Linear Actuator - Electronic Circuits Projects Diagrams Free

H_guy · 25th September 2008, 04:36 PM

I am not not that good at electronics, I am a mechanical kind of guy. I built a stand that uses a linear actuator to move a trap thrower up and down while the trap thrower moves itself from side to side to make it "wobble". My system has 2 momentary switches that set the limits on how far the linear actuator will go and theoretically when the switch is pushed, it will reverse the polarity of the linear actuator until the other switch is pushed and then the polarity switches again and repeats until it is turned off. The guy who I built it for has a DPDT, 12V DC latching relay from Grainger.com that should work, but I don't know much about this relay. I would think that since it is an 8 pin relay, it would have 2 pairs of pins that I could wire the switches to so it would switch the relay. Does anybody know more about these relays and/or have a solution as to how I can do this?

Externet · 25th September 2008, 09:31 PM

There is several kinds of latching relays; single coil, two coils, reversing polarity, mechanical latching,... and that affects the wiring. You need that information to continue.
One momentary switch could trigger one coil, the other the other coil, the DPDT contacts can easily reverse direction of the motor; but still there is more to it depending on details you have not disclosed.

H_guy · 25th September 2008, 09:50 PM

Here are the spec's off of Grainger.

Relay, Plug In, Square, Latching, Contact Form DPDT, Pins 10, Base Type Square, Socket 5X853, 1ERG3, Number of Contacts 2, Contact Amp Rating 16 R, Contact Amp Rating 8 L, Contact Material Silver Alloy, Coil Volts 12VDC, Coil VA Rating 3, Hz 50/60, Height 1.9 In, Width 1.5 In, Standards cULus, cURus, CSA And CE

It is the Dayto 1EHY4

I was looking at a different one when I said 8 pins...

Willbe · 25th September 2008, 11:22 PM

Hosfelt.com has an excellent price/performance ratio if they have what you want, or if it can be cobbled together from what they have. Grainger and MSCdirect are my last choices for electronic stuff.

KMoffett · 26th September 2008, 09:34 PM

I can't find any pin out number diagrams for that latching relay, but with 10 contacts it should have 2 contacts for a LATCH coil (~48Ω), 2 contacts for an UNLATCH coil (~48Ω), and 6 contacts for the DPDT switch. The attached should serve the reversing operation.

Ken

Externet · 27th September 2008, 04:22 AM

Could not find data either. That schematic should be exactly the one !

KMoffett · 27th September 2008, 08:58 PM

I noticed that Grainger's latching relays are about $50. I was playing around with the idea, and you could get the reversing action with two stock DPDT relays. Probably much cheaper. Auto starting on power-up wasn't possible, so I added start and stop switches. Just some mind experiments.

Ken

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

Similar
Title	Starter	Forum	Replies	Latest
Driving Linear Actuator from PIC	oferx	Micro Controllers	7	10th April 2008 10:31 PM
Linear Actuator for Artist	Bdoop21	General Electronics Chat	3	7th October 2007 10:02 PM
Potentiometer link to linear actuator	dermotcaf	Electronic Projects Design/Ideas/Reviews	5	22nd January 2007 12:11 PM
Need some other idea on miniature linear actuator	mister_e	Datasheet/Parts Requests	4	28th July 2006 07:57 PM
Mini-Space Telescopic Cylinders, Linear Actuator, SMAs sprin	odense	Robotics Chat	0	10th August 2005 12:36 AM

25th September 2008, 04:36 PM	#1
H_guy	Linear Actuator I am not not that good at electronics, I am a mechanical kind of guy. I built a stand that uses a linear actuator to move a trap thrower up and down while the trap thrower moves itself from side to side to make it "wobble". My system has 2 momentary switches that set the limits on how far the linear actuator will go and theoretically when the switch is pushed, it will reverse the polarity of the linear actuator until the other switch is pushed and then the polarity switches again and repeats until it is turned off. The guy who I built it for has a DPDT, 12V DC latching relay from Grainger.com that should work, but I don't know much about this relay. I would think that since it is an 8 pin relay, it would have 2 pairs of pins that I could wire the switches to so it would switch the relay. Does anybody know more about these relays and/or have a solution as to how I can do this?

25th September 2008, 09:31 PM	#2
Externet	There is several kinds of latching relays; single coil, two coils, reversing polarity, mechanical latching,... and that affects the wiring. You need that information to continue. One momentary switch could trigger one coil, the other the other coil, the DPDT contacts can easily reverse direction of the motor; but still there is more to it depending on details you have not disclosed. __________________ Abolish the deciBel ! Last edited by Externet; 25th September 2008 at 09:33 PM.

25th September 2008, 09:50 PM	#3
H_guy	Here are the spec's off of Grainger. Relay, Plug In, Square, Latching, Contact Form DPDT, Pins 10, Base Type Square, Socket 5X853, 1ERG3, Number of Contacts 2, Contact Amp Rating 16 R, Contact Amp Rating 8 L, Contact Material Silver Alloy, Coil Volts 12VDC, Coil VA Rating 3, Hz 50/60, Height 1.9 In, Width 1.5 In, Standards cULus, cURus, CSA And CE It is the Dayto 1EHY4 I was looking at a different one when I said 8 pins...

25th September 2008, 11:22 PM	#4
Willbe	Hosfelt.com has an excellent price/performance ratio if they have what you want, or if it can be cobbled together from what they have. Grainger and MSCdirect are my last choices for electronic stuff.

26th September 2008, 09:34 PM	#5
KMoffett	I can't find any pin out number diagrams for that latching relay, but with 10 contacts it should have 2 contacts for a LATCH coil (~48Ω), 2 contacts for an UNLATCH coil (~48Ω), and 6 contacts for the DPDT switch. The attached should serve the reversing operation. Ken Attached Thumbnails __________________ "To invent, you need a good imagination and a pile of junk." Thomas A. Edison (1847 - 1931)

27th September 2008, 04:22 AM	#6
Externet	Could not find data either. That schematic should be exactly the one ! __________________ Abolish the deciBel !

27th September 2008, 08:58 PM	#7
KMoffett	I noticed that Grainger's latching relays are about $50. I was playing around with the idea, and you could get the reversing action with two stock DPDT relays. Probably much cheaper. Auto starting on power-up wasn't possible, so I added start and stop switches. Just some mind experiments. Ken Attached Thumbnails __________________ "To invent, you need a good imagination and a pile of junk." Thomas A. Edison (1847 - 1931)