NI SMD-7613/7614/7615/7616 User Manual
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© National Instruments
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23
Programmable Outputs
The drive features four digital outputs. These outputs are present for future feature expansion,
as SoftMotion does not currently set the state of the digital outputs on the drive. Refer to the
diagram below for a representation of the internal cirtcuitry of the digital outputs:
Figure 29.
Internal circuitry of the digital outputs
The outputs can be used to drive LEDs, relays, and the inputs of other electronic devices like
controllers and counters. For Y4, the “+” (collector) and “-” (emitter) terminals of each
transistor are available at the connector. This allows you to configure this output for current
sourcing or sinking. The Y1 to 3 outputs can only sink current. The Y COM terminal must be
tied to power supply (-).
Diagrams of each type of connection follow.
Caution
Do not connect outputs to more than 30 VDC.
Caution
The current through an output terminal must not exceed 100 mA.
Figure 30.
Sinking Output Using Y1, Y2, or Y3
Y1
YCOM
Y
3
Y2
Y4+
Y4–
14
17
16
15
20
21
5-24 VDC
Power
Su
pply
–
+
YCOM
Y1/2/
3
Lo
a
d
IN/OUT1
