6ES7134-6HD00-0BA1 SIEMENS analog input module

Siemens 6ES7134-6HD00-0BA1 SIMATIC ET 200SP Analog Input Module

The Siemens 6ES7134-6HD00-0BA1 is a professional-grade SIMATIC ET 200SP Analog Input Module (product type designation: AI 4xU/I 2-wire ST) manufactured by Siemens AG, a global leader in industrial automation since 1847. This module is part of the ET 200SP distributed I/O system — a modular, flexible remote I/O platform designed for integration with SIMATIC S7-1200 and SIMATIC S7-1500 PLCs via PROFINET or PROFIBUS networks.

Important Correction on Product Type: The current invshop listing uses the description "DI 4x24VDC HF" (Digital Input), which is incorrect. The 6ES7134-6HD00-0BA1 is an Analog Input module — not a digital input module. It processes continuous voltage and current signals from industrial sensors and transducers, not discrete on/off digital signals. The correct product name is "AI 4xU/I 2-wire Standard" and the module supports both voltage (0-10V, +/-10V) and current (0-20mA, 4-20mA) measurement.

Technical Specifications

Analog Input Ranges

Diagnostics and Status LEDs

Signal Measurement and Conversion

• Sigma-Delta ADC: The module uses an integrating Sigma-Delta analog-to-digital converter, which provides excellent noise rejection — particularly important in electrically noisy industrial environments with electromagnetic interference from motor drives and contactors.

• Integration Times: 180ms (50Hz), 60ms (60Hz), or 50ms (16.6Hz) — parameterizable to match local mains frequency for maximum interference suppression.

• Smoothing: Four-step parameterizable smoothing (None, Low, Medium, High) to filter measurement noise in the PLC program.

• Oversampling: Not supported on this model. For oversampling requirements, consider the 6ES7134-6HD01-0BA1 (HF variant with higher feature set).

• Max Cable Length: Up to 1,000m for shielded current input cables; 200m for voltage measurement cables.

Integration with ET 200SP System

The 6ES7134-6HD00-0BA1 plugs into a BU type A0 or A1 BaseUnit (sold separately) which provides the backplane bus connection, spring-clip terminal blocks for field wiring, and the 24V supply bus. The BaseUnit color code is CC03 (light blue), which ensures the correct module is inserted in the correct slot during maintenance — a key anti-confusion feature in large distributed I/O systems with many module types.

The module is configured and programmed using Siemens STEP 7 TIA Portal (V11 SP2 or higher) or the classic STEP 7 V5.5 SP3 programming environment. During configuration, each channel can be independently parameterized for:

• Signal type (voltage or current, with specific range)

• Measurement type (2-wire transmitter connection)

• Smoothing factor

• Diagnostics enable/disable per channel

• Limit monitoring (not available on this ST variant — requires HF with limit value alarm)

Applications

• Process Automation: Connecting 2-wire current-loop transmitters (4-20mA) for pressure, flow, level, and temperature measurement in water treatment, chemical processing, and food & beverage industries.

• Factory Automation: Voltage signal acquisition from analog sensors in packaging lines, material handling, and assembly systems.

• Building Automation (HVAC): Reading 0-10V or 4-20mA signals from HVAC sensors for climate control in commercial buildings.

• Machine Building: Distributed I/O at the machine level with S7-1500 F-CPU for functional safety integration.

• Renewable Energy: Solar inverter and battery storage system monitoring via analog inputs on ET 200SP.

Frequently Asked Questions