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1794-IJ2 | Allen-Bradley FLEX I/O Frequency Input Module 2-Channel 1–32 kHz
- Regular price
- $735.00
- Sale price
- $735.00
- Regular price
-
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Product Description P/N: 1794-IJ2
Description
The Allen-Bradley 1794-IJ2 is a FLEX I/O frequency input module designed for high-speed measurement applications in distributed automation systems. It provides two high-resolution frequency input channels with gate inputs and supports sine or square wave signals up to 32 kHz using a 24 V DC supply.
Technical Specifications
| Condition | New / Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLCs / Machine Control |
| Part Number | 1794-IJ2 |
| Subcategory | PLC Module / Rack |
| Manufacturer | Rockwell Automation |
| Product Type | FLEX I/O Frequency Input Module |
| Number of Channels | 2 |
| Inputs per Channel | Frequency + Gate |
| Input Frequency Range | 1–32 kHz (sine or square wave) |
| Input Pulse Width | 20 µs |
| Raw Frequency Value | Up to 32,767 (range dependent) |
| External DC Supply | 19.0–31.2 V DC |
| FlexBus Current | 30 mA @ 5 V DC |
| Power Dissipation | Max. 4.6 W @ 31.2 V DC |
| Thermal Dissipation | Max. 15.6 BTU/hr |
| Outputs | 2 isolated 24 V DC |
| Max Output Current | 1.0 A per channel |
| Output Voltage (Nom.) | 24 V DC |
| Terminal Base | 1794-TB3G or 1794-TB3GS |
| Mounting | DIN Rail |
| Operating Temperature | 0 to 55°C |
Information About 1794-IJ2
The 1794-IJ2 is part of the Allen-Bradley FLEX I/O platform and is designed for high-speed frequency measurement tasks in distributed I/O architectures. Each channel includes a dedicated frequency input and gate input, allowing precise timing and event-based measurements. The module supports signal processing for applications such as speed, acceleration, and rate monitoring. It integrates with FLEX I/O adapters for networked communication and is commonly installed in machine control and process automation systems where accurate frequency data is required.
Key Features
- Dual High-Speed Frequency Channels: Supports two independent frequency inputs with gate control for precise measurement.
- Wide Frequency Support: Handles sine and square wave inputs from 1 to 32 kHz with a minimum pulse width of 20 µs.
- Isolated DC Outputs: Provides two configurable 24 V DC isolated outputs for alarms or control signaling.
- Flexible Output Assignment: Outputs can be mapped to frequency, percent of full scale, or acceleration alarm functions.
- FLEX I/O System Compatibility: Designed for use with 1794 FLEX I/O terminal bases and network adapters.
- Compact DIN Rail Mounting: Enables easy installation in space-constrained control cabinets.
- Industrial Reliability: Engineered for continuous operation in demanding automation environments.
The 1794-IJ2 delivers the reliability and precision required for high-speed frequency measurement and control in Allen-Bradley FLEX I/O automation systems.
Description
The Allen-Bradley 1794-IJ2 is a FLEX I/O frequency input module designed for high-speed measurement applications in distributed automation systems. It provides two high-resolution frequency input channels with gate inputs and supports sine or square wave signals up to 32 kHz using a 24 V DC supply.
Technical Specifications
| Condition | New / Never Used Surplus |
| Brand | Allen-Bradley |
| Category | PLCs / Machine Control |
| Part Number | 1794-IJ2 |
| Subcategory | PLC Module / Rack |
| Manufacturer | Rockwell Automation |
| Product Type | FLEX I/O Frequency Input Module |
| Number of Channels | 2 |
| Inputs per Channel | Frequency + Gate |
| Input Frequency Range | 1–32 kHz (sine or square wave) |
| Input Pulse Width | 20 µs |
| Raw Frequency Value | Up to 32,767 (range dependent) |
| External DC Supply | 19.0–31.2 V DC |
| FlexBus Current | 30 mA @ 5 V DC |
| Power Dissipation | Max. 4.6 W @ 31.2 V DC |
| Thermal Dissipation | Max. 15.6 BTU/hr |
| Outputs | 2 isolated 24 V DC |
| Max Output Current | 1.0 A per channel |
| Output Voltage (Nom.) | 24 V DC |
| Terminal Base | 1794-TB3G or 1794-TB3GS |
| Mounting | DIN Rail |
| Operating Temperature | 0 to 55°C |
Information About 1794-IJ2
The 1794-IJ2 is part of the Allen-Bradley FLEX I/O platform and is designed for high-speed frequency measurement tasks in distributed I/O architectures. Each channel includes a dedicated frequency input and gate input, allowing precise timing and event-based measurements. The module supports signal processing for applications such as speed, acceleration, and rate monitoring. It integrates with FLEX I/O adapters for networked communication and is commonly installed in machine control and process automation systems where accurate frequency data is required.
Key Features
- Dual High-Speed Frequency Channels: Supports two independent frequency inputs with gate control for precise measurement.
- Wide Frequency Support: Handles sine and square wave inputs from 1 to 32 kHz with a minimum pulse width of 20 µs.
- Isolated DC Outputs: Provides two configurable 24 V DC isolated outputs for alarms or control signaling.
- Flexible Output Assignment: Outputs can be mapped to frequency, percent of full scale, or acceleration alarm functions.
- FLEX I/O System Compatibility: Designed for use with 1794 FLEX I/O terminal bases and network adapters.
- Compact DIN Rail Mounting: Enables easy installation in space-constrained control cabinets.
- Industrial Reliability: Engineered for continuous operation in demanding automation environments.
The 1794-IJ2 delivers the reliability and precision required for high-speed frequency measurement and control in Allen-Bradley FLEX I/O automation systems.