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  #1  
Old 12-11-19, 20:21
Erik Nijenhuis Erik Nijenhuis is offline
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Join Date: Feb 2016
Location: Markelo (NL)
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Default working electromagnetic switch ?

who can tell me working of the electromagnetic switch on the back of the early dashboard of the cab 13 cmp.
And who has a picture or schedule of the wiring of it?
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  #2  
Old 12-11-19, 22:06
Phil Waterman Phil Waterman is offline
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Default Current Limit Relay

Hi Erick


On the wiring diagram it is called "Current Limit Relay" how it functions is that if the current flow exceeds a limit it starts opening and closing very fast to limit the current flow.

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The Overload Protection used on CMPs are varied but in general, they can not be called circuit breakers or fuses. They are a current regulator and they either work or they don’t. If you over load (short) the system the unit sit there and vibrate limiting the current flow to 25-30 amps hopefully low enough that a fire doesn’t start. The one on my HUP functions great. Before I put in the new wiring harness the old one shorted out and you could hear the limiter buz like a door buzzer. On the C60 the unit was fried and I replace it with a 30 amp automotive thermal circuit. It has only activated once when a wire came loose and shorted out behind the dash. Of course it was at night and the headlights went out.



Cheers Phil
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  #3  
Old 15-11-19, 20:36
Erik Nijenhuis Erik Nijenhuis is offline
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Location: Markelo (NL)
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Hello Phil,
Thank you for your explanation. I wil make a test set up to find out if the current limit relay stil worksfor my C8a HUP C1

Greetings from the Netherlands,
Erik Nijenhuis
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