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Mitsubishi Electric FR-F720P-0.75K Instruction Manual Page 113

Fr-f700p series.
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Parameter list
Parameter
Name
Useful functions — Lifespan extension of the cooling fan (Pr.244)
Cooling fan operation
244
selection
Adjusting the output torque (current) of the motor — Slip compensation (Pr.245 to Pr.247)
245
Rated slip
Slip compensation
246
time constant
Constant-power
range slip
247
compensation
selection
Motor brake and stop operation — Motor stop method and start signal selection (Pr.250)
Function assignment of external terminal and control — Start signal selection (Pr.250)
250
Stop selection
Operation setting at fault occurrence — Input phase failure protection selection (Pr.251,
Pr.872)
Output phase loss
251
protection selection
Input phase loss
872
protection selection
252, 253
Refer to Pr.73.
106
Incre-
Initial
Range
ments
Value
0
1
1
1
0 to 50%
0.01%
9999
9999
0.01s
0.5s
0.01 to 10s
0
1
9999
9999
0 to 100s
1000 to 1100s
0.1s
9999
9999
8888
0
1
1
1
0
1
0
1
Description
Operates at power ON
Cooling fan ON/OFF control invalid (The
cooling fan is always ON at power ON)
Cooling fan ON/OFF control valid
The fan is normally on during inverter
operation. The fan switches ON/OFF according
to the temperature during a stop of the inverter
whose status is monitored.
Used to set the rated motor slip.
No slip compensation
Used to set the response time of slip
compensation. When the value is smaller,
response will be faster. However, as load
inertia is greater, a regenerative overvoltage
(E.OV ) error is more liable to occur.
Slip compensation is not made in the constant
power range (frequency range above the
frequency set in Pr.3)
Slip compensation is made in the constant
power range.
STF signal:
The motor is coasted
Forward rotation start
to a stop when the
STR signal:
preset time elapses
Reverse rotation
after the start signal is
start
turned OFF.
When 1000s to 1100s
STF signal: Start
is set (Pr. 250 setting-
signal
1000)s later, the motor
STR signal: Forward/
coasts to stop.
reverse signal
STF signal:
Forward rotation start
STR signal:
When the start signal
Reverse rotation
is turned OFF, the
start
motor decelerates to
STF signal: Start
stop.
signal
STR signal: Forward/
reverse signal
Without output phase loss protection
With output phase loss protection
Without input phase loss protection
With input phase loss protection
: enabled
× : disabled
V/F
V/F
V/F
S
S
S
MFVC
MFVC
MFVC

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