Communication Signal for Rapid Shutdown SunSpec Interoperability Specification – SunSpec Alliance

August 27, 2019

Revision: 36
Date: August 27, 2019

Abstract. This document defines a multi-vendor, multi-device (e.g. inverter, module, string combiner) communication interoperability specification to support NEC 2014, NEC 2017 and UL 1741 module-level rapid shutdown requirements. The intended audience for this document includes hardware and software designers as well as implementers of communication systems

Update to Version 36. Addresses applications of the receiver in devices that are not PV modules and to reference the UL 3741 standard.

Note: Click here for statement on SunSpec Rapid Shutdown IP status.

Download Functional Specification

You might also like

May 7, 2025

Webinar Recap – Accelerating 2030.5 & 1547 Certification – How QualityLogic is Advancing Interoperability and Conformance

  SunSpec Alliance recently hosted an insightful technical webinar featuring QualityLogic, the official SunSpec Test Software Provider, who shared their

April 28, 2025

SunSpec Alliance at the SF Climate Week Hackathon

What happens when open-source innovation meets clean energy collaboration? A lot of bright ideas. SunSpec Alliance had a blast supporting

April 21, 2025

Webinar Recap – Unlocking Grid Flexibility: Updates on Flexible Service Connection & 2030.5 CSIP

This SunSpec Alliance webinar brought together leading experts to explore how flexible service connections are unlocking new grid capacity and