The first step of creating a Tigo TS4 system with module-level monitoring is understanding the various components and their unique features.
NOTE: For systems using TS4-A-O/-S/-M modules, a TAP connected to a CCA with Internet service is required for both system monitoring and warranty eligibility.
A complete Tigo TS4-A-O/-S/-M system requires these three components:
TS4 MLPE (module level power electronics)
TS4s are connected to a PV Module and offer various models, with different functionalities. See details at: https://www.tigoenergy.com/products
Tigo Access Point (TAP)
TAP units are a gateway radio transceiver that wirelessly communicates with the TS4 units by reporting data to the cloud, via connection with the CCA (below), and relaying the Rapid Shut Down (RSD) command.
Cloud Connect Advanced (CCA)
The CCA reports module-level power production and issues the Rapid Shutdown (RSD) command. Setup is completed via the Tigo Energy Intelligence (EI) App (available for iOS or Android) and internet connection (Wi-Fi or Ethernet) is required to view data on the Tigo Monitoring Portal (website), and for Warranty eligibility/coverage.
Rapid Shut Down (RSD)
Rapid Shutdown (RSD), is an NEC requirement for any structure-mounted system (ground-mount systems are not subject to RSD compliance).
Tigo's Monitoring products require the installation of a Data Logger (CCA) and wired transceiver (TAP). When the system is powered on, the TAP will broadcast a signal to the assigned TS4 units on the system. This broadcast is sometimes referred to as a "keep-alive signal," as the units will only pass voltage when the signal is active.
When the CCA is powered off, this keep-alive signal is no longer present and the entire DC-side of the system goes into a RSD response: The Tigo MLPEs disconnect their PV-Modules from the string and the accumulated string voltage is reduced to: under 80V within 30 seconds (as per NEC requirements).
Important: Tigo's TS4 Fire Safety and Monitoring products both offer RSD compliance, but they use different technologies to deliver the signal. For this reason, they are not inter-mixable within single systems or arrays. (must be installed, independently).
Basic system design:
If you are ready to create a Bill Of Materials for your project, or pricing/quoting purposes:
Click here for the Tigo product selection tool
If you are ready to proceed with your design, note the following:
- Confirm availability of AC grid (120/220 VAC) power and Internet access at the site
- Check the TS4 cable length required for PV Modules (especially, if in landscape orientation)
1.2m length is offered for 72 cell modules (landscape orientation),
- Confirm PV Module connector type - Tigo TS4 products are manufactured with Staubli MC4
- String fuse Maximum of 15 Amps (when 3 or more strings are connected to 1 MPPT)
More design-related content is available here: TS4 Design Articles
ATTENTION! The Tigo Monitoring Group is covered in detail in the Tigo TS4 Design &Installation Certification Course. All Tigo Installers and Designers are highly encouraged to take this course.