5 wire locks and alarm?

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blandq

Member - Posts: 1

Joined: May 14, 2004

Posted: June 07, 2004 at 3:31 PM / IP Logged

I have a new set of MES door solenoids for an early mustang (switch-less). They seem to work very well. Now I find the dual relay rest at ground, ground initiated interface between alarm and poopers through 12volt.

- Thank you! It makes perfectly good sense!

WHAT I AM HAVING TROUBLE WITH:

As an Electrical Engineer AND not knowing what the insides of the relay (MES lock control) module actually looks like, it seems that in effect we are shorting 12V to ground when the alarm fires and the realy interface applies 12 volts to one leg of the MES actuators. During testing I found that after 8-12 acuations within a 60 second period that the wires were warm...too warm.

As I mentioned above a review of what we are actually doing seems to make sense...yep, apply 12V to ground and the wire does get hot....

Comments please...Not on this side of the EE world, as opposed to Unix MP servers, I want to make sure I'm not missing something.

auex

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Joined: December 23, 2002

Location: Arizona, United States

Posted: June 07, 2004 at 5:02 PM / IP Logged

Think of the popper as a reversed speaker, or reversed speaker engine at least, that moves in one direction. What happens is that you apply +12V through one side of a coil, creating magnetism, and pulling another magnet. It draws alot of current to accomplish this, speakers/coils aren't very efficient. Most of the energy gets turned into heat causing the wiring to heat up. This is completely normal, and it is unlikely that you will be using the popper enough times in a short period of time to cause any harm to it or the vehicle. Flame away.

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5 wire locks and alarm?

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