ABB Bailey 1947684A32 Distributed Control System

Unit Overview

This termination unit connects field sensor wiring to INFI 90 I/O modules. You can install ABB Bailey 1947684A32 directly inside INFI 90 system cabinets. The unit provides screw terminals for all field signal connections. It also includes passive filtering components for noise reduction.

Technical Specifications

Unit Construction and Components

The unit houses a PCB with 32 screw terminal positions. Each terminal pair includes an RC filter and a transient suppression diode. Moreover, 68 discrete components include resistors, capacitors, and protection devices. Ceramic capacitors provide low-pass filtering for high-frequency noise. Consequently, field signals arrive clean at the I/O module inputs.

Installation Process

You can mount ABB Bailey 1947684A32 on standard 35 mm DIN rails. The screw terminals accept field wiring from sensors and actuators directly. Furthermore, ribbon cables connect the termination unit to I/O modules. Clearly numbered labels identify each of the 32 terminal positions.

Performance Advantages

This unit filters out electrical noise above 10 Hz from field signals. The transient suppression diodes clamp voltage spikes below safe levels. Therefore, sensitive analog inputs receive clean, protected signals. The 32-terminal density also organizes many field connections in minimal cabinet space.

Safety and Compliance

ABB Bailey 1947684A32 meets CE and RoHS industrial standards. The unit stores negligible electrical energy after field power removal. Hence, technicians face minimal electrical risk during wiring changes or maintenance.