Product Overview
The Allen-Bradley 1794-IM8 is a Flex I/O 220V AC Digital Input Module designed for industrial automation systems. It provides 8 nonisolated inputs and operates with a nominal on-state voltage of 240V AC. This module is part of the Flex I/O system, which includes a terminal base unit, an adapter, and the I/O module itself. It is suitable for applications requiring reliable AC input sensing in harsh environments.
Technical Specifications Breakdown
Key parameters for the 1794-IM8 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Product Type | Flex I/O 220V AC Digital Input Module |
| Inputs | 8 Nonisolated |
| On-state Voltage (nom.) | 240V AC |
| On-state Current (max.) | 13.21 mA |
| Off-state Voltage (max.) | 40V AC |
| Off-state Current (max.) | 2.6 mA |
| Nominal Input Impedance | 22.3 kΩ |
| Nominal Input Current | 12 mA @ 240V AC |
| Isolation Voltage | 250V Continuous |
| Flexbus Current | 30 mA @ 5V DC |
| Thermal Dissipation | 16.2 BTU/hr. @ 264V AC max. |
Industry Applications
This module is well-suited for monitoring AC-powered equipment in manufacturing lines, such as motor starters and conveyor systems. The 8 nonisolated inputs allow for cost-effective monitoring in applications where isolation between channels is not required.
Installation & Setup Guidance
Mount the module using either screw or DIN rail methods. Ensure the terminal base unit (e.g., 1794-TBN) is properly installed and wired according to the provided labels. The flexbus must be fully inserted for the module to operate. Install appropriate fuses to protect against overcurrent. The maximum startup voltage is 10A, so verify power supply ratings.
Maintenance & Reliability
Inspect the module periodically for signs of wear or contamination. The module is approved for hazardous locations and operates reliably in temperatures from 0 to 55 degrees Celsius. Keep the enclosure clean and ensure proper ventilation to maintain thermal dissipation within limits.
Compatibility & Integration
The 1794-IM8 integrates with the Flex I/O system via the flexbus interface. It is compatible with various Allen-Bradley adapters and controllers that support Flex I/O architecture. The module uses 8 key switch positions and 2 signal ports for wiring.
Selection Guide & Purchasing Advice
When selecting the 1794-IM8, confirm that your system requires 220V AC digital input sensing with 8 nonisolated channels. AutoDCSTech offers this module with detailed specifications and support. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 1794-IM8 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
