6ES7422-5EH00-0AB0 Siemens SM 422 Digital Output Module | 16 DO 2A

Product Description

• Siemens 6ES7422-5EH00-0AB0 is a digital output module for the SIMATIC S7-400 system.
  • This SM 422 module provides 16 digital outputs.
  • Outputs operate at 20-120V AC with 2A per channel.
  • The module offers optical isolation for each channel.
  • It uses a 1 point per common configuration.

Technical Specifications

• Brand: Siemens
• Model: 6ES7422-5EH00-0AB0
• Series: SIMATIC S7-400 / SM 422
• Product Type: Digital Output Module
• Output Channels: 16 digital outputs
• Output Voltage: 20 – 120V AC
• Output Current per Channel: 2A
• Isolation: Optical isolation between channels
• Common Configuration: 1 point per common
• Net Weight: 1,040 kg
• Dimensions (cm): 23.30 x 29.90 x 3.70
• Country of Origin: USA

Compatibility & Lifecycle Information

• This module is part of the Siemens SIMATIC S7-400 product family.
• Siemens discontinued this product on October 1, 2016.
• Siemens did not provide a direct replacement for this model.
• The module supports applications requiring AC digital outputs.

Expert Review & Manager’s Insight

• Field Engineer Review:
  • This module delivers reliable AC switching for industrial loads.
  • Optical isolation protects the PLC backplane from voltage spikes.
  • Use this module for controlling contactors, relays, and valves.
• Product Manager’s Insight:
  • Plan for system migration if you currently use this module.
  • Siemens offers S7-1500 systems as a modern alternative.
  • Stock this product for existing S7-400 system maintenance.

Installation & Wiring Guide

• Mounting:
  • Install the module in an S7-400 rack or chassis.
  • Secure the module with the included mounting screws.
  • Ensure the system power supply meets total load requirements.
• Wiring:
  • Connect AC loads to the terminal block for each channel.
  • Use 1 common return per channel configuration.
  • Always disconnect power before wiring or removing the module.

Maintenance & Debugging Tips

• Check the module LED indicators for channel status.
• Regularly inspect terminal connections for tightness and corrosion.
• Keep spare modules to minimize downtime.

Typical Applications & Compatible Devices

• Suitable for:
  • AC solenoid valves and motor starters
  • Indicator lamps and alarm annunciators
  • Legacy S7-400 automation systems
  • Industrial process control panels

Package Contents

• 1x Siemens 6ES7422-5EH00-0AB0 Digital Output Module
• Product documentation (if available)

Frequently Asked Questions (FAQ)

• Is this module still available for purchase?
  • Siemens discontinued this module in 2016. We may have limited stock.
• Does this module work with S7-300 systems?
  • No, this module is specifically for the S7-400 product family.
• What AC voltage range does this module support?
  • The module supports 20-120V AC output signals.
• Can I use this module with DC loads?
  • No, this module is designed for AC loads only.
• What is the maximum current per output channel?
  • Each output channel can handle up to 2A current load.
• What should I do if I need a replacement?
  • Contact our team for advice on suitable replacement modules.

Buying Guide & Selection Advice

• Check your existing S7-400 rack slot availability before ordering.
• Verify your load current and voltage requirements against specifications.
• Consider system migration for new projects.
• Our team can help identify the best alternative for your application.

Contact & Support

• Email: sales@powergearx.com
• WhatsApp: +86 18030005825

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