

Building the Safety Hardware Underneath Robots with Weihan Wang
Weihan Wang, Director at NexCOBOT, a NEXCOM International company, joins Erik Reynolds to talk about the hardware underneath robot safety. Weihan leads business development, product development, and functional safety for the robotics division and is the safety manager for the SCB 100. They cover how a motion controller, a PLC, and a safety controller differ, and what makes a safety rated PC a different product from a regular one. Weihan shares how NexCOBOT spent 4 years taking the SCB 100 through SIL 2 and PL d Category 3 certification. He also explains why force monitoring pushes robot makers away from safety PLCs and toward C and C++ on a PC platform, and how customers run redundant safety applications on 2 cores inside a single chip. The conversation then turns to humanoids, quadrupeds, and ISO 25785, which the ISO working group expects to publish around 2028. Weihan also describes the safety platform NexCOBOT is building on NVIDIA IGX Thor, where a safety island monitors the AI inference and a separate safety MCU serves as the backup. R&M and NexCOBOT are sharing a booth at NVIDIA GTC Berlin on October 20–22. Stop by to meet both teams. More on NexCOBOT: https://www.nexcobot.com/ Check out our work: https://reynolds-moore.com/











