IAI America SCON-C - Manual (Page 112)

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2.3 Power-saving Modes at Standby Positions
To save energy when the actuator stands by for a long period of time, this controller provides a mode in which to
reduce the power consumption while the actuator is at standstill.
Use this mode after confirming that it will not present problems to any part of your system.
The actuator stands by after completing the home return operation effected by the HOME input signal
In this condition, you can select the power-saving mode using parameter No. 53 (Default standstill mode).
(This setting is not affected by the value in the “Standstill mode” field of the position table.)
The actuator stands by after completing the positioning to the target position set in the “Position” field for the
applicable position number
In this condition, you can select the power-saving mode based on the value in the “Standstill mode” field of the
position table.
(This setting is not affected by the value of parameter No. 53.)
Meanings of values set in the “Standstill mode” field of the position table and in parameter No. 53
Setting
All power-saving modes are disabled. (The actuator is completely stopped.) 0
Automatic servo-off mode. The delay time is defined by parameter No. 36. 1
Automatic servo-off mode. The delay time is defined by parameter No. 37. 2
Automatic servo-off mode. The delay time is defined by parameter No. 38. 3
 Automatic servo-off mode
After positioning is completed, the servo will turn off automatically upon elapse of a specified time.
(Since no holding current flows, power consumption will decrease.)
When the next movement command is received from the PLC, the servo will turn on and the actuator will start
moving.
* Since the servo turns off once, some position deviation may occur. Do not use this function at standby
positions where position deviation will cause problem.
(Note) The automatic servo-off function is disabled in the MANU teaching mode.
Movement
command
Servo status
Actuator
movement
Servo on
Automatic servo-off mode
(The SV LED blinks.)
Target position
T: Delay time (seconds) after positioning is
completed until the servo turns off
Position complete signal
(parameter No. 39 = 0)
Position complete signal
(parameter No. 39 = 1)