Output signals, 2 output signals – IAI America SCON-C User Manual
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3.2 Output
Signals
3.2.1
System Ready Signal (PWR)
After the main power has been input, this signal will turn ON once the SCON enters a ready state.
Function
The signal will turn ON once the SCON enters a ready state after the main power has been input and the
controller has been initialized successfully, regardless of the servo status or whether an alarm is present, etc.
Even if an alarm is present, this signal is ON as long as the SCON is ready.
This signal is synchronized with the illumination of the PWR LED (green) on the front face of the controller.
3.2.2 Servo-on
Status Signal (SV)
This signal is output when the servo is ON.
Function
When the SON (servo-on) signal turns ON, the servo will turn on and the controller will become ready (pulse-
train inputs can be accepted) (pulse-train inputs can be accepted = pulse mode). The SV signal turns ON in this
condition.
It will turn OFF when the servo is turned off due to a SON signal OFF.
This signal is synchronized with the illumination of the SV LED (green) on the front face of the controller.
3.2.3
Position Complete Signal (INP)
This signal will turn ON when the deviation (accumulated pulses) on the deviation counter enters the in-
positioning band, and remain ON while the deviation is inside this range.
Function
When the servo is ON, this signal turns ON when the accumulated pulses on the deviation counter are within the
number of pulses set in parameter No. 10, “Default positioning band.”
This signal is OFF while the servo is off.
Caution:
This signal will turn ON when the servo turns on (because positioning is executed at the current
position where the servo turns on).
Since this signal turns ON only based on the deviation (accumulated pulses), setting an excessively
large value in the position control parameter for the positioning band will cause the signal to turn
ON while the actuator is still operating at slow speed (i.e., positioning is not yet completed) as long
as the current actuator position is inside the in-position band.