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#55254 - 08/23/05 04:47 AM Photo eye
tonyc Offline
Member
Registered: 09/27/02
Posts: 18
Loc: Chesapeake, Va
Working on some parking lot lights I had a photo eye rated for 2000 watts wired to control a lighting contactor but for some reason when the contactor tries to pull in it chatters real bad. I have had multiple photo eye failures I have no clue anybody with an idea as to why. Other than that I am looking for a heavy duty timer that compensates for daylight savings time to put in place of the photo eyes any suggestions.
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#55255 - 08/23/05 06:36 AM Re: Photo eye
gideonr Offline
Member
Registered: 12/18/04
Posts: 161
Loc: Edinburgh, Scotland, UK
Could this be the photo eye is meant for resistive loads, but the lighting contactor is essentially inductive? Internally the photo eye may have a zero-crossing triac driver, which is suitable for resistive loads, but you would need one with all-angle triac drive or just relay contacts. Tried another type or brand of photo eye?

Another possibility could be line volts droop when contactor pulls in affecting the photo eye?

[This message has been edited by gideonr (edited 08-23-2005).]
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#55256 - 08/23/05 07:21 AM Re: Photo eye
Dnkldorf Offline
Member
Registered: 12/12/04
Posts: 1064
Loc: nowhere usa
Tony, is this a new installation, or exsiting situation and now you found the relay chattering?

Need to know this.


Dnk........
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