16
Airwallet PRO310
Installation Guide
III. Circuit Schematic
The circuit schematic is illustrating the no-voltage relay ports
on terminal NC, CO, and NO. Terminal GND is grounded to the
printed circuit board. The DC busy signal terminal is wired to an
optocoupler and can register when the machine is in use. The
AC busy signal terminal (line) is wired to a rectifier and then an
optocoupler registering when the machine is in use if the busy
signal is AC.
The 24V Out terminal can be used to supply the busy signal on a DC
installation. The terminal can also be used to supply a small relay or
similar if necessary.
The ‘24V In’ can be used to supply the device with 24V if AC isn’t
available. The last two terminals in use are ACL and ACN.
The schematic of the Airwallet PRO can be found on page 19.
