Cooling Fan Operation Selection (Pr. 244); Output Phase Failure Protection Selection (Pr. 251) - Mitsubishi FR-F500 Instruction Manual

4.2.51 Cooling fan operation selection (Pr. 244)

Pr. 244 "cooling fan operation selection"
You can control the operation of the cooling fan built in the inverter (200V class 1.5K or more, 400V
class 2.2K or more).
Parameter
Factory Setting
Number
244 0
<Setting>
Setting
0 Operated at power on (independently of whether the inverter is running or at a stop).
Cooling fan on-off control valid
1 (The cooling 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 temperature.)
<Reference>
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 light fault (LF) signals are output. Use Pr. 190 to Pr. 195 (multi-function outputs) to
allocate the terminals used to output the FAN and LF signals.
1) Pr. 244 = "0"
When the fan comes to a stop with power on.
2) Pr. 244 = "1"
When the fan stops during the fan ON command while the inverter is running, or when the fan starts during
the fan OFF command.
Note: When the terminal functions are changed using Pr. 190 to Pr. 195, the other functions may be
affected. Make setting after confirming the functions of the corresponding terminals.

4.2.52 Output phase failure protection selection (Pr. 251)

Pr. 251 "output phase failure protection selection"
You can disable the output phase failure protection (E.LF) function which will stop the inverter output if one of
the three phases (U, V, W) on the output side (load side) of the inverter opens.
Parameter Setting
Number Range
251 0, 1
Setting Range
0, 1
Description
Minimum
Setting Factory Setting
Increments
1 1
143
PARAMETERS
Description
0: Without output phase failure protection
1: With output phase failure protection
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