HVAC VFD Commissioning & Configurations

[@LuisRamos-rw5yu]

You the man thanks for taking time to do vid

[@spikester]

Large industrial sized LED drivers capable of dimming also work with a 0-10V line for the dimming control input, also its an isolated input. That makes much sense that the principles are similar.

[@Andrea-pz5re]

we have got a couple of brand new ACH550s in stock if anyone is looking for one..

[@lee-johnson]

I have a bunch of experience with many drives , but I have an issue with Eaton drives in that they won't restart after a power outage. They go into alarm. I've heard there is a parameter that will fix this and have it auto restart. Would you happen to know? Thanks for the helpful videos.

[@HVACTIME]

I wish I knew

[@Dmc963]

So there’s a setting in the VFD that says accelerate and decelerate check to make sure they’re not set to 30 seconds because what ends up happening is it’ll start up too fast and trip out so set them to 60 seconds both accelerate and decelerate

[@Dmc963]

Most automation set to 60 secs …At least in my area (siemens)

[@Ak3rn0]

If I got more info about the drive, I can verify which exact parameter it is. What I’ve found is: Model 9000X: menu M1, G1.8 somewhere in there PowerXL DC1: Parameter P-30: Start Mode should be set to something between 1-6, depending on how many attempts the drive should make. “Auto-0” is infinite, “Auto-1” through to “Auto-5” are the number of attempts. Model M Max P6.13 should be set to 1 for auto restart All these parameters are for auto restart after a fault. Yaskawa and Siemens have a setting where they require the signal to go off, then on, in order to restart the drive after a power outage. They essentially consider an ON signal received before the drive powers on to need to be reconfirmed. I don’t know if Eaton also does this, and I don’t know where that setting might be.

[@HVACR559]

I can just imagine what a nightmare it will be if a TRANE has modbus communication with the VFD and the VFD dies. Then it doesn't want to run bypassed because it can't talk to the drive.