Blenny Pump Not Working

[Jeff Rubin]

Hello, trying to set up a new Blenny doser. I believe I have it setup correctly but nothing is working. I'm just trying to do a manual dose and the pump does not move or do anything, I believe when I first got it, if I rebooted it or power cycled it, as it was booting backup I could hear the pumps cycle through and move a little but I don't think it is doing that now. Any suggestions?

Thanks

 

[Danny]

Do you have the power supply plugged into it and have it powered up? That has to be powered for the pumps and outputs to work.

 

[Jeff Rubin]

Have the Hydros Launch powered, and the XP8 powered and the Blenny, I thought was supposed be powered through the command bus with terminals on the ends of the Blenny and the XP8. Is this not correct?

 

[Jeff Rubin]

I thought if it was powered through the command bus and with power it could cause damage?

 

[Danny]

I thought if it was powered through the command bus and with power it could cause damage?

The only supply at this time that has an issue with other sources of power on the command bus is the supply that connects directly to the command bus port of one of the controllers. That supply has no isolation circuits. The controllers with a AC cord or a separate power port have isolation circuits between the power input to the controller and the command bus. This is for anyone that comes across this thread. The OP and I were communicating directly on this. As a general rule any controller that has a AC cord or a separate power port has to have the power plugged in for the outputs on the controller to work since they normally draw power from the power side of the isolation circuit. The reason is that the outputs can overload the command bus if all are in use and near their max currents. So it is best to place them on the power input side of the isolation.