Make Gpio Connections - Bose Professional ControlSpace EX-1280C Guía De Instalación Y Funcionamiento

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Installation and Operation

7. Make GPIO Connections

Five control inputs (GPI) and five control outputs (GPO) are available on the rear panel of the EX-1280C. Use
these to interface the EX-1280C with external control hardware.
General Purpose Inputs
General-purpose control input ports are used to connect external hardware such as potentiometers (to control
levels or gains) and switches (to set logic states). Use ControlSpace Designer software to easily assign functions
to these external controls.
Using Switches
Both toggle switches and pushbuttons can be
used with control inputs. Each input terminal
is tied to an internal pull-up resistor (2k ohm)
so that external switches can be wired directly
from input to ground
General Purpose Outputs
Current Source Devices
Some devices such as LEDs and low-current
relays can be powered directly from control
outputs. A maximum source current of 10 mA
is available.
Source Limits: 8 VDC, 10 mA (max.)
20 - Installation and Operation Guide
Using Potentiometers
10k ohm potentiometers can be connected
and associated with control gain blocks in a
system design. Inputs are compatible (through
ControlSpace Designer software) with linear
taper potentiometers wired for minimum
resistance at the full-clockwise position or at
the full-counterclockwise position.
Current Sink Devices
Devices that require more current than is
available from a current-source configuration
can use control outputs to sink up to 100 mA
when used with external power supplies. Use
proper precautions when driving inductive
loads.
Sink Limits: 100 mA (max.). External supplies
must be ≤ 24 VDC.
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