Mitsubishi Electric FR-A700 Instruction Manual page 186

Parameter overview
Parameter
Func-
Name
tion
Stall prevention
22
operation level
Stall prevention opera-
tion level compensa-
23
tion factor at double
speed
Second stall prevention
48
operation current
Second stall prevention
49
operation frequency
Stall prevention opera-
tion reduction starting
66
frequency
Third stall prevention
114
operation current
Thrid stall prevention
115
operation frequency
Stall prevention level at
148
0V input.
Stall prevention level at
149
10V input.
Voltage reduction
selection during stall
154
prevention operation
Stall prevention
156
operation selection
OL signal output timer
157
Terminal 4 function
858
assignment
Terminal 1 function
868
assignment
Tab. 6-1: Parameter overview (6)
6 - 6
Incre- Initial Setting
ments Value Range
0
0.1% 150%
0.1–400%
0–200%
0.1% 9999
9999
0
0.1% 150%
0.1–220%
0
0.01Hz 0Hz 0.01–400Hz
9999
0.01Hz 50Hz 0–400Hz
0
0.1% 150%
0.1–220%
0
0.01Hz 0
0.01–400Hz
0.1% 150% 0–220%
0.1% 200% 0–220%
0
1 1
1
0–31/100/
1 0
101
0–25s
0.1s 0s
9999
Refer to page 6-60
Description
Stall prevention operation
selection becomes invalid.
Function as stall prevention opera-
tion under V/f control and
advanced magnetic flux vector
control. Set the current value at
which stall prevention operation is
started. Refer to page 6-7 for
torque limit level.
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
The stall prevention operation level
can be set.
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.
Third stall prevention operation
invalid
The stall prevention operation level
can be set.
Third stall prevention operation
invalid
Set the frequency at which stall
prevention operation of Pr. 114 is
started.
When "4" is set in Pr. 868
(Pr. 858), stall prevention opera-
tion level can be changed by the
analog signal input to terminal 1
(terminal 4).
With voltage You can select
reduction whether to use
output voltage
reduction during
Without volt-
stall prevention
age 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 preven-
tion is activated.
Without the OL signal output
Parameter
All
Para- Para-
para-
meter meter
meter
copy clear
Refer
clear
to
page
✔: enabled
—: disabled
✔ ✔ ✔
✔ ✔ ✔
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✔ ✔ ✔
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✔ ✔ ✔
6-155
✔ ✔ ✔
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