Chapter 4
Signal Connections
4-16
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Refer to the
Connecting Inputs to the PCI-7390
information about connecting general-purpose inputs.
General-Purpose Outputs
The PCI-7390 provides eight optically isolated sinking or sourcing
general-purpose outputs. Jumpers on the board provide the capability to
select between sinking or sourcing per output. Refer to the
Sinking or Sourcing General-Purpose Outputs
section for information
about configuring the jumpers.
•
Axis <1..4> Inhibit-Out
—Axis <1..4> General-Purpose Output 1 on
each axis is configured by default in software as Axis <1..4>
Inhibit-Out. Inhibit output signals can be used to control the
enable/inhibit (Servo ON) function of a p-command drive.
When configured, inhibit output signals are activated automatically
upon a shutdown (emergency stop) condition, a Kill Motion command,
or any motion error that causes a kill motion condition, such as
exceeding the following error limit.
•
Axis <1..4> Alarm Clear
—Alarm clear outputs are used to clear the
alarm or fault outputs on a p-command drive.
General-Purpose Output Circuit
Figure 4-11 shows the simplified schematic diagram of the
general-purpose output circuit. Jumpers on the board provide the ability to
choose between a sinking driver or a sourcing driver for each output.
The output voltage on the general-purpose outputs depends on the
General-Purpose Output Supply input which can range from 5 V to 30 V.
The General-Purpose Output Supply is used as the reference voltage for the
general purpose outputs. When the a general-purpose output jumper is
configured for sourcing the output switches to the voltage supplied on the
General-Purpose Output Supply when it is turned on. This supply is used
for all eight general-purpose outputs. This supply can be connected to the
+24 V IN supply if you are connecting to +24 V devices.
Note
You must connect the General-Purpose Output Supply for proper operation of the
general-purpose outputs in both sinking and sourcing mode.
