Check as followings before the actual installation and usage:
1. Check that the ambient temperature of the VFD is below 40°C. If exceeds, derate 1% for every additional 1°C. 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. When the altitude exceeds 1000m but is lower than 3000m, derate 1% for every additional 100m. When the altitude exceeds 2000m, configure an isolation transformer on the input end of the VFD. When the altitude exceeds 3000m but is lower than 5000m, contact our company for technical consultation. Do not use the VFD at an altitude higher than 5000m. |
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. |