Zone & EOL connections

[richard]

what does normal mean?

the sensor is a labled NO so that means sensor is open when magnet is away... and closes when magnet is near ?
correct ? (that is the type I have on site)

For a magnetic contact, "Normally Open" would indicate that it is open when the magnet is near and closed when the magnet is away. If that really is what you have, then your original wiring diagram at the top is correct, but you need to make sure the elk is configured for an open loop and not a closed loop. This is a less common configuration for residential alarms, however, when configured with the EOL resistor, it would be just as secure as a closed loop zone.

The "Normal" state is when the door is secure and the magnet is near the sensor.

-daytime monitoring I thought was monitored wiring, and that was a good thing for a way to know if wiring is compromized in any panel state. it would indicate a current tamper which circuit / sensor being open or closed. (and panel is not in any armed state)

Does 3 state wiring work to monitor the wiring all the time, is that what it is used for?

I think of what you're refering to as supervised wiring and it would be monitored by your panel during the day. Presumably the door would be closed most of the time, and as long as the door is closed the elk will be able to monitor the wire. If the door was open and the wire was damaged the elk wouldn't know immediately, but once the door was closed again, then it would know.

The three states are Open, Closed, and Tamper, however, it can only detect the tamper state when the zone would otherwise be secure.

Brett

makes sense ... I probably need to use in the future NC sensors with series 2200 ohm resistors. ( I must have crossed 2.2 K and 22K incorrectly in the past posts)

 

[richard]

what does normal mean?

the sensor is a labled NO so that means sensor is open when magnet is away... and closes when magnet is near ?
correct ? (that is the type I have on site)

For a magnetic contact, "Normally Open" would indicate that it is open when the magnet is near and closed when the magnet is away. If that really is what you have, then your original wiring diagram at the top is correct, but you need to make sure the elk is configured for an open loop and not a closed loop. This is a less common configuration for residential alarms, however, when configured with the EOL resistor, it would be just as secure as a closed loop zone.

The "Normal" state is when the door is secure and the magnet is near the sensor.

-daytime monitoring I thought was monitored wiring, and that was a good thing for a way to know if wiring is compromized in any panel state. it would indicate a current tamper which circuit / sensor being open or closed. (and panel is not in any armed state)

Does 3 state wiring work to monitor the wiring all the time, is that what it is used for?

I think of what you're refering to as supervised wiring and it would be monitored by your panel during the day. Presumably the door would be closed most of the time, and as long as the door is closed the elk will be able to monitor the wire. If the door was open and the wire was damaged the elk wouldn't know immediately, but once the door was closed again, then it would know.

The three states are Open, Closed, and Tamper, however, it can only detect the tamper state when the zone would otherwise be secure.

Brett

makes sense ... I probably need to use in the future NC sensors with series 2200 ohm resistors. ( I must have crossed 2.2 K and 22K incorrectly in the past posts)

Update and reply for the good of the order.

Spoke to both Elk and GRI today to sort this out. Per their technical departments; a NO refers to the state with no magnet near the sensor . ( this has been stated a few times) but this addition ...."when a NO sensor in in the zone wiring and a resistor is connected from one side the (zone number and the other the -) the circuit see the resistor as a series resistor since the NO sensor is open as default....when the NO is closed it is not in series then , in effect it is not in the circuit"

Finally wrapped my understanding around this and it works. So zone sees 2200 ohm and about 7.1 volts when NO sensor is open and zone sees short or about 13+ volts when clossed.

Also thanks to all who contributed in my discovery.