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Appendix B
Additional Origin Search Patterns
250
Reverse-mode Origin Searches 12
These origin searches are performed with an origin proximity switch and the initial search direction set to CW.
Limit switches
Origin proximity
switch
Z-phase signal
Speed
Error (No origin proximity signal)
Error (No origin proximity signal)
Error (No origin proximity signal)
Error (No origin proximity signal)
CCW
CW
The following error can occur if the CCW limit switch is ON for a short time and the CCW limit switch signal is close
to the origin proximity signal.
Limit switches
Origin proximity
switch
Z-phase signal
Speed
Error (Overtravel reverse error)
CCW
CW
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