Siemens 6ES5432-3BA12 Analog Input Module

Technical Overview

The Siemens 6ES5432-3BA12 is a high-performance analog input module for the SIMATIC S5-115U programmable controller series. This unit converts analog signals from field sensors into digital values for the CPU. It features 8 single-ended input channels, each configurable for voltage or current signals. The module provides 12-bit resolution, ensuring accurate measurement for demanding process applications. It includes optical isolation between field and logic circuits, protecting the controller from electrical noise. The front panel features a 48-pin connector for easy field wiring. Each channel includes its own analog-to-digital converter for synchronized sampling.

Technical Specifications

Parameter	Specification
Manufacturer	Siemens
Model Number	6ES5432-3BA12
Product Type	Analog Input Module
System Compatibility	SIMATIC S5-115U
Number of Inputs	8 (single-ended)
Input Signal Types	0-10V, ±10V, 0-20mA, 4-20mA
Resolution	12 bits
Accuracy	±0.5% of full scale
Conversion Time	40 ms per channel (max)
Isolation	Optical (field to logic)
Common Mode Rejection	> 80 dB
Power Consumption	2.5 W (typical)
Terminal Type	48-pin front connector
Dimensions	233 x 37 x 268 mm
Weight	0.38 kg
Operating Temperature	0°C to +60°C
Storage Temperature	-40°C to +85°C
Humidity	5% to 95% RH (non-condensing)
Certifications	CE, UL, CSA
Country of Origin	Germany

Key Features

High-Density 8-Channel Design – This module provides 8 analog inputs in a single slot, saving valuable chassis space.

Versatile Signal Compatibility – The module accepts voltage, current, and thermocouple signals.

High Accuracy – The 12-bit resolution ensures precise measurement for demanding applications.

Optical Isolation – The module protects the controller from field-side noise and voltage spikes.

Simultaneous Sampling – Each channel uses its own ADC for synchronized data acquisition.

LED Indicators – Status LEDs provide immediate visual feedback for each channel.

Applications

The Siemens 6ES5432-3BA12 excels in process control, monitoring systems, and data acquisition. It is ideal for chemical processing, power generation, and water treatment applications.