Enerdrive ePRO Inverter / Charger Owners Manual
Page 24
The ePRO Combi will mostly recover from an error mode automatically
when the cause of the error has been resolved. However, when an error
has occurred due to a high battery ripple voltage or an AC transfer
switch over-current, the ePRO Combi needs to be switched o
ff
and
on again manually (manual restart). The ePRO Combi also needs to be
restarted manually, when too many battery or overload errors have
occurred within a short period of time.
4.3 Programmable Alarm Relay
The ePRO Combi is equipped with one or two (depending on model)
programmable potential free alarm relays. Standard, this relay (or relay
1 on EPC 2000-12 to 3500-24 models) will be activated when the unit
shuts down and jumps to an error mode. The alarm relay de-activates
again when the error has been resolved and the ePRO Combi is running
in normal operating mode again.
Relay 2 on the EPC 2000-12 to 3500-24 models will be activated only
after the AC supply has become available. In case of battery operation,
Relay 2 will deactivate immediately. This can be used to switch less
critical AC loads (i.e. electric boiler, aircon) on and o
ff
that are allowed
to be supplied by the mains or generator only.
Using ePRO Dashboard, it is also possible to con
fi
gure the programmable
relays to perform a di
ff
erent task, like starting a generator when the
battery voltage has reached a certain low voltage level.
Both normally closed and normally open contacts of these relays are
available. For the EPC 1600 to 1800 models, the maximum relay contact
ratings are 30Vdc/1A or 60Vdc/0.3A. For the EPC 2000 to 3500 models,
the maximum relay contact ratings are 30Vdc/16A or 250Vac/16A.
4.4 Trigger Input
The trigger input o
ff
ers a way of externally controlling the behaviour
of the ePRO Combi. The trigger input can be connected to an external
