©
National Instruments Corporation
11
nuDrive Accessory User Guide
Figure 7.
Shielded Twisted Pairs
Note
If you use an unshielded cable, noise can corrupt the encoder signals, resulting in
lost counts, reduced accuracy, and other erroneous encoder and controller operation.
Limit Switch Terminal Blocks
The limit and home switch connections for the nuDrive axes are configured
differently on different nuDrives, as described in the following sections.
CX and SX nuDrive Configuration
For end-of-travel limit and home switch connections, nuDrive axes have a
separate, six-position removable screw terminal connector block. All limit
signals are filtered in the nuDrive and debounced by the motion controller
to reduce noise sensitivity. Refer to Figures 8 and 9 for examples of passive
and active limit switch wiring using the terminal block pin assignments on
the CX and SX nuDrives.
Figure 8.
Pin Assignment for the Passive Limit Switch Terminal Block on the
CX and SX nuDrives
Shield
+5 V
Common
Index
Index
B
B
A
Drain
A
1
2
3
4
5
6
CW Limit
Home Switch
+12 VDC
Common
CCW Limit
+5 VDC
Summary of Contents for nuDrive 2CF-001
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