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225
Useful functions
4.21 Useful functions
4.21.1 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 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
or
Pr. 192 (output
terminal function selection)
, and for the LF signal, set "98 (positive logic) or 198 (negative logic)".
Purpose
Parameter that should be Set
Refer to Page
Increase cooling fan life
Cooling fan operation
selection
Pr. 244
To determine the maintenance time
of parts.
Inverter part life display
Pr. 255 to Pr. 259
Maintenance output
function
Pr. 503, Pr. 504
Current average value
monitor signal
Pr. 555 to Pr. 557
Freely available parameter
Free parameter
Pr. 888, Pr. 889
You can control the operation of the cooling fan (FR-D740-036 or more, FR-D720S-070 or more) built in the inverter.
Parameter
Number
Name
Initial Value
Setting Range
Description
244
Cooling fan operation
selection
1
0
Operates in power-on status.
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.
The above parameters can be set when
Pr.160 Extended function display selection
= "0".
NOTE
Changing the terminal assignment using
Pr. 190, Pr. 192 (output terminal function selection)
may affect the other functions.
Make setting after confirming the function of each terminal.
Parameters referred to
Pr. 190, Pr. 192 (output terminal function selection)
Содержание FR-D700 Series
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