IAI America PCON-CFA - Manual (Page 70)

2. ACON-C/CG,
PCON-C/CG
64
(28) Stopping control mode (SMOD) [PLC output signal] [Dedicated PCON function]
One general characteristic of pulse motors is that their holding current at standstill is greater compared to AC
servo motors. Accordingly, an energy-saving mode is provided to help reduce the power consumption in a
standstill state in applications where the actuator remains stationary for a long period at standby positions.
SMOD = ON: Use the full-servo control mode while standing by
SMOD = OFF: Do not use the full-servo control mode while standing by
x Full-servo
control mode
The pulse motor is servo-controlled to reduce the holding current.
Although the specific level of current reduction varies depending on the actuator model, load condition, etc.,
the holding current generally drops to approx. 1/2 to 1/4.
The actual holding current can be checked on the current monitor screen of the PC software.
(Note) Micro-vibration or noise may generate in conditions where an external force is applied and also
depending on the position at which the actuator is stopped.
Use this mode after confirming that it will not negatively affect any part of the whole system.