Encom Harmony IP I/O8, Руководство пользователя

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Harmony IP I/O8 Network Monitoring & Control User Manual
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HARMONY IP I/O8 OUTPUTS
The HARMONY IP I/O8 is configured with a 9-position quick-connect barrier block for connection of 8
outputs.
The HARMONY IP I/O8 Outputs are Open Collector Outputs with the following specifications:
Ø
Maximum voltage: 30 VDC
Ø Maximum sink current per output: 250 mA
The HARMONY IP I/O8 Open Collector Outputs are pulled low (“switched” to ground) when activated.
1. Using a Traffic Controller for an output connection with the HARMONY IP I/O8
The following application shows you how to connect a Traffic Controller to the output of the HARMONY IP
I/O8.
A Traffic Controller may require a Voltage Level change on its inputs in order for activation to occur. A pull
up resistor is required on the input(s) of the equipment that requires a Voltage Level change on its Inputs.
If your equipment is not configured with internal pull up resistors on its inputs , they must be installed as
shown below:
In the above diagram, when the HARMONY IP I/O8 Output is not activated, the Controller Input is pulled
up to wall cube supply voltage through the pull up resistor. The Controller Input is at a high level .
When the HARMONY IP I/O8 Output is activated, it is pulled to ground and the Controller Input is also pulled
to ground. The Controller Input is at a low level .
Refer to the User Manual for your Traffic Controller or other equipment to determine if it requires a
Voltage Level Change and if it is configured with a pull up resistor.
INPUTS
1 2 3 4 5 6 7 8
OUTPUTS
1 2 3 4 5 6 7 8
HARMONY IP I/O8
Input
Traffic
Controller
10K
Pull Up
Resistor
Wall cube come
with the radio
You must connect your equipment
signal ground to the HARMONY IP
I/O8 ground in order to ensure there
is a common ground point and at the
same level.
The HARMONY IP I/O8 Outputs do
not provide a power source for
your equipment.