Fans
See Maintenance intervals (page 213) for the fan replacement interval in average
operation conditions.
Parameter 05.04 Fan on-time counter indicates the running time of the cooling fan.
Reset the counter after a fan replacement. See the firmware manual.
In a speed-controlled fan, the speed of the fan matches the cooling needs. This increases
the life span of the fan.
Main fans are speed controlled. When the drive is stopped, the main fan runs at low
speed until the drive cools down. IP21 (UL Type 1) frames R5…R9 and all IP55
(UL Type 12) frames have auxiliary fans that are not speed controlled and run all the
time when the control unit is powered.
Replacement fans are available from the manufacturer. Do not use other than specified
spare parts.
Maintenance 217
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