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National Instruments Corporation
19
NI UMI-7774/72 User Guide and Specifications
Figure 16.
Example of Wiring a Sinking Output Device to the Fault Input
You can also use a manual operator switch to handle disabling an axis. Refer to Figure 17 and Figure 18
for examples of wiring the fault input signal to high-side and low-side switches.
Figure 17.
Example of Wiring a High-Side Switch to the Fault Input
Current Limiter
NPN
(Sinking)
Output Device
Fault –
Fault +
Viso
Ciso
Vcc
UMI-7774/72
V–
V+
Out
Fault –
Viso
Ciso
Vcc
UMI-7774/72
High-Side
Switch
Current Limiter
Fault +
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