ABB PVI-3.0-TL-OUTD-S-US Product Manual page 43

Alarm - This section of the menu allows programming of the alarm relay function (available
as a normally open contact – N/O, and also as a normally closed contact – N/C). This contact
can be used, for example, to activate a siren or a visual alarm, control the disconnect device of
an external transformer, or control an external device. Maximum ratings of the alarm contact:
240Vac/1A and 30Vdc/0.8A.
The switching of the relay can be set in four different modes:
• PRODUCTION: the relay switches when the inverter connects to the grid.
• ALARM: the relay switches when there is an alarm (code E).
• ALARM (configurable): the relay switches if there are alarms (code E) or warnings (code
W) chosen by the user from a list (the list may also show choices that are not available
for the specific model).
• CREPUSCULAR: the relay switches only when the input voltage exceeds the input
voltage set for connection to the grid.
The operating modes are described in further detail below:
Production: the relay switches when a connection to (or disconnection from) the grid occurs.
When N/O (or N/C) contact is chosen, it will stay open (or closed) until the inverter is connected
to the grid. Once the inverter starts to export power, the relay changes state and closes (or
opens).
When the inverter disconnects from the grid, the relay contact returns to its position of rest,
open (or closed).
Alarm: the relay switches when there is an alarm (Error) on the inverter. No switching occurs
when there is a Warning. When N/O (or N/C) contact is chosen, it will stay open (or closed)
until the inverter reports an error; once an error is reported, the relay switches state and
closes (or opens). The contact remains switched from its rest condition until normal operation
is restored.
Alarm (configurable): the relay switches when there is an alarm (Error or Warning), which
has been selected by the user through the programming menu. If N/O (or N/C) contact
is chosen, it will stay open (or closed) until the inverter reports an error or a warning out of
those selected from the menu. At that point the relay switches state and closes (or opens)
the contact. The relay remains switched from its rest condition until the alarm or warning has
disappeared.
Crepuscular: (meaning - twilight) the relay usually switches when the voltage from the PV
array exceeds/falls below the threshold set for grid connection. If N/O (or N/C) contact is
chosen, it will stay open (or closed) until the inverter has an input voltage higher than the one
selected for grid connection. The contact remains switched from its rest condition for as long
as the inverter is switched ON (even if it is not connected to the grid).
Remote Control ON/OFF - Selecting this function accesses the remote ON/OFF function
used to disable the inverter operation by an external switch or an external controller. Set as
follows:
• Disable: disables the ON/OFF function, so that inverter operation will operate normally,
depending only on grid access and external solar radiation, (default).
• Enable: Activates the ON/OFF function, requiring an external contact closure to activate
the inverter.
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4 - Operations