ABB 086444-005 – Measurement Process Board for Signal Conditioning

The ABB 086444-005 conditions raw sensor signals for accurate process measurement. This board measures 220 mm in length and 160 mm in width. It has a height of 25 mm, so it fits standard card cages easily. The unit weighs 0.38 kg, making handling during replacement simple.

Internal Architecture and Component Layout

This measurement board contains three separate circuit layers within its multilayer PCB. One layer handles analog signal conditioning, while another manages digital processing. The third layer provides power distribution and ground shielding. The ABB 086444-005 includes eight signal conditioning channels on its main area. Each channel uses a precision instrumentation amplifier for low noise.

Input Specifications and Signal Interfaces

You can connect thermocouple, RTD, or voltage signals to any channel. The ABB 086444-005 accepts millivolt signals from 0 to 100 mV directly. It also accepts voltage signals from 0 to 10V DC with proper scaling. The board provides sixteen screw terminals along its front edge. These terminals accept wire gauges from 26 AWG to 18 AWG comfortably. Each channel includes 250V AC isolation from adjacent channels.

Energy Storage and Power Requirements

The board stores 680 µF of capacitance across its primary power rails. This storage filters noise from the 24V DC supply effectively. The ABB 086444-005 draws 180 mA at 24V DC during normal operation. Therefore, total power consumption reaches 4.32 watts for the entire board. It contains no battery, so maintenance stays minimal over its lifetime.

Measurement Accuracy and Environmental Tolerance

The ABB 086444-005 achieves a measurement accuracy of ±0.05 percent of reading. It provides a temperature drift of only 50 ppm per degree Celsius. A 50-pin edge connector carries conditioned signals to the main processor. The board operates reliably from -20°C to 65°C ambient temperature. It tolerates humidity levels up to 95 percent without any condensation issues.

Below is a complete summary of its technical specifications.

The ABB 086444-005 serves as a direct replacement for failed measurement boards. You do not need any calibration adjustments after installing this board. This unit also supports hot-swapping in compatible backplane systems. Consequently, it restores process measurement accuracy without lengthy downtime.