User manual

13 PCL-734 User Manual
Chapter 3 Signal Connections
3.3 Isolated Output
Each of isolated digital output channels come equipped with a MOSFET. Every eight
output channels share common emitters and integral suppression diodes for induc-
tive loads. activated by connecting PCOM to VDD. (Channels 0~7 use PCOM1.
Channels 8~15 use PCOM2. Channels 16~23 use PCOM3. Channels 24~31 use
PCOM4.)
If the external voltage (5 to 40V) is connected to each isolated output channel (IDO)
and its isolated digital output turns on (max. of 200 mA per channel), the card's cur-
rent will sink from the external voltage. The current through each E.GND should not
exceed 50 mA.
If the current for all channels combined exceed 150 mA, return the current to the
external voltage through CN2. The following figure shows how to connect an external
output load to the card's isolated outputs.