72
Adjustment of the output torque (current) of the motor
(4) Set multiple stall prevention operation levels
(Pr. 48, Pr. 49
)
Setting "9999" in
Pr. 49 Second stall prevention operation frequency
and turning the RT signal on make
Pr. 48 Second stall
prevention operation current
valid.
In
Pr. 48
, you can set the stall prevention operation level at the output frequency from 0Hz to that set in
Pr. 49
.
During acceleration, however, the operation level is as set in
Pr. 22
.
This function can also be used for stop-on-contact or similar operation by decreasing the
Pr. 48
setting to weaken the
deceleration torque (stopping torque).
(5) Stall prevention operation level setting by terminal 1 (analog variable)
(Pr. 148, Pr. 149)
REMARKS
When
Pr. 49
z
"9999" (level changed according to frequency) and
Pr. 48
= "0%", the stall prevention operation level is 0% at or
higher than the frequency set in
Pr. 49
.
In the initial setting, the RT signal is assigned to the RT terminal. By setting "3" to any of
Pr. 178 to Pr. 189 (input terminal function
selection)
, you can assign the RT signal to the other terminal.
CAUTION
Changing the terminal assignment using
Pr. 178 to Pr. 189 (input terminal function selection)
may affect the other functions. Please
make setting after confirming the function of each terminal.
The RT signal acts as the second function selection signal and makes the other second functions valid.
(Refer to page 113)
Set
Pr. 22
Stall prevention operation level
to "9999".
Input 0 to 5V (or 0 to 10V) to terminal 1.
Select 5V or 10V using
Pr. 73 Analog input
selection
. When
Pr. 73
= "1" (initial value), 0 to
r
10V is input.
Set the current limit level at the input voltage of 0V
in
Pr. 148 Stall prevention level at 0V input.
Set the current limit level at the input voltage of
10V or 5V in
Pr. 149 Stall prevention level at 10V input
REMARKS
The fast-response current limit level cannot be set.
When
Pr. 22
= 9999 (analog variable), functions other than the terminal 1 (auxiliary input, override function, PID control) are not
executed.
Stall prevention
operation current
During acceleration
Running frequency
Pr.48
Pr.49
During deceleration/constant speed
During deceleration/constant speed
During deceleration/constant speed
Pr. 49
Setting
Operation
0(initial value)
The second stall prevention operation is not performed.
0.01Hz to 400Hz
If the output frequency is equal to or less than the frequency set in
Pr. 49
, the second stall prevention function activates. (during
constant speed or deceleration)
*1
9999
*2
The second stall prevention function is performed according to
the RT signal.
RT signal ON ... Stall level
Pr. 48
RT signal OFF ... Stall level
Pr. 22
*1
The smaller setting of the stall prevention operation levels set in
Pr. 22
and
Pr. 48
has a higher
priority.
*2
When
Pr. 22
= "9999" (Stall prevention operation level analog input), the stall prevention
operation level also switches from the analog input (terminal 1 input) to the stall prevention
operation level of
Pr. 48
when the RT signal turns on.
(The second stall prevention operation level cannot be input in an analog form.)
Pr. 22
used
Output
frequency (Hz)
Output
frequency
Stall
prevention
level
Set
frequency
Time
Pr.49
Set frequency exceeds
Pr. 49
Pr. 48
used
Pr. 22
used
Output
frequency (Hz)
Output
frequency
Set
frequency
Time
Pr.49
Pr. 48
used
Set frequency is
Pr. 49
or less
100%
50%
Current limit level (%)
(5VDC/10V)
(-5VDC/10V)
Input voltage (V)
Current limit level at input voltage 10V/5V.
Set using
Pr. 149
.
Current limit level at input voltage 0V.
Set using
Pr. 148
.
0
120%
110%
Initial setting
Summary of Contents for F700
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