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Useful functions
4
PARAMETERS
4.26 Useful functions
4.26.1 Cooling fan operation selection (Pr. 244)
⋅ In either of the following cases, fan operation is regarded as faulty, [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 fan stops during the fan ON command while the inverter is running
⋅ For the terminal used for FAN signal output, set "25" (positive logic) or "125" (negative logic) in any of Pr. 190 to Pr.
196 (output terminal function selection), and for the LF signal, set "98" (positive logic) or "198" (negative logic).
Purpose Parameter that must be Set
Refer to
Page
Increase cooling fan life Cooling fan operation selection Pr. 244 385
To determine the maintenance time
of parts.
Inverter part life display Pr. 255 to Pr. 259 386
Maintenance output function Pr. 503, Pr. 504 389
Current average value monitor
signal
Pr. 555 to Pr. 557 390
Freely available parameter Free parameter Pr. 888, Pr. 889 392
You can control the operation of the cooling fan (FR-A720-1.5K or higher, FR-A740-2.2K or higher) built in the
inverter.
Parameter
Number
Name Initial Value Setting Range Description
244 Cooling fan operation selection 1
0
A cooling fan operates at power on
Cooling fan ON/OFF control invalid (The
cooling fan is always ON at power ON)
1
Cooling fan ON/OFF control valid
The fan is always ON while the inverter is
running. During a stop, the inverter status
is monitored and the fan switches ON-
OFF according to the temperature.
CAUTION
⋅ When terminal assignment is changed using Pr. 190 to Pr. 196 (output terminal function selection), the other functions may be
affected. Set parameters after confirming the function of each terminal.
♦ Parameters referred to ♦
Pr. 190 to Pr. 196 (output terminal function selection) Refer to page 239