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please help me motor controller problem

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dannyc9

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hi everybody im new here

im tryin a little home automation in my downtime but im havin a problem with a motor for my blinds

i using a 12 channel relay controller **broken link removed** same as that one there
im using channel one for down channel 2 for up
i have them both wired to the same power supply a 12 v battery at the moment
but when i power the unit up the wires heat up and fry
i have tried everything i can think off even using a diode to stop the current flowing wrong way in to the bat but that also super heats

**broken link removed** a simple diagram if it helps

so please help me
many thanks danny
 
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andre_luis

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What I observed above :

1 ) Seems like you´re doing a short-circuit when switches A-B to ON state.
2 ) How can motor be supplyed, if POS and NEG terminals are connected toghether ?

Follows what I can sugest :

**broken link removed**

+++
 
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dannyc9

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i do see what u mean but the channels are part of a rf controllers your diagram the motor would only recive power when both relays on both channels where on

each pole on the motor has a pos and neg lead connected to it so channel one makes the motor spin clockwise channel 2 anti clockwise so that is the reason for the poles been lik that ..if i run 2 power supplies it works fine
 

andre_luis

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I edited previous image to fix a 'bug'.
Check now again please.

+++
 

dannyc9

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with that set up the motor would spin all the time clockwise as both ar connected to always open always closed so there isnt a off part and with each only havin just possitive to common and negative to the other common i dont even think they would power up .. but i will wire it up and see as i aint tried that
configuration yet
 

andre_luis

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It is possible to use another relay chanel ?

+++
 

dannyc9

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yes it is but dont see how that would help as that would mean more wires to the power supply and motor
 

Einar M

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Connect the B- to the C terminals on the relays, not to the motor.
 

andre_luis

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yes it is but dont see how that would help as that would mean more wires to the power supply and motor

The both previous 2 relays could be used to control motor direction, according sugested topology.
The 3rd relay, can be used to control ON/OFF status.

+++
 

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