Selecting a Drive | International English |
3.6Environmental Considerations
The inverter is designed for operation in an industrial environment. However there are certain limitations which must be considered; the following check list should help:
·Check that the airflow through the inverter will not be blocked by wiring etc.
·Make sure the temperature of the air does not exceed 50°C. Remember to allow for any temperature rise inside the box or cubicle.
·Most inverters are available with protection levels of IP20 , IP21 or IP56. IP20 and IP21 units need additional protection against dust, dirt, and water. For a detailed description of IP rating see Appendix A.
·The inverter is designed for fixed installation and is not designed to withstand excessive shock and vibration.
·The inverter will be damaged by corrosive atmospheres.
·Protect the unit from dust; dust can build up inside the unit, damage the fans, and prevent proper cooling. Conductive dust, such as metal dust, will damage the unit.
·Give due consideration to Electromagnetic Compatibility (EMC), such as:
oWill the inverter be protected from the effects of power equipment such as Power Factor Correction equipment, Resistance Welding Equipment etc.?
oWill the inverter be well grounded?
·How will the inverter and any control equipment (contactors, PLCs, relays sensors etc.) interact?
IF IN DOUBT, consult the guidelines and specification information in the Operating Instructions, or see section 6.1.
16 | MICROMASTER Applications Handbook |