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Adjusting the output torque (current) of the motor
(3) Torque limit signal output and output timing adjustment (OL signal, Pr.157 )
If the output torque exceeds the torque limit operation level and the torque limit operation is activated, the torque limit
operation signal (OL signal) is turned ON for 100ms or longer. When the output torque drops to the torque limit operation
level or lower, the output signal also turns OFF.
Use Pr.157 OL signal output timer to set whether the OL signal is output immediately or after a preset period of time.
This operation is also performed when the regeneration avoidance function (overvoltage stall) is executed.
For the OL signal, set "3 (positive logic) or 103 (negative logic)" in one of Pr.190 to Pr.192 (output terminal function selection)
to assign the function to the output terminal.
(4) Setting two torque limit levels (Pr.48)
Turning ON the RT signal enables the Pr.48 Second torque limit level.
To input the RT signal, set "3" in any of Pr.178 to Pr.184 (input terminal function selection) to assign the function to a
terminal.
(5) Torque limit level setting (analog variable) from terminal 4 (Pr.148, Pr.149)
Pr.157 Setting Description
0
(initial value)
Output immediately
0.1 to 25 Output after the set time (s) has elapsed
9999 Not output
NOTE
Changing the terminal assignment using Pr.190 to Pr.192 (output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
NOTE
Changing the terminal assignment using Pr.178 to Pr.184 (input terminal function selection) may affect the other functions.
Set parameters after confirming the function of each terminal.
The RT signal is a second function selection signal. The RT signal also enables other second functions.
(Refer to page 141)
Set Pr.22 Torque limit level = "9999".
Input 0 to 20 mA (or 0 to 5 V, 0 to 10 V) to the terminal 4.
Use Pr.267 Terminal 4 input selection and the voltage/
current input switch to select 5 V/10 V. The current input
specification is selected in the initial setting. For how to
change the setting to the voltage input, refer to page 168.
Set the current limit level in Pr.148 Torque limit level at 0mA
input.
Set the current limit level at 20 mA (5 V/10 V) input in
Pr.149 Torque limit level at 20mA input.
REMARKS
When Pr.22="9999" (analog toque limit), the measured value input to the terminal 4 during PID control is not available.
The AU signal is invalid.
Overload state
(OL operation)
OL output signal
Pr.157 Set time(s)
100%
50%
Current limit level (%)
Initial setting
(20mA
(5V/10VDC))
Input current (mA)
(Input voltage (V))
0mA
(0V)
200%
150%
Set the limit level when the input is
20mA (or 10V/5V) (Pr.149).
Set the limit level when the
input is 0mA (or 0V) (Pr.148).