SSD voltage and limit switch

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neo
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SSD voltage and limit switch

Post by neo »

First, there are two voltages in the documentation:

Page 1
SSR activated voltage: open circuit: 6V; short circuit: 40mA.

Page 3
2: Relay J1 and J2 as alarm outputs; SSR PID output 8V SSR signal. Target: SV

Is this a type-o or am I missing something.

Second, if I need to use a reed/limit switch, I do not see a feedback circuit. I suppose I should wire it in parallel with the SSR or relay?
Tech_Marco
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Joined: Mon Jun 15, 2009 3:00 pm
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Re: SSD voltage and limit switch

Post by Tech_Marco »

It really doesn't matter, 6V or 8V. Open circuit could be 8V but in closed circuit, it may dropped to 5~6V
SSR take 3V~36V so it is not really a concern in this scenario

Sorry, I have no experience to the application you're asking. I'm not an expert in this case


Marco
richiem
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Re: SSD voltage and limit switch

Post by richiem »

@neo -- RE question 2:
The mechanical relays J1 and J2 are regular electro-mechanical relays actuated by various programmed functions in the controller -- there is no built-in power source connected to them, so any thing controlled by closing or opening one of the relays needs an appropriate power source as well.

Please do not connect anything in parallel with the SSD control output unless it is a relatively high impedance load so as not to add an extra current load to the output to the SSD.

If you would like additional comments or help about your particular application, explain what you need to accomplish, and someone here will aid you.

Best regards
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