Biamp Vocia GPIO-1 Manual Del Operador página 5

GPIO-1 Manual
circuit, a terminating resistor must be fitted between each Input and Isolated Ground at the far end of
the circuit being sensed. The Inputs will sense open circuits on the line between its input and the
terminating resistor. Shorts to Isolated Ground are sensed across the entire line being monitored. A
6k8Ω resistor should be used for each input. If a monitoring fault is detected on any input the logic state
or transitions on that input will be ignored until the fault is cleared. High Range – Monitored inputs
require a low to high transition to enable the input (transition direction not configurable).
Output Connectors
Sixteen parallel outputs are provided on the GPIO-1 as well as Isolated and Chassis Ground connections.
Each output is able to accept either an external positive voltage between 4 and 30V or use the 24V DC
100mA reference voltage provided on the unit. The 24V DC supply for use with the Aux Power port is not
provided with the unit and will need to be sourced locally. Outputs will be monitored for short to ground,
short to supply and if High Range - Monitored is being used, open circuit conditions will be monitored as
well. Consideration should be given to the state of the output when network connectivity is lost. A Voltage
Monitor (VM) input is provided in order that a short to supply reference voltage is incorporated in output
Fault monitoring. A voltage of between 4 - 30V is required by the VM input in order for the outputs to
operate.
If the GPIO-1 Outputs are using a High Range Monitored type of circuit the VM input must match or be
greater than the highest Output Voltage being used. If a higher Voltage is seen on the Outputs compared
to the VM Input a Short to Supply fault will be indicated.
The VM Input must always be connected to the 24V supply on Pin 23 or if an external supply is used the supply voltage should be
Auxiliary Power
The GPIO-1 will be capable of operation from two power supply types - PoE and 24V DC. Any or all
power sources may be connected concurrently. Loss or return of any power source will not result in
interruption to operation. PoE power has priority over 24V DC when both sources are connected. Fault
monitoring of each Power Supply input is enabled by default. The Vocia software allows monitoring to be
enabled or disabled on each power supply.
If PoE Power is to be used an 802.3af Class 3 or 802.3at Type 1, Class 3, compliant PoE switch or mid-
span adapter is required to either or both Ethernet ports.
When power is present at either or both of the 24V Aux power inputs the adjacent green power LED
indicator will illuminate. When PoE power is present at either or both of the Ethernet ports the adjacent
green power LED indicator will illuminate.
Due to potential energy hazard, connections to the Auxiliary Power DC inputs must be made by a qualified electrician or other
3
NOTE
connected to the VM input.
CAUTION
qualified person as required to conform with all local codes.