Product Overview
The Siemens 6ES7422-5EH00-0AB0 is a digital output module from the SIMATIC S7-400 series. It provides 16 digital outputs with a voltage range of 20 to 120 V AC and a current rating of 2 A per output. This module features optical isolation and one point per common, ensuring reliable signal integrity in industrial environments. Although discontinued, the Siemens 6ES7422-5EH00-0AB0 remains a critical spare for existing S7-400 installations, offering long-term value by extending system life.
Technical Specifications
| Parameter |
Value |
| Outputs |
16 digital outputs |
| Voltage Range |
20 – 120 V AC |
| Output Current |
2 A per output |
| Isolation |
Optically isolated, 1 point per common |
| Net Weight |
1.040 kg |
| Dimensions (W x H x D) |
23.30 x 29.90 x 3.70 cm |
| Country of Origin |
United States |
| RoHS Compliance |
Not RoHS compliant |
Industry Applications
The Siemens 6ES7422-5EH00-0AB0 is designed for heavy-duty control applications requiring robust AC switching. Typical uses include:
- Motor starters and contactor control in manufacturing lines
- Valve actuation in chemical processing plants
- Lighting and heating element control in building automation
By utilizing the Siemens 6ES7422-5EH00-0AB0, facilities can maintain existing S7-400 systems without costly redesign, maximizing return on investment.
Installation & Setup Guidance
Install the Siemens 6ES7422-5EH00-0AB0 in a standard S7-400 rack. Ensure the module is properly keyed and inserted firmly. Connect the AC power supply to the designated terminals, observing polarity. Use appropriate wire gauges for 2 A outputs. After mounting, configure the module using Siemens STEP 7 software to assign addresses and set parameters. Verify output operation with a no-load test before connecting field devices.
Maintenance & Reliability
The Siemens 6ES7422-5EH00-0AB0 offers high reliability with minimal maintenance requirements. Periodically inspect for signs of overheating or loose connections. Clean the module and rack contacts with isopropyl alcohol if needed. Since the module is discontinued, securing spare units early can prevent extended downtime. Replacing aging modules proactively reduces system failure risks.
Selection Guide & Purchasing Advice
Before purchasing the Siemens 6ES7422-5EH00-0AB0, verify your S7-400 rack compatibility and power supply capacity. This module requires a 24 V DC backplane power supply. As a discontinued product, availability is limited. PLC Source PRO (available at ubest101.myshopify.com) offers genuine spares for legacy systems. Ensure your order quantity matches your replacement needs.