11 - Homing types
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11.5
Type 7, 8, 9, 10, 11, 12, 13, 14: homing on the Home Switch and Index Pulse (resolver zero)
The initial direction of movement is clockwise for types 7 to 10 and anticlockwise for types 11 to 14, except
when the Home Switch is high at the beginning of movement. These types of homing procedures use the
home switch, which is at a high logic level only for a portion of the excursion. In this case, the initial direction
of movement depends on the desired change in state of the home switch. The reference (home) position is
on the index pulse (resolver zero) to the left or right of the ascending or descending change in state of the
home switch. If the initial direction does not meet the home switch, the direction is reversed toward the limit
switch.
Figure 25
8
7
7
8
7
8
9
10
9
9
10
Index Pulse
Home Switch
Cw Limit Switch
w
10
