Product Summary
The Allen-Bradley 1794-IE4XOE2 is a high-density Flex I/O module. It combines four analog inputs and two analog outputs in a single unit. This design saves valuable panel space and reduces wiring complexity. Engineers use it for precise signal conditioning in distributed control architectures.
Product Procurement & Buyer Guide
Procurement managers seek modules that reduce total cost of ownership. The 1794-IE4XOE2 delivers this through its dual-function design. You replace two separate modules with one compact unit. This cuts inventory costs and simplifies system layout. The module measures just 1.8 x 3.7 x 2.1 inches. This small footprint allows dense installation on a DIN rail.
Application engineers value configurable signal ranges. The module accepts 0-20 mA and 4-20 mA current inputs. It also handles ±10 VDC and 0-10 VDC voltage signals. This flexibility lets you standardize one module across diverse field devices. The output channels mirror this versatility. They provide 0-20 mA, 4-20 mA, and ±10 VDC signals. You can drive actuators, valves, and recorders without extra signal conditioners.
The module achieves 12-bit resolution plus sign. This ensures accurate data conversion for critical processes. The ADC uses successive approximation for reliable readings. Each input channel converts in 256 μs. The step response reaches 63% in 9.4 ms for voltage channels. For current channels, it takes 18.2 ms. This speed supports real-time control loops effectively.
Output accuracy remains high under varying conditions. The DAC uses pulse width modulation conversion. It provides 0.133% full-scale accuracy at 25°C. This precision ensures consistent actuator control. The module stores data in left-justified, 16-bit 2s complement format. This simplifies integration with Rockwell controllers.
Installation Guide
Mount the 1794-IE4XOE2 on a standard DIN rail. Select a compatible terminal base unit for wiring. Use models 1794-TB2, -TB3, -TB3S, -TB3T, or -TB3TS. The terminal base provides all connection points and backplane pins. Wire size depends on the chosen base. Always follow the manufacturer's torque specifications.
Power the module with a 24 VDC supply. Acceptable range is 19.2 to 31.2 Volts DC. The module draws 70 mA at 24 VDC. This low current minimizes power supply loading. Maximum power dissipation is 4 Watts at 31.2 VDC. Thermal dissipation reaches 13.6 BTU/hour under full load. Ensure adequate airflow around the module.
The FlexBus current is 20 mA. This powers internal communication. Connect the module to the network via the backplane interface. The system supports high-speed data exchange. Configure input ranges through your programming software. Select between 0-20 mA and 4-20 mA for current. Choose ±10 VDC or 0-10 VDC for voltage.
Environmental Tolerances
The module operates in harsh industrial environments. Storage temperature ranges from -40°C to 85°C. This allows winter storage in unheated warehouses. The unit withstands 5g vibration at 10 to 500 Hz. It survives operating shocks of 30g. This ruggedness suits applications near heavy machinery.
Normal mode rejection ensures clean signals. The voltage terminal achieves -3 dB at 17 Hz. It reaches -10 dB at 50 Hz. The current terminal shows -3 dB at 9 Hz. It improves to -15.3 dB at 50 Hz. This filtering rejects common electrical noise from motors and drives.
Logistics & Standard Packaging Details
Express delivery shipping is available via FedEx, UPS, and DHL.
