Check the following before the actual installation and use:
Note: For a cabinet-built VFD, the ambient temperature is the air temperature inside the cabinet.
l Check whether the ambient temperature of the VFD exceeds 40°C. If it exceeds 40°C, derate 1% for every increase of 1°C. It is not recommended to use the VFD if the ambient temperature exceeds 50°C. |
l Check whether the ambient temperature of the VFD in actual use is lower than -10°C. If yes, use heating facilities. |
l When the altitude exceeds 1000m, derate by 1% for every increase of 100m. When the altitude exceeds 2000m, configure an isolation transformer at the VFD input end. It is not recommended that the VFD be used at the altitude higher than 5000m. |
l Check whether the humidity of the actual usage site exceeds 90% and condensation occurs. If yes, take additional protective measures. |
l Check whether the actual use site may be exposed to direct sunlight or may have the chance of ingress of foreign objects. If yes, take additional protective measures. |
l Check whether there is dust, explosive gas, or flammable gas in the actual use site. If yes, take additional protective measures. |