Honeywell 51304481-100 Analog Input Module for TDC 3000 Systems

The 51304481-100 analog input module brings field signals into Honeywell TDC 3000 process controllers with high accuracy. This board converts transmitter currents into clean digital values for control logic. Plant engineers trust its repeatability across continuous production cycles.

Input Channels and Component Count

The 51304481-100 handles 16 analog input channels for simultaneous field measurement. Each channel accepts 4–20 mA current loop signals from field transmitters. The circuit assembly carries 44 discrete components, including 16 input filter networks. Additionally, 16 precision sense resistors convert current into measurable voltage levels.

Physical Dimensions and Weight

This module measures 12.5 inches in length and 7.5 inches in width. Board thickness reaches 1.2 inches, while the unit weighs approximately 2.1 pounds. These dimensions align with standard TDC 3000 card file slots. Consequently, technicians replace boards quickly during scheduled maintenance windows.

Interface, Isolation, and Resolution

Two 50-pin edge connectors manage backplane communication and field termination. The 51304481-100 delivers 250 VDC isolation between input circuits and logic ground. Analog-to-digital conversion achieves 12-bit resolution across the full input span. Therefore, the module preserves measurement accuracy in electrically noisy plant conditions.

Power Requirements and Energy Storage

The board draws 0.80 A from the +5 VDC backplane supply rail. An onboard lithium cell protects calibration constants during power interruptions. This energy storage element retains parameter data for roughly 90 days. Meanwhile, total consumption stays below 4.2 watts under normal operation.

Key Technical Specifications Summary

Installation and Application Notes

The 51304481-100 slides straight into TDC 3000 card file slots without adapters. Engineers configure channel ranges through the universal station software interface. Technicians confirm loop calibration before returning each board to service. As a result, measurement reliability improves and startup time shortens considerably.