Wiring schematic - help

[justshapes]

I have been told that the Model SYL-4352 PID could activate two SSR's.

I have questions as to the line input to the SSR. Is the L1 a required line input (see attached schematic)

Or does it really matter There were no instructions enclosed with the SSR's..

[SCOTTRODS]

Looks pretty cut and dried to me. Show SSR's maybe, so we can see what you're seeing? I'd expect the SSR's to have their own schematic so you'd know what to wire up.

From the drawing shown, Yes, an L1 is important. nIf you trace the flow from L1 you'll see how there has to be one to form the circuit....

Welcome to basic electricity, please have a seat in a chair close to the front of the class...... (Just funnin' a little....)

I'm sure the teacher/s will be along shortly.

[ed_denu]

The ability of a PID to drive multiple ssr's is based on the load characteristics of the PID and SSR's being used. The PID outputs driving the SSR(s) will have a maximum load rating. In the case of my PID it's 40ma. So as long as the SSR input current requirements combined do not exceed 40ma then it could handle 2 ssrs.

As for the L1 I'm not real sure what the question is. The SSR is just a relay(switch) capable of supporting much higher loads then the PID itself could manage. The T1 in this case is the supply side of the SSR output. The L1 is the load side going to the elements. Without the L1 connection the elements would never be energized.

The SSR should have come with details of it's input voltage requirements and load carrying capabilities. As for wiring the SSR there aren't many options. The (2) input terminals accept voltage from the controller or PID(usually polarity sensitive) and the (2) load side terminals get (1) connected to the source and (1) connected to the load(elements).

[justshapes]

Just so everyone is up to date on this, following is the reply and the message that I sent to Suyi Liu at Auber Instruments

- Show quoted text -
On Sat, Sep 6, 2008 at 9:05 PM, Michael McCoy <JustShapes@verizon.net> wrote:

Dear: Suyi,

Please review the attached wiring schematic and advise...

Per our conversation prior to my purchase last week, you told me that the Model SYL-4352 PID could activate two SSR's.

I have questions as to the line input to the SSR. Is the L1 a required line input

Or does it really matter There were no instructions enclosed.

You are the expert...

Our plan is to have two 12' ovens with two PID's, each. One for the front area and another for the rear of the ovens, both ends using the same basic wiring schematic as attached.

Your suggestions and expertise would be gratefully appreciated and please discard the previous email message...

Thanks,

Mike


Hello Mike,
There is no diffrence between the L1 and T1 of the SSR.
The schematic is fine. However, The fuse design is not correct. If you want protect the controller, a 0.5 A fuse should be used. The 15 A fuse should be installed to the heater loop.
Best Regards,
Suyi


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Suyi Liu
Auber Instruments
auberins.com, Your number one source for precision instruments