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#55254 - 08/23/05 07:47 AM Photo eye  
tonyc  Offline
Member
Joined: Sep 2002
Posts: 18
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 09:36 AM Re: Photo eye  
gideonr  Offline
Member
Joined: Dec 2004
Posts: 161
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).]


#55256 - 08/23/05 10:21 AM Re: Photo eye  
Dnkldorf  Offline
Member
Joined: Dec 2004
Posts: 1,064
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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