
LV Control signal crosstalk on the HV neutral line
Getting powered hurricane shutters installed. 8 shutters at 2A draw each.
Two versions, one remote controlled. NOT desired for many reasons, primary being home automation (Home Assistant) being implemented.
The other is hardwired for direction. 4 wire, Ground, Neutral, L1 and L2.
( https://dooyamotorusa.com/dooya-motors/24-dm45m-5013-dooya-motor.html )
I am being told that the motors have an issue: if you wire all into a branch circuit together, the operation of one may cause another to 'stutter' in operation. OR have undesired operation. Was found on a previous installation YEARS (?!?!) ago. No other reports they knew of.
I am being told there is crosstalk on the HV neutral that makes this behavior.
I suspect it is crosstalk between the operating microprocessors, maybe, not a voltage surge/drop issue. The tech the installer got me helped, but was unable to answer specifics. They are looking 'upchain' for someone more knowledgeable. This is happening now, 18MAY2026, as I type. Will update.
So the verbal solution from the installer is a HOME RUN for each motor. Supposedly stops the problem. Awaiting details.
8 home runs of 16ga (2A rated load from shutter) each ~90'?
And... gang them up on one breaker? Add a sub panel with 8 more breakers?
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I was hoping to use one 20A branch to feed all of them.
Switching the power inputs via locally housed relays and networked control switching.
But this would leave a common neutral full time.
I see these are 110v/220v 5a.
( https://www.digikey.com/en/products/detail/delta-electronics/05DBAW5/3830626 ) Yaaaaay DIGIKEY!!
datasheet does not add a lot of clarity. https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/12/05DBAW5.pdf
For 110v I am thinking line in 1 to hot, Line in 2 to neutral, ground to ground lug.
Load side, shared common ground with line, neutral and hot through the filter.
Should give EMC/EMI filtering of the neutral.
Sound reasonable? :)
Thanks!