IGT-30 Series
51
7.3
Wiring of Digital Output
The built-in digital output channels on IGT-30D and IGT-31D is designed with
MOSFET SPST-NO relays. SPST-NO stands for single pole single throw and
normally open. It works like dry contact mechanical relays. Turning the digital output
channels on will “close” the circuit (polarity does not matter). The driving power
source can be a DC power source as well as an AC one. The following figure shows
how the load and external power sources are wired.
