Mitsubishi Electric FR-A700 Instruction Manual page 336

Adjust the output torque of the motor (current)
Pr.
Name
No.
Stall prevention operation
22
level
Stall prevention operation
23
level compensation factor at
double speed
Second stall prevention oper-
48
ation current
Second stall prevention oper-
49
ation frequency
Stall prevention operation
66
reduction starting frequency
Third stall prevention opera-
114
tion current
Thrid stall prevention opera-
115
tion frequency
Stall prevention level at 0V
148
input
Stall prevention level at 10V
149
input
Voltage reduction selection
154
during stall prevention opera-
tion
Stall prevention operation
156
selection
157
OL signal output timer
Terminal 4 function
858
assignment
Terminal 1 function
859
assignment
When Pr. 570 "Multiple rating setting" ≠ "2", performing all parameter clear and inverter reset
changes the initial value and setting range.
6 - 156
Initial Setting
Description
Value Range
Stall prevention operation selec-
0
tion becomes invalid.
150%
Set the current value at which stall
prevention operation will be
0.1–400%
started.
The stall operation level can be
reduced when operating at a high
0–200%
9999
speed above the rated frequency.
9999 Constant according to Pr. 22
Second stall prevention operation
0
invalid
150%
The second stall prevention oper-
0.1–220%
ation level can be set.
Second stall prevention operation
0
invalid
Set the frequency at which stall
0Hz 0.01–400Hz prevention operation of Pr. 48 is
started.
Pr. 48 is valid when the RT signal
9999
is on.
Set the frequency at which the
50Hz 0–400Hz stall operation level is started to
reduce.
Third stall prevention operation
0
invalid
150%
Stall prevention operation level
0.1–220% can be changed with the X9 sig-
nal.
Third stall prevention operation
0
invalid
0Hz
Set the frequency at which stall
0.01–400Hz prevention operation when the X9
signal is on starts.
Stall prevention operation level
150% 0–220%
can be changed by the analog
signal input to terminal 1 (termi-
200% 0–220%
nal 4).
With voltage
0
reduction
1
Without volt-
1
age reduction
You can select whether stall pre-
vention operation and fast-
0–31/
0
100/101
response current limit operation
will be performed or not.
Set the output start time of the OL
0–25s signal output when stall preven-
0 s
tion is activated.
9999 Without the OL signal output
By setting "4", the stall prevention
0 0/1/4/9999 operation level can be changed
with a signal to terminal 4.
By setting "4", the stall prevention
0 0–6/9999 operation level can be changed
with a signal to terminal 1.
Parameters referred to
22
73
178–189
190–196
570
858
868
You can select
whether to use
output voltage
reduction dur-
ing stall preven-
tion operation or
not.
Parameter
Refer to
Section
Torque limit level 6.3.2
Analog input selec- 6.20.2
tion
Input terminal 6.14.1
function selection)
Output terminal 6.14.5
function selection
Multiple rating set- 6.7.5
ting
Terminal 4 func- 6.20.1
tion assignment
Terminal 1 func- 6.20.1
tion assignment