Model Boat Mayhem

Technical, Techniques, Hints, and Tips => The "Black Arts!" ( Electrics & Electronics ) => Topic started by: Angus64 on April 23, 2012, 11:29:31 am

Title: Relay switch
Post by: Angus64 on April 23, 2012, 11:29:31 am: Hi Boys. I'm here with another electronics question. I purchased a Omron 10A/16A electronic relay switch to switch my cooling pump on & off but the instructions are not very clear, Anyone out there had any experience with these switches,It has three terminals.i have added a couple of pictures hope it might help

(http://s17.postimage.org/mda9lhtzf/Relay_switch.jpg) (http://postimage.org/image/mda9lhtzf/)

(http://s17.postimage.org/up60mqrd7/Relay_switch_2.jpg) (http://postimage.org/image/up60mqrd7/)
Title: Re: Relay switch
Post by: Tug-Kenny RIP on April 23, 2012, 11:38:35 am: I should imagine that one terminal is connected to another and switches to connect to the other when energised.
Title: Re: Relay switch
Post by: essex2visuvesi on April 23, 2012, 11:58:42 am: I would think it is +ve feed from battery, Common ground (-ve) and +ve switched power to device

Never seen one before so just taking a wild stab in the dark, so dont ask me which is which lol
Title: Re: Relay switch
Post by: Angus64 on April 23, 2012, 12:43:08 pm: Hi Boys .Thanks for trying, I found a bit of info on this switch, does this help. Can you tell me where the wires go from that diagram

Angus.
(http://s17.postimage.org/pfkch5yiz/Relay_switch_3.jpg) (http://postimage.org/image/pfkch5yiz/)
Title: Re: Relay switch
Post by: Netleyned on April 23, 2012, 12:44:05 pm: It could be power feed to centre, and a normally open and normally closed terminal on either side.
A multimeter will tell you all you need to know.

Ned
Title: Re: Relay switch
Post by: Netleyned on April 23, 2012, 12:46:11 pm: Quote from: Angus64 on April 23, 2012, 12:43:08 pm
Hi Boys .Thanks for trying, I found a bit of info on this switch, does this help. Can you tell me where the wires go from that diagram

Angus.
(http://s17.postimage.org/pfkch5yiz/Relay_switch_3.jpg) (http://postimage.org/image/pfkch5yiz/)

Just beat me to it :} :}

Ned
Title: Re: Relay switch
Post by: petermun on April 23, 2012, 03:12:59 pm: From the diagram, the normally open (n/o) contact of the switch is connected to the positive side of the power supply, the normally closed (n/c) contact is connected to the circuit, but has no power supply. The centre common (c) contact moves to n/o when the relay is activated by the receiver output, and supplies power to the circuit through the load. Pete
Title: Re: Relay switch
Post by: malcolmfrary on April 23, 2012, 03:43:32 pm: What they said - I would just add that if following that diagram, the fuse really needs to be in the battery +ve supply so that the rest of the model is protected. Where it is, the only thing being protected is the relay contact, and that against the possibility of a shorted lamp.
Title: Re: Relay switch
Post by: Angus64 on April 24, 2012, 10:13:20 am: Thanks for the advice Boys, I took the switch into the local auto electrician this morning & he told me the same as Pete, Spot on mate thanks. I try & get it fitted tomorrow & let you know how I go.

Angus.
Title: Re: Relay switch
Post by: Angus64 on April 25, 2012, 08:08:35 am: Hi Boys. I fitted my Omron relay switch today, worked like a charm, I will try it out on the water when the weather get's a bit warmer.

Angus.