6
Installation and Safety Manual
Trinasmart
TRINASMART’S PV-SAFE FEATURE
When preparing for an installation, check the front panel of the Trinasmart Management Unit (MMU) for the PV-Safe logo.
This is an indicator that the system is equipped with the advanced safety feature.
By pressing the PV-Safe button on the Management Unit or activating the
feature from the web-based console, the Trinasmart Module Optimizers will
attempt to stop voltage from passing to the PV wiring between the Module
Optimizer and the inverter.
Trinasmart PV-Safe depends on the presence of the Management Unit for
successful operation.
IF THE MANAGEMENT UNIT DOES NOT HAVE ACCESS TO AC POWER OR IS
OTHERWISE IMPAIRED, THE PV-SAFE FUNCTION CANNOT BE INITIATED FROM
THE PV-SAFE BUTTON ON THE MANAGEMENT UNIT.
A system configured with the Trinasmart Optimizer solution will attempt to
enter the PV-SAFE mode automatically when the MMU is not visible to the
Optimizers (except when the AC is disconnected at the building main breaker).
Once PV-Safe is activated, always seek active feedback that the modules are disabled by confirming on the Management
Unit display or on the summary page of the web-based software tool; or by testing the DC lines with a voltmeter. When
the PV-Safe button is activated, the MMU will display “PVSAFE PRESSED” and “Requesting ...” to indicate the command has
been sent to the Optimizers.
As the Optimizers are responding, the MMU display will indicate how many have successfully disconnected (ex.“Resp:
15/48”).
Once the system successfully receives acknowledgement from all of the Module Optimizers in the array, the MMU will
display “RESPONDING”. Should the MMU not receive proper response from one or more of the Module Optimizers or
communication has been lost, the display will read “NOT RESPONDING”. If the “NOT RESPONDING” message is present, the
owner or installer must assume that the system is still active and voltage is present as in a standard PV array.
While PV-Safe is meant to enhance system safety, care should always be exercised to avoid high voltage DC wiring
regardless of whether the PV-Safe function is enabled. Trina Solar cannot guarantee complete deactivation of the array
when the PV-Safe button is pressed. Trinasmart PV-Safe must be tested as part of the installation process, and should be
routinely re-tested on an annual basis.
For Trinasmart support, please contact our partner Tigo Energy:
(USA) 1.888.609.8446
(outside the US) +1.408.402.0802
skype: support.tigoenergy
•
Plan for Internet connectivity near the location of the Trinasmart Management Unit and purchase Ethernet cable of
appropriate length.
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Confirm that the PV module open circuit voltage (Voc) rating does not exceed the Trinasmart Optimizer’s maximum
input voltage specification.
