I have a solid state relay that has four terminals-two on the input side (32vdc) and two out the output side 24-240vac). The problem is that this relay is not functioning like a EMR. Is it wrong for me to assume that it should? I assume that when the DC side is energized that should allow the AC side to be completed. Any help is appreciated.
Wiring Solid State Relay
- Thread starter Benton
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I dont know what EMR is but the SS relays I've dealt with have two input screws on top that act as the coil and two output screws on the bottom that act as a contact. Just like you said
Dont know why you have four screws on the input. Double check your wiring and if it dont work...pitch it, they are not expensive. It is likely fried.
Also, check that the ratings have not been exceeded and if it requires a blocking diode across the DC side.
Dont know why you have four screws on the input. Double check your wiring and if it dont work...pitch it, they are not expensive. It is likely fried.
Also, check that the ratings have not been exceeded and if it requires a blocking diode across the DC side.
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Barndog
Senior Member
- Location
- Spring Creek Pa
The SSR's i have dealt with need a load on the contact to fire the relay. maybe you dont have the right output to use the SSR
jumper
Senior Member
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- 3 Hr 2 Min from Winged Horses
ptonsparky
Tom
- Occupation
- EC - retired
Make sure your polarity is correct on the DC side. Control side.
This is exactly what I was doing... I guess this is my problem
Twoskinsoneman
Senior Member
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- West Virginia, USA NEC: 2020
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- Facility Senior Electrician
What's the model number on it?
That's how those that I have used work. In what way is yours not functioning like an EMR?
n1ist
Senior Member
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- Massachusetts
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- Principal Electrical Engineer
For AC-output SSRs, the output device on them is a triac (or back-to-back SCRs). They require a minimum load to turn on, and depend on the zero-crossing to turn off. Many also depend on the zero crossing to turn on. Putting an ohmmeter across them won't work for testing them.
/mike
/mike
- Location
- San Francisco Bay Area, CA, USA
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- Electrical Engineer
But a Wiggy will...
Open Neutral
Senior Member
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- Inside the Beltway
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- Engineer
Test it.
Get a oh 60W incandescent lamp & a fused suicide cord; put the SSR output in series.
Now put say 12V DC on the input, with a mA meter in that loop. The SSR should draw a few mA [~2-10, I'd SWAG; the exact value does not matter much...] and the lamp should illuminate.
If it draws zero, either you have the DC polarity backwards, or it is d_a_e_d....
Get a oh 60W incandescent lamp & a fused suicide cord; put the SSR output in series.
Now put say 12V DC on the input, with a mA meter in that loop. The SSR should draw a few mA [~2-10, I'd SWAG; the exact value does not matter much...] and the lamp should illuminate.
If it draws zero, either you have the DC polarity backwards, or it is d_a_e_d....
the model number is RS3-1D25-24T(6)
Thanks!
How do you check a solid state relay with a wiggy in the same manner as you would an ohmmeter? ie de-energized?
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