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Selectronic Australia
Rev 41 - Dec 2022
Operation
Generator Controls for Off-Grid
The SP PRO may be configured to automatically control a generator in an Off-Grid power system. The
generator control is standard with all SP PRO models.
The SP PRO may be configured to automatically run the generator during periods of insufficient renewable
energy production to:
•
Limit the depth of battery discharge, for maximum battery life.
•
Deliver energy efficiently by supplying sustained large site Loads direct from the generator.
•
Load the generator to the highest possible level while running, to efficiently convert fuel to electricity.
•
Limit generator starting frequency and run time, for increased life and reduced maintenance.
•
Avoid noise late at night by only starting the generator for heavy site Loads or a deeply discharged
battery.
For full details on backup generator controls please see
TN0025 – SP PRO Genarator Controller Wiring Guide
The SP PRO may be configured to automatically control a backup generator in a Solar Hybrid
power system using the optional Grid Fail / Generator backup module. During a grid outage the
generator will be automatically started by the SP PRO as required to supply the Load and
charge the battery bank.
As part of the installation, the SP PRO settings are configured to automatically run the generator during a grid
outage to:
•
Limit the depth of battery discharge, for maximum battery life.
•
Deliver energy efficiently by supplying sustained large site loads direct from the generator.
•
Load the generator to the highest possible level while running, to efficiently convert fuel to electricity.
•
Limit generator starting frequency and run time for increased life and reduced maintenance.
•
Avoid noise late at night by only starting the generator with heavy site Loads or a deeply discharged
battery.
For full details on backup generator controls please see the documentation supplied with the optional Grid
Fail / Generator Backup option.
Inverter External Alarm
The SP PRO provides an alarm output which can be wired to an external alarm buzzer or light. A shutdown
alarm is indicated by a continuous ON condition. The SP PRO is in alarm state when shut down or idle. The
alarm relay is active in the normal or no alarm state condition (i.e. use the Normally closed (NC) relay contacts
to run an alarm buzzer or indicator). Alert conditions can be prevented from raising the alarm, via SP LINK.
SP PRO Operation