Useful Functions; Cooling Fan Operation Selection (Pr. 244) - Mitsubishi Electric FR-E720-008 Instruction Manual

Useful functions

4.22 Useful functions

Purpose
Increase cooling fan life
To determine the maintenance time
of parts.
Freely available parameter

4.22.1 Cooling fan operation selection (Pr. 244)

You can control the operation of the cooling fan (FR-E720-080(SC) or more, FR-E740-040(SC) or more, FR-E720S-050
or more) built in the inverter.
Parameter
Number
Cooling fan operation
244
selection
The above parameters can be set when Pr.160 User group read selection = "0". (Refer to page 187)
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 any of Pr. 190 to Pr. 192 (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 to Pr. 192 (output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
Parameters referred to
Pr.190 to Pr.192 (output terminal function selection)
262
Cooling fan operation
selection
Inverter part life display
Maintenance output
function
Current average value
monitor signal
Free parameter
Name Initial Value
Parameter that should be Set
Pr. 255 to Pr. 259
Pr. 555 to Pr. 557
Setting Range
0
1
1
Refer to page 144
Pr. 244
Pr. 503, Pr. 504
Pr. 888, Pr. 889
Description
Operates in power-ON status.
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
running. During a stop, the inverter status
is monitored and the fan switches ON-
OFF according to the temperature.
Refer to Page
262
263
267
268
270