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3.5. Digital Outputs [-EB1]
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 3-12 and Figure 3-13 .
The digital outputs are not designed for high-voltage isolation applications and they should only be used
with ground-referenced circuits.
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 3-12 . To see an
example of a current sinking output that has diode suppression, refer to Figure 3-13
IMPORTANT : The digital outputs have overload protection. They will resume normal
operation when the overload is removed.
Table 3-16: Digital Output Specifications [-EB1]
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)
Table 3-17: Digital Output Connector Pinout [-EB1]
Pin# Description In/Out/Bi Connector
1 Output Common for Outputs 0-3 N/A
2 Output 0 (Optically-Isolated) Output
3 Output 1 (Optically-Isolated) Output
4 Output 2 (Optically-Isolated) Output
5 Output 3 (Optically-Isolated) Output
6 Output Common for Outputs 4-7 N/A
7 Output 4 (Optically-Isolated) Output
8 Output 5 (Optically-Isolated) Output
9 Output 6 (Optically-Isolated) Output
10 Output 7 (Optically-Isolated) Output
Table 3-18: Mating Connector Part Numbers for the Digital Output Connector [-EB1]
Mating Connector Aerotech P/N Third Party P/N Wire Size: mm
2
[AWG]
10-Pin Terminal Block ECK02395 Phoenix 1700841 0.5 - 0.14 [20-26]
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XC2e Hardware Manual 3.5. Digital Outputs [-EB1]