The Power Module fans are designed for extra long service life. For special requirements, replacement fans are available that can be exchanged quickly and easily. When selecting the external fan units, please note the hardware version printed on the device rating plate. The following pictures show the mounting location of internal and external fan units as an example:
PM230 Power Module, degree of protection IP55/UL Type 12, frame size FSC, with external fan unit in heat sink
PM230 Power Module, degree of protection IP55/UL Type 12, frame size FSC, with internal fan unit above CU230P‑2 Control Unit