Siemens 6ES5460-5AA31 | 8-Channel Analog Input Module

High-Precision Analog Input for SIMATIC S5 Systems

The 6ES5460-5AA31 analog input module provides high-precision signal acquisition for the SIMATIC S5 automation platform. This module converts analog sensor signals into digital values for the CPU to process. It handles multiple input types including voltage, current, and thermocouple signals. Consequently, this module suits demanding process control applications requiring accurate measurement.

Technical Specifications

Parameter	Specification
Manufacturer	Siemens
Product Line	SIMATIC S5
Model	6ES5460-5AA31
Module Type	Analog Input Module
Input Channels	8
Resolution	12/14 bits (selectable)
Input Types	±10 V, 0-10 V, ±20 mA, 4-20 mA, thermocouple (type B, E, J, K, L, N, R, S, T, U)
Conversion Time	25 ms per channel (at 50 Hz)
Accuracy	±0.15% (at 25°C)
Temperature Drift	±0.006% per °C
Common Mode Rejection	> 90 dB
Series Mode Rejection	> 60 dB (50/60 Hz)
Galvanic Isolation	Yes (between channels and backplane)
Power Supply	24 V DC (external)
Power Dissipation	5 W (max.)
Weight	0.65 kg
Operating Temperature	0°C to 60°C
Connection Type	Screw terminal
Compatibility	S5-115U, S5-135U, S5-155U
Certifications	CE, UL, CSA

Input Channel Configuration and Signal Types

The 6ES5460-5AA31 offers 8 analog input channels with flexible configuration options. Each channel supports multiple signal types, including voltage and current ranges. It also accommodates thermocouple sensors for temperature measurement. Therefore, this module provides versatility for various industrial sensing applications. Users can configure each channel individually to match the connected sensor’s output.

Conversion Performance and Accuracy

This module achieves high accuracy with a linearity error of ±0.15% at 25°C. It maintains stable performance across temperature variations with a low drift of ±0.006% per °C. The conversion time of 25 ms per channel ensures timely data acquisition for control loops. Furthermore, the module offers selectable 12-bit or 14-bit resolution for optimizing measurement granularity.

Noise Rejection and Isolation

The 6ES5460-5AA31 incorporates excellent common mode rejection of > 90 dB. It also provides > 60 dB series mode rejection at 50 and 60 Hz. These features effectively suppress electrical noise from industrial environments. Additionally, galvanic isolation between the channels and the backplane bus protects the controller from electrical spikes. Consequently, this module delivers reliable measurement data even in electrically noisy conditions.

Physical Characteristics and Installation

Weighing approximately 0.65 kg, this module fits standard S5 rack configurations. It uses screw terminal connections for secure field wiring. The front panel includes LED indicators for operational status and diagnostics. Users install the 6ES5460-5AA31 quickly without special tools.