PE® drives are designed to be mounted vertically on an electrical panel (mounted so the print on the device is upright). The heat sink fins in the unit are designed to cool best with that orientation. However, if the drive is mounted in an area where the normal ambient temperatures are much lower than the maximum temperature rating of the unit, it may be mounted in other directions – consult PE® for further help in this scenario.
Mount the drive out of direct sunlight or radiant heat with spacing in an enclosure that allows adequate ventilation of the heat sink (refer to the drive’s manual for Clearance and Wiring specifications).