The Allen-Bradley 1794-IF4IXT is a high-performance analog input module from the Flex I/O XT family. Specifically, it offers four isolated analog input channels. This module is the extended-temperature version of the standard 1794-IF4I. Therefore, it is designed to operate reliably in harsh and wide-temperature environments. The 1794-IF4IXT provides channel-to-channel isolation. As a result, it effectively eliminates ground loop issues and rejects common-mode noise. This makes it ideal for applications with long sensor cables or significant ground potential differences.
The 1794-IF4IXT features four isolated, individually configurable analog inputs. For instance, each channel can be configured for either voltage or current operation. It supports a wide range of input signals, including ±10V and 0-20 mA. This flexibility allows it to interface with various sensors and field devices, such as 2-wire, 3-wire, and 4-wire transmitters.
Resolution is a critical feature of this module. Specifically, it offers 16-bit resolution for unipolar configurations. Furthermore, it provides 15-bit resolution for configurations handling both positive and negative signal ranges. The module utilizes the Sigma-Delta conversion method. Consequently, this ensures high accuracy and excellent noise rejection for stable readings.
The 1794-IF4IXT requires an external DC supply. The nominal voltage is 24V DC, with a range of 19.2 to 31.2V DC (including AC ripple). At the maximum rated voltage of 31.2V DC, the module dissipates 2 Watts of power. Meanwhile, its thermal dissipation is 6.8 BTU/hr. This low power consumption makes it energy-efficient for large I/O systems.
A standout feature of the 1794-IF4IXT is its extended temperature capability. In fact, the "XT" designation stands for "eXtended Temperature." The module's printed circuit board (PCB) and all components feature a conformal coating. Moreover, they have stable low-temperature coefficients. Therefore, the 1794-IF4IXT operates across a wide ambient temperature range of -20 °C to +70 °C (-4 °F to +158 °F). This makes it suitable for outdoor applications, cold storage facilities, and high-temperature industrial processes.
The 1794-IF4IXT excels in applications with signal interference. Specifically, it provides channel-to-channel isolation. Additionally, it offers isolation between the field side and the system side. This isolation effectively blocks ground potential differences that can occur in control loops. Furthermore, it rejects unwanted interference signals picked up by long sensor cables (over 10 meters). As a result, the module ensures accurate and reliable analog signal processing even in electrically noisy environments.
The 1794-IF4IXT is built to withstand harsh conditions. First, its operating temperature range is -20 °C to +70 °C. Second, the non-operating temperature range is -40 °C to 85 °C. It is tested for operating vibration and shock to ensure durability in rugged industrial settings.
The module's housing measures 46 mm x 94 mm x 53 mm. It has an open-style enclosure. The module is lightweight and compact, saving valuable panel space.
The 1794-IF4IXT requires a compatible terminal base for installation. Specifically, it works with a wide range of terminal base units. These include:
1794-TBN
1794-TB2
1794-TB3 series (including 1794-TB3S, 1794-TB3T, 1794-TB3TS)
1794-TBNK
1794-TB3K series (including 1794-TB3SK, 1794-TB3TK, 1794-TB3TSK)
Select the appropriate base based on your wiring and installation needs. The terminal base determines the wire size and connection method.
Installing the 1794-IF4IXT is a straightforward process. First, mount the compatible terminal base onto a DIN rail. Next, snap the 1794-IF4IXT module firmly onto the terminal base. Ensure it clicks securely into place.
Connect your analog field devices to the terminal base according to the wiring diagram. Pay attention to the connection type for each channel (voltage or current). Connect the external DC power supply to the designated terminals. Finally, connect the communication adapter to complete the Flex I/O assembly.
Always power down the system before installation. Moreover, verify all connections are secure before applying power. After power-up, check the status indicators to confirm normal operation.
The 1794-IF4IXT offers user-configurable settings. For example, each channel can be independently configured for:
Input type: Voltage or Current
Input range: ±10V or 0-20 mA
Data format selection (including unipolar and dual-polarity signal formats)
Digital filtering options
Configuration is performed through the communication adapter. No physical switches or jumpers are required. This software-based approach simplifies setup and allows for easy adjustments.
Your shipment for the Allen-Bradley 1794-IF4IXT includes:
(1) Allen-Bradley 1794-IF4IXT Flex XT Analog Input Module
(1) Installation Instructions manual
The module is packaged in an anti-static bag for safe transport.
All orders are shipped via premium courier services. Your 1794-IF4IXT will be dispatched using FedEx, UPS, or DHL. Moreover, you will receive tracking information once your order ships.
1. What is the difference between the 1794-IF4I and the 1794-IF4IXT?
The 1794-IF4IXT is the extended-temperature version. Specifically, it features conformal coating and stable low-temperature components. Therefore, it operates from -20 °C to +70 °C, while the standard version has a narrower range.
2. Can the 1794-IF4IXT accept both voltage and current signals?
Yes, absolutely. Each of the four channels on the 1794-IF4IXT is individually configurable. For instance, you can set some channels for ±10V and others for 0-20 mA. This provides excellent application flexibility.
3. Why does the 1794-IF4IXT provide channel-to-channel isolation?
Isolation is crucial for rejecting ground potential differences and noise. With the 1794-IF4IXT, you can run long sensor cables (over 10 meters) without signal corruption. Consequently, this ensures accurate and stable analog readings.
4. Which terminal bases are compatible with the 1794-IF4IXT?
The 1794-IF4IXT is compatible with many terminal bases. These include the 1794-TBN, 1794-TB2, 1794-TB3 series, and various "K" versions (such as 1794-TBNK and 1794-TB3TK). Choose the base that best fits your wiring preferences.
5. What is the resolution of the 1794-IF4IXT analog inputs?
The 1794-IF4IXT provides 16-bit resolution for unipolar signals. For configurations handling both positive and negative signal ranges, it provides 15-bit resolution. Thus, it delivers high precision for demanding process control applications.
| Brand Name | |
| Model No. | 1794-IF4IXT |
| Product Type | Analog Input Module |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
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