Encom Harmony IP I/O8 User Manual page 38

2. Setting Up an External Status Confirmation with HARMONY IP I/O8
The following application is an example of using a HARMONY IP I/O8 configured for External Confirmation.
The diagram below shows the layout:
Common Ground
for all equipment
inside cabinet
This system operates in the following manner:
Ø The switch at the HARMONY IP I/O8 ( Master) is switched ON (closed).
Ø Input 1 of the Master is now connected to ground through the switch and is activated. This status
change is transmitted to the Remote Radio.
Ø Output 1 of Remote Radio is activated.
Ø The relay is activated; both sets of its contacts switch. The set of contacts with no connections shown
would be connected to the end device. The other set of contacts ties Input 1 of the Remote Radio to
ground.
Ø Input 1 of the Remote Radio is now connected to ground through the relay contacts and is
activated. This status change is transmitted to the Master.
Ø Output 1 of the Master is activated, which turns the LED ON.
Ø This setup confirms the Remote Radio received the status change and it indicates the status of the
device connected to the Remote Radio.
Master Site
HARMONY IP I/O8
INPUTS OUTPUTS
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
12V LED
Harmony IP I/O8 Network Monitoring & Control User Manual
Remote #1 Site
HARMONY IP I/O8
INPUTS OUTPUTS
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8
34
Common Ground
for all equipment
inside cabinet