CONFIGURATION
3
6 of 12
Switch position (when button
held 5 seconds)
AC Source and Circuit Type
1
Generator Single Phase (Phase A)
2
Generator Single Phase (Phase A, B)
3
Generator Three Phase (Phase A,B,C)
The following items can be configured on the 3420.
3.1 CONFIGURING CIRCUIT TYPE
Before the AC monitor is ready to use, the type of system you will be monitoring has to be set
up. When turning on the AC monitor for the first time the blue LED will flash quickly to indicate
it’s not set up. The AC Monitor is set up by turning the small rotary switch with a small screw
driver to the required setting and then pressing the button for 5 seconds. Be sure to return the
switch to the correct instance setting afterwards.
Note. You can always change the set up of the AC monitor by pressing the set up button for 5
seconds. If the LED flashes quickly after the setup, it means the value of the rotary switch is
out of range.
Single Phase Connection
