User manual

9 Functions and operations in the position control mode
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Digital setting
• When the analog input signal parameter [SyS-1-05] is set to “Enable”
1.
Set the system parameter for analog input signals [SyS-1-05] to “Enable.”
Note
When a system parameter has been changed, the new parameter will become
effective after the power is cycled. If a 24 VDC power supply is used, also cycle the
24 VDC power supply.
2.
Use the OPX-2A or MEXE02 to set one of operation data Nos. 1 to 3 as the torque limit value.
3.
Select one of operation data Nos. 1 to 3 based on a combination of ON/OFF statuses of M0
and M1 inputs.
• When the analog input signal parameter [SyS-1-05] is set to “Disable”
1.
Set the system parameter for analog input signals [SyS-1-05] to “Disable.”
Note
When a system parameter has been changed, the new parameter will become
effective after the power is cycled. If a 24 VDC power supply is used, also cycle the
24 VDC power supply.
2.
Use the OPX-2A or MEXE02 to set one of operation data Nos. 0 to 3 as the torque limit value.
3.
Select one of operation data Nos. 0 to 3 based on a combination of ON/OFF statuses of M0
and M1 inputs.
Step 2 Limiting the torque
Turning the TL input ON while positioning operation is in progress will limit the maximum output torque by
the torque limit value you have set.
10 ms or less10 ms or less10 ms or less
2 ms or less∗2 ms or less ∗2 ms or less
TL input
ON
OFF
M0 to M1 input
ON
OFF
TLC output
Torque limit
Detected torque
ON
OFF
Torque
300%
0%
∗ The specific time varies depending on the load condition and gain.
Note
If the TL input is turned ON when the torque limit value is set to 0%, the motor will lose its
holding torque. Even if a pulse is input in this condition, the motor will not operate, but the
command position will still be refreshed. Turning the TL input OFF in this condition will
disable the torque limit function and the motor may move to the command position at the
maximum torque. Exercise caution when no external potentiometer or external DC voltage
is connected or when the digital torque setting is 0%.
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Enabling the torque limit function: TL input
When the TL input is turned ON, the torque limit function will be enabled and the maximum output torque of
the motor will be adjusted to the specified torque limit value.
While the TL input is OFF, the torque limit function is disabled and the maximum output torque of the motor
remains 300% (the rated torque corresponds to 100%).
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Notifying that the torque is being limited: TLC output
When the specified torque limit value is reached, the TLC output will turn ON.