load failure warning - Electronic Circuits Projects Diagrams Free

mltj74 · 10th May 2008, 03:23 AM

i was woundering if anyone knew a circuit that would light up a led when a load quit working like say a pump quit working

rjvh · 10th May 2008, 05:25 AM

what kind of pump/motor ?

normaly you have thermal overload protection with auxilary contacts that you use for a indicator light or alarm

or you need a status indicator (on/off) light
than you switch it with the contactor contact

Robert-Jan

mltj74 · 10th May 2008, 03:52 PM

its a 12 volt fuel pump and i would lie to use it on some 3 way valves also if anyone of these failed it could cause some major damage i would just like a indicator light in my cab to let me know one of them failed

rjvh · 12th May 2008, 01:02 AM

Quote:

Originally Posted by mltj74

its a 12 volt fuel pump and i would lie to use it on some 3 way valves also if anyone of these failed it could cause some major damage i would just like a indicator light in my cab to let me know one of them failed

its just the motor that you want have an indication or is it if one of the valves failed that you want to have an indication??? or both??
Robert-Jan

mltj74 · 12th May 2008, 02:42 AM

both so i would like a circuit flexable enough to use with both making 3 or so different circuits for each load wouldnt be a problem

rjvh · 12th May 2008, 03:39 AM

do you use solenoid valves???

Robert-Jan

Leftyretro · 12th May 2008, 08:32 PM

Quote:

Originally Posted by mltj74

both so i would like a circuit flexable enough to use with both making 3 or so different circuits for each load wouldnt be a problem

Or do you really want a final control element alarm when there is lack or low fuel pressure? A pressure sensor would give the best overall alarm that something is wrong, without having to have several sensors to detect problems on individual stages and parts and peices of the system.

Lefty

mltj74 · 12th May 2008, 09:26 PM

pressure gauge is no good the light or alarm would be going off all the time theres no pressure differnce between big mess and normal operation and yes they are solenoid valves

10th May 2008, 03:23 AM	(permalink)
mltj74 New Member	load failure warning i was woundering if anyone knew a circuit that would light up a led when a load quit working like say a pump quit working

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Latest
AC Voltage Meter	pursang	General Electronics Chat	11	27th January 2008 01:34 PM
Inchworm adapter bd	lemonyx	Micro Controllers	9	9th May 2007 07:01 AM
Validating Code Without PIC	burg	Micro Controllers	4	22nd April 2007 04:14 PM
Motor Torque	watzmann	General Electronics Chat	5	8th September 2005 01:26 AM
Crazy Resonance Problem	cchalmers	General Electronics Chat	31	14th February 2005 03:46 PM

10th May 2008, 05:25 AM	(permalink)
rjvh Experienced Member	what kind of pump/motor ? normaly you have thermal overload protection with auxilary contacts that you use for a indicator light or alarm or you need a status indicator (on/off) light than you switch it with the contactor contact Robert-Jan

10th May 2008, 03:52 PM	(permalink)
mltj74 New Member	its a 12 volt fuel pump and i would lie to use it on some 3 way valves also if anyone of these failed it could cause some major damage i would just like a indicator light in my cab to let me know one of them failed

12th May 2008, 02:42 AM	(permalink)
mltj74 New Member	both so i would like a circuit flexable enough to use with both making 3 or so different circuits for each load wouldnt be a problem

12th May 2008, 03:39 AM	(permalink)
rjvh Experienced Member	do you use solenoid valves??? Robert-Jan

12th May 2008, 09:26 PM	(permalink)
mltj74 New Member	pressure gauge is no good the light or alarm would be going off all the time theres no pressure differnce between big mess and normal operation and yes they are solenoid valves