Industrial Communication | Siemens | 6ES7 138-4CF03-0AB0 6ES7138-4CF03-0AB0 PM-E Power Modules for ET200S

Product Description: Siemens 6ES7138-4CF03-0AB0

The Siemens 6ES7138-4CF03-0AB0 is a technology module (TM-PULSE) for the SIMATIC ET 200S distributed I/O system. This module provides 2 channels of pulse width modulation (PWM) output, which can be used to control actuators such as proportional valves, heating elements, or motor controllers requiring variable pulse signals. Designed as a Standard (ST) performance class module, it fits into any ET 200S BaseUnit and communicates via the backplane bus. This module is ideal for precision control tasks where analog signals are replaced by high-frequency digital pulses, offering enhanced noise immunity and simplified wiring.

Key Features

• 2 PWM Outputs: Generates pulse-width modulated signals for actuator control
• Flexible Configuration: Adjustable duty cycle and frequency per channel
• Compact Design: 15 mm wide module for space-saving installation
• Standard Performance: Optimized for general control applications
• Integrated Diagnostics: Includes status LEDs and diagnostic capability via TIA Portal or STEP 7
• BaseUnit Compatible: Installs on standard ET 200S BaseUnits such as BU20

Technical Specifications

• Product Type: Technology Module (PWM Output)
• Part Number: 6ES7138-4CF03-0AB0
• Series: SIMATIC ET 200S
• Module Type: TM-PULSE 2×PWM ST
• Number of Channels: 2 independent PWM outputs
• Output Voltage: Follows 24 V DC system supply
• Pulse Frequency Range: 0.1 Hz to 20 kHz (typical)
• Duty Cycle Range: 0–100%, adjustable in software
• Diagnostics: Channel diagnostics, fault detection
• Connection Type: Push-in via BaseUnit (e.g., BU type E0)
• Module Width: 15 mm
• Operating Voltage: Supplied via ET 200S backplane
• Operating Temperature: 0°C to +60°C
• Protection Class: IP20
• Weight: Approx. 70 g

Application Areas

• Valve and Damper Control: Provides PWM control of electropneumatic or electromechanical valves
• Heating and Lighting: Drives resistive loads with pulse modulation for energy- efficient control
• Motor Control: Controls small DC motors or stepper drivers via PWM signals
• Analog Signal Emulation: Replaces analog outputs in systems requiring digital signal immunity

Advantages

• Precise PWM Generation: High-resolution signal control for variable-speed or variable-force actuators
• Compact and Modular: Easily integrated into ET 200S stations without expanding cabinet footprint
• Seamless Integration: Fully configurable in TIA Portal and compatible with Siemens PLCs
• Diagnostics Support: Quickly detect wiring or configuration errors
• Cost- Effective Alternative: Replaces analog control with digital PWM for better reliability and reduced noise sensitivity