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Mitsubishi Electric FR-F720P-0.75K Instruction Manual Page 97

Fr-f700p series.
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Parameter list
Parameter
Name
Adjusting the output torque (current) of the motor — Stall prevention (Pr.22, Pr.23, Pr.48,
Pr.49, Pr.66, Pr.148, Pr.149, Pr.154, Pr.156, Pr.157)
Stall prevention
22
operation level
Stall prevention
23
operation level
V/F
V/F
V/F
compensation factor
S
S
S
MFVC
MFVC
MFVC
at double speed
Second stall
prevention operation
48
current
Second stall
prevention operation
49
frequency
Stall prevention
66
operation reduction
V/F
V/F
V/F
starting frequency
S
S
S
MFVC
MFVC
MFVC
Stall prevention level
148
at 0V input
Stall prevention level
149
at 10V input
Voltage reduction
154
selection during stall
V/F
V/F
V/F
prevention operation
S
S
S
MFVC
MFVC
MFVC
Stall prevention
156
operation selection
OL signal output timer
157
*
Performing IPM parameter initialization changes the settings.
24 to 27
Refer to Pr. 4 to Pr. 6.
Frequency setting with terminals (contact input) — Compensation of multi speed and
remote setting inputs (Pr.28)
Multi-speed input
28
compensation
selection
90
Incre-
Initial
Range
ments
Value
0
0.1%
120%
*
0.1 to 150%
9999
0 to 200%
0.1%
9999
9999
0
0.1%
120%
0.1 to 150% The stall prevention operation level can be set.
0
0.01 to
0.01Hz
0Hz
400Hz
9999
0.01Hz
60Hz
0 to 400Hz
0.1%
120%
0 to 150%
0.1%
150%
0 to 150%
0
1
1
1
0 to 31,
1
0
100, 101
0 to 25s
0.1s
0s
9999
(Refer to page 43)
0
1
0
1
Description
Stall prevention operation selection becomes
invalid.
Set the current value at which stall prevention
operation is started.
Analog variable
The stall operation level can be reduced when
operating at a high speed above the rated
frequency.
Constant according to Pr. 22
Second stall prevention operation invalid
Second stall prevention operation invalid
Set the frequency at which stall prevention
operation of Pr. 48 is started.
Pr. 48 is valid when the RT signal is ON.
Set the frequency at which the stall operation
level is started to reduce.
Stall prevention operation level can be
changed by the analog signal input to terminal
1.
You can select
With voltage reduction
whether to use output
voltage reduction
Without voltage
during stall prevention
reduction
operation or not.
Pr. 156 allows you to select whether to use stall
prevention or not according to the acceleration/
deceleration status.
Set the output start time of the OL signal output
when stall prevention is activated.
Without the OL signal output
Without compensation
With compensation
: enabled
× : disabled

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