IAI America SCON-C - Manual (Page 171)

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3.1.4 Torque-limiting Selection Signal (TL)
This signal limits the motor torque.
Function
The actuator thrust (motor torque) can be limited by the torque set in parameter No. 57, “Torque-limiting value”
while this signal is ON.
While the TL signal is ON, the TLR (torque limiting) output signal will turn ON once the torque limit is reached.
The TL signal is disabled during home return and while the actuator is forcibly stopped.
Caution:
 Do not turn OFF the TL signal while the TLR signal is ON.
 An excessive deviation (accumulated pulses) may generate while torque is being limited (the TL
signal is ON) (for example, the actuator may receive a load just like it receives a push force in push
& hold operation and therefore become no longer operable). If the TL signal is turned OFF in this
condition, actuator control will start at the maximum torque the moment the signal changes, thus
causing the actuator to move suddenly or run uncontrollably. After the TL signal has turned ON
(upon completion of push & hold operation, etc.), always move the actuator in the opposite direction
and confirm that the TLR signal turns OFF. If moving the actuator in the opposite direction is
difficult, turn off the servo.
 Related parameter
The TL signal can be disabled using parameter No. 61.
If the TL signal is not used, disabled the signal.
3.1.5 Forced Stop Signal (CSTP)
This signal is used to forcibly stop the actuator.
Function
Input the CSTP signal continuously for 10 ms or longer. When the CSTP signal is accepted, the actuator will
decelerate at the emergency stop torque and then the servo will turn OFF. At this time, the function (dynamic
brake, electromagnetic brake or deviation counter clearing) set by the actuator parameter for forced stop input
(0: Enable/1: Disable) will be implemented.
For the servo-off status and relevant processing, refer to 3.1.1, “Servo-on Signal (SON).”
 Related parameter
The forced stop signal (CSTP) can be disabled using parameter No. 67.