Check as follows before the actual installation and usage:
1. Check that the ambient temperature of the VFD is below 40°C. If exceeds, derate according to the detailed information of Appendix B. Additionally, the VFD cannot be used if the ambient temperature is above 50°C. Note: For the cabinet VFD, the ambient temperature means the air temperature inside the cabinet. |
2. Check that the ambient temperature of the VFD in actual usage is above -10°C. If not, add heating facilities. Note: For the cabinet VFD, the ambient temperature means the air temperature inside the cabinet. |
3. Check that the altitude of the actual usage site is below 1000m. If exceeds, derate1% for every additional 100m. |
4. Check that the humidity of the actual usage site is below 90% and condensation is not allowed. If not, add additional protection VFDs. |
5. Check that the actual usage site is away from direct sunlight and foreign objects cannot enter the VFD. If not, add additional protective measures. |
6. Check that there is no conductive dust or flammable gas in the actual usage site. If not, add additional protection to VFDs. |