BSS Audio Soundweb London BLU-806DA handleiding

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Handleiding

Logic Outputs

There are 6 logic outputs, also known as “General Purpose Outputs” or

“GPO”. They are used to control LED’s or relays. The logic output can source

10mA at 5V DC, or sink 60mA up to 50V DC�

A high sensitivity relay (such as a reed relay) can be driven by connecting

multiple logic outputs in parallel� In the diagram to the right, this arrangement

will develop 4V across a 500-Ohm coil, providing that all four outputs are

activated simultaneously�

LED

relay

When sourcing from the Logic Output, an LED connected

between one output (Anode, A) and common (Cathode,

K) will illuminate when the logic output is activated,

without requiring any external current limiting resistor (the

Soundweb London contains an internal 440 Ohm resistor)�

Port 1

Current source, 10mA max

LED

LD5

For higher current reed type relays you must use the Logic Output

to sink current using an external power supply�

Port 1

Current sink, 60mA max

External supplyVCC

Opto Output

In addition to the six standard logic outputs, there is

an isolated output, which fails safe (open circuit) if the

unit becomes faulty�

relay

+supply voltage

ground

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