Overview
The Allen-Bradley 1794-IE4XOE2 /B is a Flex I/O analog combination module designed for distributed control architectures. This Series B module integrates four configurable analog input channels and two analog output channels into a single compact form factor, enabling cost-effective analog signal processing in motion control and process automation applications.
Key Features
- 4 Single-Ended Analog Inputs: Configurable for 0–20 mA, 4–20 mA, 0–10 VDC, or ±10 VDC signals
- 2 Single-Ended Analog Outputs: Support 0–20 mA, 4–20 mA, 0–10 VDC, or ±10 VDC output ranges
- 12-Bit Resolution: Unipolar (12 bits) or bipolar (11 bits plus sign) data format
- Fast Conversion Rate: 256 µs per channel with low step response times
- DIN Rail & Panel Mounting: Flexible installation options with optional 1794-NM1 kit
- IP20 Open-Style Enclosure: Standard industrial protective rating
Technical Specifications
- Input Channels: 4 single-ended, non-isolated
- Output Channels: 2 single-ended, non-isolated
- Input Voltage Ranges: 0–10 VDC, ±10 VDC, 0–20 mA, 4–20 mA (user configurable)
- Output Voltage Ranges: 0–10 VDC, ±10 VDC, 0–20 mA, 4–20 mA (user configurable)
- Resolution: 12 bits (unipolar); 11 bits plus sign (bipolar)
- Data Format: Left-justified 16-bit 2’s complement
- Conversion Type: Successive approximation (input); pulse width modulation (output)
- Conversion Rate: 256 µs all channels
- Accuracy: ±0.20% Full Scale @ 25°C
- Input Impedance: 100 kΩ (voltage); 238 Ω (current)
- Output Current Load: 3 mA maximum (voltage output)
- Power Supply: 24 VDC (19.2–31.2 VDC operating range)
- Power Consumption: 70 mA @ 24 VDC; 4 W max @ 31.2 VDC
- Operating Temperature: 0–55°C (32–131°F)
- Dimensions: 1.8 × 3.7 × 2.1 inches
- Mounting: DIN rail or panel (with 1794-NM1 kit)
- Terminal Connection Type: Screw terminals
- Compatible Terminal Bases: 1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T, 1794-TB3TS
- Certifications: UL, CUL, CE, CSA, C-TICK, GOST, KC, MARINE
Typical Applications
- Distributed analog signal acquisition in networked I/O systems
- Process variable monitoring and control (temperature, pressure, flow)
- Motion control feedback signal conditioning
- Multi-point sensor input integration for ControlLogix platforms
- Industrial machinery analog channel expansion
- HVAC and environmental control systems
Compatibility & Replacements
The 1794-IE4XOE2 /B is a Series B revision of the Flex I/O analog combination module family and is compatible with Flex I/O adapters (1794-AENT, 1794-AENTR) and controllers using block transfer communication (BTW/BTR). It connects to supported terminal base units including 1794-TB2, 1794-TB3, and variants. This module integrates seamlessly into existing Flex I/O distributed architectures and is a direct replacement for earlier Series A versions where upgraded performance is required. No field calibration is required for Series B units.
