Trend IQ3 Relay Ouptus
Trend IQ3 Relay Ouptus
(OP)
Hi folks, I'm new here, first post.
I'm installing a Trend IQ3, and have set it to close two of the relay outputs based on a time clock (simple stuff I know). However, this doesn't seem to actually close the relay output? 'SET' thinks its shut, the IQ3 thinks its shut and the LED comes on, but if you measure the pin outs you just get 12V (the led power?)
Any Thoughts?
I'm installing a Trend IQ3, and have set it to close two of the relay outputs based on a time clock (simple stuff I know). However, this doesn't seem to actually close the relay output? 'SET' thinks its shut, the IQ3 thinks its shut and the LED comes on, but if you measure the pin outs you just get 12V (the led power?)
Any Thoughts?





RE: Trend IQ3 Relay Ouptus
Which model number your relay board is
Which pins on that board you are measuring
Which LED you are looking at
That will be a start to answering your question. I have some IQ3 experience, but I can't visualize from what you posted.
If you are reading a voltage on a relay output, it must be coming from outside the Trend I/O board. Relay outputs are isolated (dry contact).
Best to you,
Goober Dave
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RE: Trend IQ3 Relay Ouptus
I'm measuring between 35 and 36, shows an open circuit, then 12V DC when the LED comes on (when the relay output is supposed to be closed)
RE: Trend IQ3 Relay Ouptus
Bill
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Jimmy Carter
RE: Trend IQ3 Relay Ouptus
Best to you,
Goober Dave
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RE: Trend IQ3 Relay Ouptus
IQ3 analogs are 0-10V. The P is for external power to the output, 0 is signal common, and the center terminal is the voltage signal. I don't know why it would read 12V instead of 10V...
Best to you,
Goober Dave
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RE: Trend IQ3 Relay Ouptus
RE: Trend IQ3 Relay Ouptus
http://cpc.farnell.com/unbranded/vhlr/very-handy-l...
Switches from 1-10V and the coil draws 18ma
It can switch 230V, so will basically convert my analogue output into a digital one.
RE: Trend IQ3 Relay Ouptus
The analog outputs are current-limited (20 mA), it's not a good idea to put inductive loads on them, and Trend says no. Those outputs are designed for high-impedance loads (10+ kΩ is common).
See item 9 on page 5 of the attachment. The lower left corner says it all.
You need something designed for the purpose of switching a relay based on a low-power voltage.
Disclosure: I am a consultant for Kele, and was their Chief Engineer for many years.
These will work:
http://www.kele.com/transducers/ucs-121.aspx
http://workaci.com/products/aar-analog-input-2-adj...
http://www.wago.com/wagoweb/documentation/857/eng_...
Don't forget your manual: HERE
Best to you,
Goober Dave
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RE: Trend IQ3 Relay Ouptus
http://www.farnell.com/datasheets/1513637.pdf
RE: Trend IQ3 Relay Ouptus
Best to you,
Goober Dave
Haven't see the forum policies? Do so now: Forum Policies
RE: Trend IQ3 Relay Ouptus