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?
Help?
Starmanj
