Honeywell 51304485-100 Input Module Board

The 51304485-100 input module board provides reliable signal acquisition for Honeywell TDC 3000 control systems. This board connects field devices to the process controller through a compact, single-slot design. Engineers rely on its stable performance in continuous process environments.

Physical Dimensions and Board Weight

The 51304485-100 measures 12.5 inches in length and 7.5 inches in width. Board thickness reaches 1.2 inches, while the module weighs approximately 2.1 pounds. These dimensions fit standard I/O card file slots without modification. Consequently, technicians install replacement boards quickly during maintenance windows.

Input Channels and Component Count

This board carries 16 analog input channels for process signal acquisition. The 51304485-100 contains 42 discrete components on the circuit assembly. Each channel supports 4–20 mA current loop signals from field transmitters. Furthermore, the board includes 16 input filter capacitors for noise suppression.

Interface and Connectivity Parameters

Two 50-pin edge connectors link the board to the backplane and field wiring. The 51304485-100 provides 250 VDC isolation between field circuits and logic ground. Signal conversion achieves 12-bit resolution across the full input range. Therefore, the module maintains accuracy despite electrical interference in plant environments.

Power Requirements and Energy Storage

The board draws 0.75 A from the +5 VDC backplane supply rail. An onboard lithium cell maintains calibration data during power interruptions. This energy storage element retains parameter settings for up to 90 days. Meanwhile, total power consumption stays below 4 watts during normal operation.

Key Technical Specifications Summary

Parameter	Specification
Input channels	16 analog (4–20 mA)
Component count	42 discrete parts
Board dimensions	12.5 × 7.5 × 1.2 in
Weight	2.1 lbs
Connectors	2 × 50-pin edge
Isolation rating	250 VDC
Power draw	0.75 A @ +5 VDC
Backup retention	90 days

Installation and Application Notes

The 51304485-100 fits directly into TDC 3000 card file slots with no adapter needed. Configuration occurs through the universal station or engineering workstation software. Technicians verify channel calibration before commissioning each board. As a result, process accuracy improves and startup time shortens considerably.