I'm pretty sure it was mentioned in another thread that similar faults would not cause Midnite AIO paralleled inverters to fault out. I'm not familiar with their protocol used for paralleling, but if it is true, that would be far superior.
At a minimum, I would think Sol-Ark inverters with CANBus could just cause inverters further down the daisy chain to fault, leaving the master and higher level slaves to continue. I don't see how that would put at risk "safeguarding the customer’s investment."
Jason Szumlanski
Principal Solar Designer | Florida Solar Design Group
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956
NABCEP Certified Solar Professional (PVIP)
Florida State Certified Solar Contractor CVC56956
Florida Certified Electrical Contractor EC13013208
On Thu, Nov 14, 2024 at 9:38 AM Christopher Warfel via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:
______________________________Can you point to a reference to what stage 0 is? This is a new term for me. So far, have not installed multiple Sol-Ark inverters at one site. Thank you, Chris
On 11/12/2024 12:50 PM, Poole, Jharen via RE-wrenches wrote:
Our inverters utilize CANbus communications for establishing parallel operation between multiple Sol-Ark inverters. CANbus communication operates as a serial communication protocol. In this setup each inverter in the setup is linked via a parallel communication cable forming a daisy-chain configuration. If one inverter in the chain experiences a shutdown due to a fault, the communication chain is disrupted. Consequently, the other inverters will also power down when we see this loss, ensuring system protection and safeguarding the customer’s investment.
Paralleling must be done at a stage 0 they have to sync and that is done in the pre normal mode, functionality wise having them going into sync is extremely difficult due to timing issues. It's easier to time it from a stage 0 than to do it when one unit is already running.
Maintaining synchronization between inverters is critical; if the inverters were to operate out of parallel it can result in conflicts between the operation of inverters and desynchronization of the units. This misalignment can escalate, potentially causing significant damage to one or more inverters and risking harm to other connected equipment.
Best Regards,
Jharen Poole
Applications Engineer II
972-575-8875
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