Home Switches
The
SCORBOT-ER IX
uses an optical home switch on each axis to identify the
fixed reference, or home, position.
The home switch is mounted on the same disk as the end of travel switches, and a
“ flag” is attached to the Harmonic Drive output shaft, as shown in Figure 7-8.
During the homing procedure, the robot joints are moved, one at a time. Each axis
is moved until the flag cuts the beam of light. When that occurs, the optical
detector on each joint sends a specific signal to the controller.
Once the home switch location has been detected, the axis motor continues to
rotate until its encoder produces an index pulse. The point at which that occurs is
the axis home position.
LIMIT
SWITCH
DISK
HARMONIC DRIVE
LIMIT
SWITCH
AXIS NOT AT HOME
AXIS AT HOME
OPTICAL
HOME
OPTICAL
HOME
FLAG
FLAG
Figure 7-8: Home Switch Activation
SCORBOT-ER IX
7 - 6
User’s Manual
9603
Содержание SCORBOT-ER 9
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