The 1794-IF8IH FLEX I/O module provides reliable HART analog input capabilities. It features eight isolated, single-ended inputs for robust signal acquisition. This module uses Sigma-Delta conversion for high-resolution data. It handles both unipolar and bipolar signals with precision. The unipolar resolution reaches 16 bits for accurate readings. The bipolar resolution provides 15 bits plus a sign bit. This module operates on an external DC voltage from 19.2 to 31.2 Volts. It includes a 5% AC ripple tolerance for stable power. The module fits into a compact enclosure measuring 3.7 x 3.7 x 2.6 inches. It draws 80 mA from the Flexbus at 5 Volts DC. The maximum power dissipation is 4.8 Watts at 31.2 Volts DC. This module also dissipates up to 16.4 BTU per hour. The 1794-IF8IH operates safely between 32 and 131 degrees Fahrenheit. It holds North American Hazardous Location Approval for safe operation.
Product Procurement & Buyer Guide for the 1794-IF8IH
Procurement managers need a module that integrates seamlessly into existing systems. The 1794-IF8IH directly solves this need with its specific design. It is fully compatible with the Allen-Bradley Flex I/O 1794-TB3 and 1794-TB3S terminal bases. This compatibility ensures a straightforward drop-in replacement or system expansion. The module comes factory calibrated for immediate deployment in critical applications. It also supports field calibration for specialized or changing process requirements. This flexibility reduces downtime and eliminates the need for external calibration services. The module’s isolated inputs protect against ground loops and electrical noise. This isolation ensures signal integrity in demanding industrial environments.
Application engineers require precise data for control and monitoring tasks. The 1794-IF8IH delivers this with its high-resolution Sigma-Delta conversion. The 16-bit unipolar resolution captures fine signal variations for accurate control. The 15-bit plus sign bipolar resolution handles both positive and negative signal ranges. This module uses single-ended inputs to simplify wiring and reduce costs. It requires shielded wiring for signal ports in category 2. The power ports need wiring in category 3 for safe operation. The specific wire gauge depends on the chosen terminal base. Always follow these wiring guidelines to maintain signal quality and safety. The module’s open enclosure allows for easy integration into larger cabinets. This design facilitates proper airflow and heat dissipation within the control panel.
Step-by-Step Installation Guide for the 1794-IF8IH
Begin by mounting the 1794-IF8IH onto a compatible 1794-TB3 or 1794-TB3S terminal base. Ensure the module locks securely into place on the base. Connect the external DC power supply within the 19.2 to 31.2 Volt range. Verify the supply has less than 5% AC ripple for stable operation. Use a multimeter to confirm the voltage at the power terminals. For signal wiring, use shielded cables to prevent electromagnetic interference. Connect the shielded cables to the signal ports following wiring category 2. Connect the power wiring to the designated ports following wiring category 3. Double-check all connections against the module’s wiring diagram. Apply power to the module and verify the Flexbus current is 80 mA. The module will begin processing analog inputs upon successful startup. Perform a field calibration if the application demands specific accuracy levels. The module supports this procedure for fine-tuning its performance.
Logistics & Standard Packaging Details
- One Allen-Bradley 1794-IF8IH FLEX I/O HART Analog Module
- Product documentation and installation guide
- Anti-static packaging for safe transportation
We ship all orders using express delivery services. Our partners include FedEx, UPS, and DHL for reliable and fast shipping. This ensures you receive your module quickly for your project needs.
