Contrex M-Traverse Manual de usuario Pagina 73

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The polarity type and direction are determined by the following Control Parameters:
Home Sync Polarity (CP-35)
The Home Sync Polarity (CP-35) parameter allows you to choose
between rising edge polarity (positive going signal) or falling edge
polarity (negative going signal) during "Home Seek". This feature is
extremely useful when you use reflective or transmissive optical
sensors for the Home sensor. Enter "1" in CP-35 for a rising edge, or
"2" for a falling edge. Refer to the diagram below.
Rising Edge
Falling Edge
+ Vdc
+ Vdc
0 Vdc
0 Vdc
/
/
Forward/Reverse Limit Polarity (CP-36)
The Forward/Reverse Polarity Limit (CP-36) parameter allows you to
choose between rising edge polarity (positive going signal) or falling
edge polarity (negative going signal) so that the Follower mechanism
will not travel beyond the traverse length limit. This feature is ex-
tremely useful when you use reflective or transmissive optical sensors
for the Home sensor. Enter "1" in CP-35 for a rising edge, or "2" for a
falling edge.
The factory default for the Polarity Control Parameters are found in Table 3-18. To
modify the default parameters refer to Table 3-19. If you are uncertain how to enter a
Control Parameter, review the
Operations: Keypad
section.
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