Relay hookup with a Firgelli actuator

[StealthRT]

Hey all i am in need of some help with hooking up this acuator i got from Firgelli to my USB controlled 4 relay board.

The background on the relay board is this:

RAS-05-15: 5V / 72mA, 15A/24VDC (120VAC), 10A/250VAC
https://denkovi.com/Documents/23-3.pdf
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And this is how the Acuator hook up to a relay + switch:
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I cant seem to get the pinout correct when looking at their example there.

Is it:

RELAY UP:
Purple wire > C
Grey wire > NC
Blue wire > NO

RELAY DOWN:
Black wire > C
Grey wire > NC
Blue wire > NO

Does that seem correct?

David

 

[ericgibbs]

hi,
The colour coding you have posted looks correct to me.
RELAY UP:
Purple wire > C
Grey wire > NC
Blue wire > NO

RELAY DOWN:
Black wire > C
Grey wire > NC
Blue wire > NO

 

[StealthRT]

They are 5V relays so is this going to still trigger?

David

 

[StealthRT]

And i also just noticed that the wire colors are on both sides so here is a more detailed descrption:

RELAY UP:
Purple wire > C (1)
Grey wire > NC (5)
Blue wire > NO (4)

RELAY DOWN:
Black wire > C (1)
Grey wire > NC (5)
Blue wire > NO (4)

David

 

[StealthRT]

The cord on the bottom of the actuator in the picture shows the external power. "Cable to track power adapter"

Here is a picture of the product:
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David

 

[ericgibbs]

And i also just noticed that the wire colors are on both sides so here is a more detailed descrption:

David

hi David,
The wiring is the same,OK.
The 5V relays are powered from the +5V USB
The relay contacts are switching the 12Volts.

EDIT:
You were asking about the coloured wiring to the relay contacts.
Are you asking another question in your post #5.???

 

[StealthRT]

hi David,
The wiring is the same,OK.
The 5V relays are powered from the +5V USB
The relay contacts are switching the 12Volts.

EDIT:
You were asking about the coloured wiring to the relay contacts.
Are you asking another question in your post #5.???

I was giving more detailed about the picture.

 

[KeepItSimpleStupid]

I DON'T RECOMMEND wiring a relay for up and a relay for down.

I DO reccomend using a relay for direction and a relay for enable.

Limit switches may require a relay each to integrate if the limit switch can't carry the actuator load.

You do want the ability to be able to move the actuator in the opposite direction when it's at a limit.

The beauty of this method is two relays on, don't do any damage.

Relay dynamic braking is easy too. Just use an SPDT relay for the enable.

Monitoring DC presence; Full wave rectified can tell you if your at a limit.
Uisng one for fwd and one for rev might help even more.

 

[StealthRT]

I DON'T RECOMMEND wiring a relay for up and a relay for down.

I DO reccomend using a relay for direction and a relay for enable.

Limit switches may require a relay each to integrate if the limit switch can't carry the actuator load.

You do want the ability to be able to move the actuator in the opposite direction when it's at a limit.

The beauty of this method is two relays on, don't do any damage.

Relay dynamic braking is easy too. Just use an SPDT relay for the enable.

Monitoring DC presence; Full wave rectified can tell you if your at a limit.
Uisng one for fwd and one for rev might help even more.

It already has a built in limit switch for up and down so no worries. 2 Relays will do the job just fine

David

 

[KeepItSimpleStupid]

What happens when both relays are on?

 

[StealthRT]

What happens when both relays are on?

That wont happen since I am coding the program that will control them )

 

[ericgibbs]

That wont happen since I am coding the program that will control them )

hi,
From what you have posted, I understood this is a proven off the shelf product, is that correct.?

 

[StealthRT]

hi,
From what you have posted, I understood this is a proven off the shelf product, is that correct.?

Yes, it is a solid product. And so it is clear, the manufacture has software to run this relay board but i needed something more tailored to my project. So i am writing some small code to turn them on and off.

David

 

[Newtonian]

What happens when both relays are on?

Each relay is switching the polarity going to the motor wire, one relay on each motor wire. So with no relays triggered both motor wires would be at ground = no voltage across motor = no movement. If one relay is triggered, that motor wire goes to the +voltage coming from the track power adaptor. This causes the motor to move in one direction. Vice versa for the other relay being triggered, the motor will move in the opposite direction.

If both relays are triggered, both motor wires will be at the same +voltage, meaning no voltage difference across the motor which means no current will flow.. no movement.

By using two relays you get dynamic braking, once you release both relays the motor wires will be held to ground and the motor will resist turning (back EMF).

If you use the other method-- one DPDT relay (for direction) and one SPST (for enable), then when you 'disable' using the SPST the motor wire(s) will float and the motor will drift to a stop, not stop rapidly as with dynamic braking.

If I've missed something, or it doesn't look right.. let me know.

 

[Newtonian]

Each relay is switching the polarity going to the motor wire, one relay on each motor wire. So with no relays triggered both motor wires would be at ground = no voltage across motor = no movement. If one relay is triggered, that motor wire goes to the +voltage coming from the track power adaptor. This causes the motor to move in one direction. Vice versa for the other relay being triggered, the motor will move in the opposite direction.

If both relays are triggered, both motor wires will be at the same +voltage, meaning no voltage difference across the motor which means no current will flow.. no movement.

By using two relays you get dynamic braking, once you release both relays the motor wires will be held to ground and the motor will resist turning (back EMF).

If you use the other method-- one DPDT relay (for direction) and one SPST (for enable), then when you 'disable' using the SPST the motor wire(s) will float and the motor will drift to a stop, not stop rapidly as with dynamic braking.

If I've missed something, or it doesn't look right.. let me know.

Let me correct myself, you can do dynamic braking by using a SPDT relay as KeepItSimpleStupid said.. missed that. Personally I find it's easier to use SPDT relays and boards (tend to be less expensive and more readily available than DPDT). Good to have multiple options though, for sure..

 

[KeepItSimpleStupid]

Two SPDT relays is not a bad way at all. Now I remember what I did with a system using a few motors. I used an H-Bridge and an SPDT relay for dynamic braking and a relay only for a high current motor going in one direction. The H-bridge IC's weren't hi-power back then and H-bridges with coast and brake I either didn't know about or were not available. One of the motors had a potentiometer limit. I did it slightly wrong because there was a movable contact in the system. Worked OK, though.