Applications; Harmony Ip I/O8 Inputs - Encom Harmony IP I/O8 User Manual

Harmony IP I/O8 Network Monitoring & Control User Manual

APPLICATIONS

HARMONY IP I/O8 INPUTS

The HARMONY IP I/O8 is configured with a 9-position quick-connect barrier block for connection of up to 8
inputs.
An Input is activated when it is connected to DC Ground using a switch or relay contacts.
An Input can also be activated when pulled low by an Open Collector output.
Inputs applied to the HARMONY IP I/O8 can be 'dry' contacts (no voltage applied). For example, a switch or
relay.
1. Using Input Switches with your HARMONY IP I/O8
The following application outlines the connection of 4 switches to the HARMONY IP I/O8 Inputs. Turning on
a switch closes the contacts which connects the Input to ground.
For example, when the switch that is connected to Input 1 is physically turned ON, Input 1 of the HARMONY
IP I/O8 is tied to ground and activated.
HARMONY IP I/O8
INPUTS
1 2 3 4 5 6 7 8
27
OUTPUTS
1 2 3 4 5 6 7 8
Common Ground
for all equipment
inside cabinet