User manual

27 Chapter 3
3.3.2 Isolated Digital Outputs
Each of the 16 isolated digital output channels comes equipped with a
darlington transistor. Every eight ouput channels share common
emitters and integral suppression diodes for inductive load, actived by
connecting PCOM to VDD. (Channels 0~7 use PCOM1. Channels
8~15 use PCOM2)
If the external voltage (5~40 V) is connected to each isolated output
channel (IDO) and its isolated digital output turns on (90 mA per
channel maximum), the card's current will sink from the external
voltage.
Figure 3.5: Isolated Digital Output Connection