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Operation selection function parameters
2
FUNCTIONS
2.10.6 Cooling fan operation selection (Pr. 76 )
<Setting>
CAUTION
Do not reset the inverter with the start signal on.
Otherwise, the motor will start instantly after resetting, leading to
potentially hazardous conditions.
You can control the operation of the cooling fan built in the inverter (whether
there is a cooling fan or not depends on the model.).
Parameter Name
Factory
Setting
Setting
Range
Remarks
76
Cooling fan
operation
selection
00, 1
0: Operation is performed with
power on.
1: Cooling fan ON/OFF control
Setting is
enabled when
Pr. 30 = "1"
Setting Description
0 Operated at power on (independent of whether the inverter is running or at a stop).
1
Cooling fan ON/OFF control valid
Always on during inverter operation
During stop (reset or error), the inverter status is monitored and the fan is
switched on/off according to the temperature.
• Heatsink temperature is less than 40
o
C (104
o
F) .............Cooling fan off
• Heatsink temperature is not less than 40
o
C (104
o
F) .......Cooling fan on
REMARKS
In either of the following cases, fan operation is regarded as faulty, is shown on the
operation panel, and the minor fault (LF) signal is output. Use any of Pr. 64, Pr. 65 (output
terminal function selection) to allocate the terminal used to output the LF signal.*
•Pr. 76 = "0"
When the fan comes to a stop with power on.
•Pr. 76 = "1"
When the inverter is running and the fan stops during fan ON command.
CAUTION
* When the terminal assignment is changed using Pr. 64, Pr. 65, the other
functions may be affected. Confirm the functions of the corresponding
terminals before making settings.