Digital Outputs; Table 2-20: Digital Output Specifications; Table 2-21: Digital Output Pins On The Digital/Analog I/O A Connector - Aerotech Automation1 XL4s Hardware Manual

XL4s Hardware Manual

2.6.1. 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 the same configuration. Refer to
Figure 2-7 and Figure 2-8.
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
current sinking output that has diode suppression, refer to
The digital outputs are not designed for high-voltage isolation applications and they should only be used with
ground-referenced circuits.
NOTE: The digital outputs have overload protection. They will resume normal operation when the overload
is removed.
Table 2-20: Digital Output Specifications
Digital Output Specifications
Maximum Voltage
Maximum Sink/Source Current
Output Saturation Voltage
Output Resistance
Rise / Fall Time
Reset State
Table 2-21: Digital Output Pins on the Digital/Analog I/O A Connector
Pin # Label Description
1 DO0 Digital Output 0 (Optically-Isolated)
2 DO1 Digital Output 1 (Optically-Isolated)
3 DO2 Digital Output 2 (Optically-Isolated)
4 DO3 Digital Output 3 (Optically-Isolated)
5 DOC Digital Output Common
www.aerotech.com
Chapter 2: Installation and Configuration
Figure
Figure 2-8
0.2 V at maximum current
250 µs (2K pull up to 24V)
Output Off (High Impedance State)
2-7. To see an example of a
Value
24 V (26 V Maximum)
50 mA/output
4 Ω
In/Out/Bi
Output
Output
Output
Output
Input
35