- starmanjMemberMay 28, 2012 at 12:20 amPost count: 6
The EZIO8SA manual says this:
Inputs I1 – I4 can be used in a
way that the signal source is totally isolated from the
EZIO8SA, as may be the requirement for certain alarm
panel monitoring. In this case, the input must provide a
voltage between 3 and 30 VDC, connected between the
positive (Ix+) and negative (I1– or I2-) terminals. If
isolation is not required, these inputs can easily be
connected to “dry” contact closures such as those from
external relays, proximity detectors or door closure
sensors. In this case, connect the positive (I1+ or I2+)
terminal to the +12V terminal, and the contact closure
between the negative (I1- or I2-) terminal and the GND terminal.
I have DSC alarm panel, with a 4-wire motion detector. Two leads are power, two leads are “normally closed” with resistance of 90 ohms read at the alarm panel. There are no resistors in-line with the motion detectors. Am I correct to treat the motion detectors as “dry” contact closures? The last sentence above is confusing– do I run a line directly from say DI1+ to the +12v terminal on the EZIO, and then take the two contact leads and screw one into DI1- and the OTHER lead to the GND terminal? I’m not sure what that would accomplish. When the motion sensor triggers, it closes the connection, therefore connecting DI1- right to GND. How will that trigger the EZIO?
StarmanjJustinMemberJune 7, 2012 at 7:16 pmPost count: 146
You mentioned that the two leads are “normally closed”, but then say that when the motion sensor senses motion it closes the connection…which would be considered normally open. Do you know if this is a dry contact closure?
The EZIO6I requires 3-30 volts to trigger an opto-isolated input to send out an INSTEON command. Being that you want to ensure that you keep the 90 ohm resistance between the two leads so the sensor doesn’t look like it’s tripped when it’s not, how to connect the motion sensor to the EZIO6I and then to the alarm panel could be a challenge.
If you could post a link to the DSC manual and let us know exactly what you’re trying to accomplish, we might be able to help further.
Thanks!grif091MemberJune 7, 2012 at 10:10 pmPost count: 1001
This was worked out on the ISY forum. Use the link below for “How To”..
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