Aerotech Ensemble LAB, Руководство по оборудованию

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Ensemble LAB Hardware Manual Installation and Configuration
2.3.4. End of Travel Limit Input Interface
End of Travel (EOT) limits are required to define the end of the physical travel on linear axes. Positive or
clockwise motion is stopped by the clockwise (CW) end of travel limit input. Negative or counterclockwise
motion is stopped by the counterclockwise (CCW) end of travel limit input. The Home Limit switch can be
parameter configured for use during the home cycle, however, the CW or CCW EOT limit is typically used
instead. All of the end-of-travel limit inputs accept 5-24 VDC level signals. Limit directions are relative to the
encoder polarity in the diagnostics display (refer to
Figure 2-12 ).
The active state of the EOT limits is software selectable (by the EndOfTravelLimitSetup axis parameter).
7
6
Normally closed shown (typical).
19
17
CCW
Limit Com
CW
+5V
1
13
14
25
Figure 2-10: End of Travel Limit Input Connections
Table 2-10: End of Travel Interface Pin Assignment
Pin# Description In/Out/Bi
7 Negative (CCW) hardware limit Input
17 Encoder/5 V Output
19 Positive (CW) hardware limit Input
74LVC245
10K
10K
1
0
K
1
0
K
.0
1
.0
1
PIN-19
PIN-7
+3.3V
+5V
CCW
CW
Figure 2-11: End of Travel Interface Inputs
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