Alpha Technologies Cordex Controller Ver.3.1x - Manual (Page 50)

0700015-J0 Rev B 48
6.4.7 Auto DC Priority
The inverters can be configured to switch to DC Priority mode when a custom alarm is tripped. The alarm
can be triggered by a digital input such as a signal from an alternative energy source – a fuel cell per-
haps that has just switched on.
When the custom alarm activates, the CXC automatically switches the inverters to draw from DC power
as much as possible. When the alarm is deactivated, the command is sent to return to AC Priority. (Cus-
tom alarms are configured from Alarms-> Configure Alarms .)
Figure 47 — Inverters – Auto DC Priority
Figure 48 — Inverters – Auto DC Priority
If the inverters are in DC Priority with the alarm still active, disabling Auto DC Priority does not cause the
inverters to revert to AC. (In addition, this action blocks the alarm input so the inverters will never auto-
matically revert to AC.)
The correct approach is to switch the
Input Source manually to AC in Inverters > General Settings . The
manual setting overrides the Auto DC Priority setting.