Slow getting to 110C bed target on 10" i3v

[JimG]

For anyone wondering, the Omron G8QN relay used on the MakerFarm heat bed relay is rated for 30 amps.

According to the spec sheet for the Omron G8QN, the electrical contacts are rated for at least 100,000 operations. Assuming around a 5 second time base for the PID routine*, then the relay would be good for at least around 70 hours of operation. I guess I should have a plan for replacing mine at some point ;-)

Seems like a power MOSFET that uses the bed as a heat sink might be worth exploring?

Jim

* This was not immediately obvious to me in the Marlin code. Does anyone know what the default value is, and where the code is located?