Customer:
I’m trying to control some small heaters with a relay. I tested with an SSR Craydom cmx60d10.
Original message (Croatian)
Svejedno koji je relej.Sa relejem bi palio neke male grijace. Probao sam sa SSR Craydom cmx60d10
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Originally submitted via email support on 15 December 2016. Migrated to the forum for community visibility.
Soldered Support:
You need to check the relay control voltage. According to the datasheet, this relay activates at 3VDC to 10VDC. Try measuring the output voltage on the moisture sensor - it should be 0-3 VDC. We recommend connecting a transistor at the module output. This tutorial may help: https://vimeo.com/
Original message (Croatian)
potrebno je provjeriti koliki je kontrolni napon releja. Prema datasheetu ovaj relej se aktivira 3VDC do 10VDC. Probajte mjeriti izlazni napon na senzoru vlage, on bi trebao biti od 0-3 VDC.
Preporučujemo da na izlazu modula spojite tranzistor, ovaj tutorijal Vam može pomoći : https://vimeo.com/
Customer:
The relay control voltage is 3-10V. The moisture sensor outputs are: 1. Analog output 0-5V 2. Digital output 5V high, 0V low. I’m using the digital output. When I connect the relay to the output, the voltage drops and I get 0V on the output (as if the sensor is full of moisture).
Original message (Croatian)
Kontrolni napon releja je 3-10V, a izlazi iz senzora vlage su: 1. Analogni izlaz 0-5V2. Digitalni izlaz 5V high,0 V lowJa naravno koristim digitalni izlaz. Kada spojim relej na izlaz pada napon na senzoru te dobivam 0V na izlazu ( kao da je senzor pun vlage)
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Soldered Support:
The digital output from the module is from the LM393 voltage comparator: http://www.ti.com/lit/ds/symlink/lm393-n.pdf
Your SSR requires 15mA input current to activate (which is definitely more at peak), and the LM393 cannot provide this.
You need to place a transistor between the digital output of the LM393 and the input of the SSR relay. A regular NPN/PNP transistor will be sufficient (the choice of NPN or PNP depends on how you activate the SSR). Here is an example for a regular relay with LM393, but the same principle applies to SSR: http://i.stack.imgur.com/bvfib.png
Original message (Croatian)
digitalni izlaz iz modula daje LM393 komparator napona: http://www.ti.com/lit/ds/symlink/lm393-n.pdf
Vaš SSR traži 15mA ulazne struje da bi se aktivirao(što je u peak-u sigurno i više), a to LM393 ne može dati.
Trebate između digitalnog izlaza LM393 i ulaza u SSR relej staviti trazistor. Običan NPN/PNP tranzistor će biti dovoljan(odabir NPN i PNP ovisi o načinu na kojega aktivirate SSR). Evo primjera za običan relej i LM393, ali isti princip vrijedi i za SSR: http://i.stack.imgur.com/bvfib.png
