Relay coil burning out

[JAZZCNC]

The only thing I can think of that caused the problem was that the relays are 24vAC and the power supply is a solid 24vDC. The next relay will be DC rated, and I can only think that the AC relay coil limits current to a 'safe' level due to its' inductance.

Eh why would you use a AC relay with DC supply you numpty Rob. .
Would you put AC servo's on your router and Try to run them on DC supply and expect to work correctly.!! . . . . The AC relay didn't limit to a safe level it tolerated it until couldn't tolerate any more then melt down.!!

[cropwell]

Eh why would you use a AC relay with DC supply you numpty Rob. .
Would you put AC servo's on your router and Try to run them on DC supply and expect to work correctly.!! . . . . The AC relay didn't limit to a safe level it tolerated it until couldn't tolerate any more then melt down.!!

.
As I said Jazz - I had them in stock.

My workshop gets cold in the winter, do you reckon I could wire some stepper motors up to the mains and use them as heaters, I have a box of high inductance Astrosyn jobbies ?

I wouldn't expect an AC servo to work on DC, cos I know how servos work and I know how a relay works, it is just a solenoid. The first burn-out was caused by excess current and I will put my hand up to not thinking about it. The second burn-out was because the furnace owner replaced the relay with like.

We put in another AC relay to keep the furnace on over the weekend, but it will be replaced by a DC block on Monday.

If you want to see the control panel it is monitored by an IP camera
http://www.akroydglass.supracam.net/
login: guest
password: guest

[suesi34e]

.
As I said Jazz - I had them in stock.

My workshop gets cold in the winter, do you reckon I could wire some stepper motors up to the mains and use them as heaters, I have a box of high inductance Astrosyn jobbies ?

I wouldn't expect an AC servo to work on DC, cos I know how servos work and I know how a relay works, it is just a solenoid. The first burn-out was caused by excess current and I will put my hand up to not thinking about it. The second burn-out was because the furnace owner replaced the relay with like.

We put in another AC relay to keep the furnace on over the weekend, but it will be replaced by a DC block on Monday.

If you want to see the control panel it is monitored by an IP camera
http://www.akroydglass.supracam.net/
login: guest
password: guest

[suesi34e]

Hi Rob,

I hope your doing OK there and the projects are coming along.

I have no idea what your on about as you know wiring a plug is my limit! Anyhow I have a few 3 phase old NVR's, switches and some triple pole MCB's as it is you and if any of it would help you happy to bung you something in the post. If you after parts fire an image and some spec and I will see if I have something.

All the best

Suesi

[cropwell]

I'm good thanks Steve, all the bits we want are available locally and the relays are only about a fiver.

Cheers,

Rob

[suesi34e]

I'm good thanks Steve, all the bits we want are available locally and the relays are only about a fiver.

Cheers,

Rob

[suesi34e]

That's good then Rob.
All the best