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Contact Working Opposite Way


MJE

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ok sorry its taken me so long to reply, i was getting an error accessing the site last night

 

I put my lamps across it and it is closed when the magnet is in place,I asked the guy I bought it off and he said that's what is should be doing so it isn't a N/O contact, I will try the in line resistor now, but it wasn't showing tamper? it was saying 1001 door open when it was setting and then would only set if the i opened the door.


The eBay description is "normally closed"
To my way of thinking that means the contact is closed without any outside influence (eg magnet).
When the magnet is adjacent to the contact, the contact will open.

 

 

Meant for door alarms i reckon.

 

 

You can get them normally open. Have you metered it?
You can get them normally open. Have you metered it?

 

 

Yes, Knights do certain ones as NO

 

 

Yep use them a lot on nurse call systems for door monitoring.

 

 

thats automatically what i thought as well, and then thought the contact they had sent was the wrong one, but it is 100%  closed with magnet in place 

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whats the diagnostic reading when closed (short im guessing) and you only have the eol resistor not the shunt as well. It shouldnt be short when closed.

Whats a lamp, are you passing current through it for test purposes and a lamp? you need a meter in that case

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No haha its these

 

test lamps

 

http://www.fluke.com/fluke/uken/electrical-testers/Electrical-Testers/T90-T110-T130-T150-Voltage-and-Continuity-Testers.htm?PID=73757

 

the inline resistor solved the problem.

 

the only other thing now is, its saying tel line fault press enter to continue when setting, even though its set to no in 50.engineers- 1paramaters 18stopset- 4.tel line fault - no

 

cant find any other settings for the tel line?

 

thanks for all your reply's

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No haha its these

test lamps

http://www.fluke.com/fluke/uken/electrical-testers/Electrical-Testers/T90-T110-T130-T150-Voltage-and-Continuity-Testers.htm?PID=73757

the inline resistor solved the problem.

the only other thing now is, its saying tel line fault press enter to continue when setting, even though its set to no in 50.engineers- 1paramaters 18stopset- 4.tel line fault - no

cant find any other settings for the tel line?

thanks for all your reply's

What did you correct on the door?

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