IAI America SCON-C - Manual (Page 87)

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 Servo ON (SON)
The servo remains ON while this signal is ON.
Use this signal based on the default setting (the factory setting is “0: Enable”) if servo ON/OFF control must be
performed by the PLC as part of the operation of the safety circuit covering the entire system.
Whether this signal is enabled or disabled is defined by parameter No. 21, “Servo ON input.” If the SON signal is
used, set this parameter to “0: [Enable].” If it is not used, set the parameter to “1: [Disable].”
(Note) If the SON signal is turned OFF during movement in case of error, the actuator will decelerate to a stop
at the emergency-stop torque and then the servo will turn OFF.
At this time, the function selected by a parameter (dynamic brake, electromagnetic brake, or deviation counter
clear) is performed.
 Operation mode (MODE)
This signal is enabled when parameter No. 25, “PIO pattern selection” is set to [1] (when the teaching mode
[teaching type] is selected).
When this signal is turned ON, the normal operation mode will switch to the teaching mode.
(Note) For the controller to switch modes, all of the JOG+, JOG-, PWRT and CSTR signals must be OFF and
the actuator must be stopped (except when the actuator is pushing the load).
Once the modes have been switched, the MODES output signal turns ON.
The PLC should be programmed in such a way that it will confirm that the MODES output signal is ON
before accepting any PWRT operation command.
To switch the controller back to the normal operation mode, turn this signal OFF.
The PLC should be programmed in such a way that it will confirm that the MODES output signal is OFF
before accepting any operation command in the normal operation mode.
(Note) The controller will not return to the normal operation mode unless the PWRT input signal is OFF.
 Jog/inching switching signal (JISL)
When the jog/inching switching signal (JISL) is OFF, the functions of the JOG+ and JOG- signals are switched to
those pertaining to jog operation. When the JISL signal is ON, the functions of the above signals are switched to
those relating to inching operation.
If the JISL signal is turned ON (switched to inching) while the actuator is jogging, the actuator will decelerate to a
stop and enter the inching mode.
When the JISL signal is turned OFF (switched to jogging) while the actuator is inching, the actuator will complete
the movement and then enter the jogging mode.
Dynamic brake
Electromagnetic
brake
Lock
Release
Lock
Release