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4.21 Useful functions
Purpose
To increase cooling fan life
To determine the maintenance time
of parts
Freely available parameter
4.21.1 Cooling fan operation selection (Pr. 244)
You can control the operation of the cooling fan (1.5K or higher) built in the inverter.
Parameter
Name
Number
Cooling fan operation
244
selection
The above parameter can be set when Pr.160 Extended function display selection = "0". (Refer to page 165.)
In either of the following cases, fan operation is regarded as faulty as [FN] is shown on the operation panel, and the fan fault
(FAN) and alarm (LF) signals are output.
Pr. 244 = "0"
When the fan comes to a stop with power-ON.
Pr. 244 = "1"
When the inverter is running and the fan stops during fan ON command.
For the terminal used for FAN signal output, set "25 (positive logic) or 125 (negative logic)" to Pr. 190, Pr. 192 or Pr. 197
(output terminal function selection), and for the LF signal, set "98 (positive logic) or 198 (negative logic)".
NOTE
Changing the terminal assignment using Pr. 190, Pr. 192, and Pr. 197 (output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
Parameters referred to
Pr. 190, Pr. 192, Pr. 197 (output terminal function selection)
Parameter that should be Set
Cooling fan operation
selection
Inverter part life display
Maintenance output
function
Current average value
monitor signal
Free parameter
Initial Value
Setting Range
1
Refer to page 122.
Useful functions
Pr. 244
Pr. 255 to Pr. 259
Pr. 503, Pr. 504
Pr. 555 to Pr. 557
Pr. 888, Pr. 889
Description
Operates in power-ON status.
0
Cooling fan ON/OFF control invalid (the
cooling fan is always ON at power-ON)
Cooling fan ON/OFF control valid
The fan is always ON while the inverter is
1
running. During a stop, the inverter status
is monitored and the fan switches ON/
OFF according to the temperature.
Refer to Page
229
230
234
235
237
4
229
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