IAI America SSPA - Manual (Page 66)

10. Options
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10.7 Master Axis/Slave Axis Specification for Synchronized Operation
If the “synchronized operation function” is used, where two actuator axes are operated with the XSEL controller or
SSEL controller, one axis is designated as the master axis, while the other axis is designated as the slave axis.
The actuators serving as the master axis and slave axis must be of the same specification.
The master axis comes with the home limit switch, represented by the option model number “LM.”
The standard installation position of the home limit switch and cover is on the right side of the actuator as viewed
from the motor. If you want to have the limit switch on the right side, specify the option model number “LLM.”
Controller
Y-axis
X-axis
Master axis (LM)
Slave axis (S)