
| Heat Dissipation | ~11.6 BTU/hr |
| Isolation Voltage | 50V continuous (field-to-system) |
| Channel Isolation | None (shared reference design) |
| Communication Method | Block Transfer (BTR/BTW) |
| Indicator Lights | 1 power/status LED |
| Mounting Type | DIN rail |
| Terminal Base | 1794-TB2 / TB3 compatible |
| Operating Temperature | -20°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5%–95% non-condensing |
| Vibration Resistance | 5g (10–500 Hz) |
| Shock Resistance | 30g |
| IP Rating | IP20 |
| Dimensions | 94 × 94 × 53 mm |
| Weight | 0.11 kg |
4. Product Function Description
The 1794-IE8XOE4 functions as a dual-purpose analog interface module.
On the input side, it collects analog signals from field instruments such as sensors and transmitters, converting them into digital values for PLC processing.
On the output side, it generates analog control signals used to regulate field devices such as control valves, actuators, and variable speed drives.
This integrated design allows a single module to handle both monitoring and control tasks, reducing the need for separate input and output modules.
It communicates with the PLC system using block transfer instructions, ensuring structured and reliable data exchange in distributed I/O systems.
5. Product Applications
The 1794-IE8XOE4 is used in systems requiring combined analog monitoring and control functionality.
Typical Applications
- Process automation systems
- Chemical production lines
- Water treatment plants
- HVAC control systems
- Oil and gas processing systems
- Pump and valve control systems
- Industrial batching systems
- Machine automation systems
- Energy management systems
- Remote I/O control stations
Typical Field Devices
- Pressure transmitters
- Flow sensors
- Level sensors
- Temperature transmitters
- Control valves
- Variable frequency drives (VFDs)
- Industrial analog actuators
6. Product Advantages
6.1 Combined Input and Output Design
Reduces system complexity by integrating 8 AI and 4 AO channels in one module.
6.2 Space Saving Architecture
Minimizes cabinet space and reduces overall wiring requirements.
6.3 Flexible Signal Compatibility
Supports both voltage and current analog standards.
6.4 Stable Industrial Operation
Designed for electrical noise resistance in harsh environments.
6.5 Fast Response Performance
Provides fast update cycles suitable for process control loops.
6.6 Modular FLEX I/O Integration
Easily expands within distributed automation architectures.
6.7 Reduced Installation Cost
Fewer modules and wiring points reduce engineering and installation effort.
7. Brand Overview
This product belongs to a globally recognized industrial automation provider specializing in:
- PLC systems and controllers
- Distributed I/O platforms
- Process automation solutions
- Industrial communication networks
- Motion and safety systems
Its technologies are widely used in manufacturing, energy, oil & gas, water treatment, and heavy process industries due to high reliability and long lifecycle support.
8. Product Series Information
Series Name
FLEX I/O 1794 Series
Series Type
Distributed analog combination I/O system
Key Characteristics
- Modular distributed architecture
- Mixed analog input/output support
- DIN rail mounting system
- Hot-swappable module capability
- Flexible wiring and configuration
- Industrial-grade robustness
The 1794-IE8XOE4 is a high-density mixed analog module within this series.
9. Recommended Related Models (Same Series or Similar)
| Model | Product Type | Function | Dimensions | Weight (kg) | Key Parameters |
|---|---|---|---|---|---|
| 1794-IE8XOE4 | Analog combo module | 8AI + 4AO | 94 × 94 × 53 mm | 0.11 kg | Mixed analog I/O |
| 1794-IE8 | Analog input module | 8-channel AI | 94 × 94 × 69 mm | 0.11 kg | Standard input |
| 1794-OE4 | Analog output module | 4-channel AO | 94 × 94 × 69 mm | 0.10 kg | Output control |
| 1794-IE12 | Analog input module | 12-channel AI | 94 × 94 × 69 mm | 0.12 kg | High-density input |
| 1794-IF4I | Isolated AI module | 4-channel AI | 94 × 94 × 69 mm | 0.11 kg | High isolation accuracy |
10. Recommended Popular Models from Same Brand
| Model | Product Type | Function | Dimensions | Weight (kg) | Key Parameters |
|---|---|---|---|---|---|
| 1756-L81E | PLC controller | ControlLogix CPU | 145 × 175 × 52 mm | 0.92 kg | High-performance control |
| 1769-L33ER | Compact PLC | CompactLogix system | 118 × 87 × 87 mm | 0.60 kg | Integrated Ethernet |
| 1734-AENTR | Ethernet adapter | POINT I/O network | 75 × 75 × 55 mm | 0.18 kg | Distributed I/O |
| 2711P-T10C4D8 | HMI panel | Operator interface | 271 × 212 × 60 mm | 1.80 kg | Industrial touchscreen |
| 20-COMM-E | Drive communication module | Ethernet interface | 140 × 95 × 30 mm | 0.22 kg | Industrial networking |
11. Installation Notes
- Install on compatible FLEX I/O terminal base
- Ensure correct analog signal wiring for inputs and outputs
- Maintain proper grounding to reduce noise interference
- Keep signal cables separated from power cables
- Verify stable 24V DC supply
- Ensure secure DIN rail installation
12. Maintenance Recommendations
- Periodically verify analog signal accuracy
- Inspect wiring integrity and terminal tightness
- Monitor output stability under load conditions
- Keep enclosure clean and dry
- Replace module if signal drift or instability occurs
13. Summary
The 1794-IE8XOE4 is a compact analog combination module designed for distributed automation systems requiring both analog input and output functionality. Its integrated design, flexible signal support, and stable industrial performance make it suitable for process control applications where efficiency, space saving, and system simplicity are essential.