Bedienungsanleitung: 2/2-Weg-Solenoidvent Il Typ 0290.pdf

### Overview

The provided text appears to be an excerpt from a technical manual or datasheet for electromechanical valves, specifically focusing on their operational conditions and limitations. The document outlines various parameters related to the valve's performance, including electrical and environmental specifications.

### Key Points

1. Operational Conditions:
- Dauerbetrieb (Continuous Operation): Suitable for continuous use unless otherwise specified.
- Aussetzbetrieb (Intermittent Operation): Parameters need to be determined based on specific conditions outlined in the document.

2. Temperature and Environmental Limits:
- Maximum ambient temperature for operation is +55°C without electronics, and up to +70°C with high-performance electronics.
- Temperature limits vary depending on the type of medium (e.g., air, water, inert gases) and the sealing material used (NBR, FKM, EPDM).

3. Sealing Materials:
- Different materials are suitable for different media and temperature ranges.
- NBR is suitable for neutral media like air and water.
- FKM can handle more aggressive media such as hot oils.
- EPDM is used for oil-based and non-oily media.

4. Electrical Specifications:
- The document specifies conditions for both continuous and intermittent operation, with particular attention to the number of allowable switching cycles based on power ratings (e.g., 80/6 W, 90/7 W).
- A temperature protection switch is included in some models to prevent overheating during intermittent use.

5. Electrical Operation Parameters:
- The document provides a formula for calculating operational parameters such as spieldauer (play duration), einschaltdauer (on-time), and stromlose Pause (off-time) based on DIN VDE 0580 standards.
- These calculations help determine the relative duty cycle and switching frequency.

### Conclusion

This excerpt is part of a comprehensive guide for users to understand the operational limits and specifications of electromechanical valves. It emphasizes the importance of adhering to specified conditions to ensure safe and efficient operation, particularly concerning temperature and electrical load management. Users should refer to the complete document for detailed instructions on installation, maintenance, and troubleshooting.