Aerotech Automation1 iXR3, Hardware Manual

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2.6. DOUT Connector (Digital Outputs)
Optically-isolated solid-state relays drive the digital outputs. You can connect the digital outputs in
current sourcing or current sinking mode but you must connect all four outputs in a port in the same
configuration. Refer to
Figure 2-34 and Figure 2-35 .
You must install suppression diodes on digital outputs that drive relays or other inductive devices. To
see an example of a current sourcing output that has diode suppression, refer to
Figure 2-34 . To see
an example of a current sinking output that has diode suppression, refer to Figure 2-35 .
The digital outputs are not designed for high-voltage isolation applications and they should only be
used with ground-referenced circuits.
IMPORTANT : The digital outputs have overload protection. They will resume normal
operation when the overload is removed.
Table 2-31: Digital Output Specifications
Digital Output Specifications Value
Maximum Voltage 24 V (26 V Maximum)
Maximum Sink/Source Current 250 mA/output
Output Saturation Voltage 0.9 V at maximum current
Output Resistance 3.7 Ω
Rise / Fall Time 250 µs (2K pull up to 24V)
Reset State Output Off (High Impedance State)
2.6. DOUT Connector (Digital Outputs) iXR3/XR3 Hardware Manual
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