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cnReach N500 User Guide
Technical Reference
phn-4673_002v000 (March 2018)
3-32
Digital Output
The digital output is used to drive solenoids, latches, valves, pumps, lamps, etc. In the OFF/OPEN state
digital outputs present a high impedance to the external equipment and prevent current from flowing.
The high impedance when OFF/OPEN should not energize common equipment. In the ON/CLOSED
state the digital output presents a low impedance to the external equipment and allows current to flow.
This energized the external equipment. In the event a dangerous condition is detected in the digital
output, like too much current, the digital output will enter protection and disable the output. The user
can choose whether the digital output should clear the ON/CLOSED command or to retry the command
when safe to do so. Users should always follow good grounding practices and connect one ground wire
for every digital output used.
•
Used to drive solenoids, latches, valves, pumps, lamps, etc.
•
In the OFF/OPEN state digital outputs present a high impedance to the external equipment and
prevent current from flowing.
•
The high impedance when OFF/OPEN should not energize common equipment. In the
ON/CLOSED state the digital output presents a low impedance to the external equipment and
allows current to flow.
•
In the event a dangerous condition is detected in the digital output, (such as too much current),
the digital output will enter protection and disable the output.
•
The user can choose whether the digital output should clear the ON/CLOSED command or to
retry the command when safe to do so.
•
The digital output with 2 Amp switch to ground is implemented
Digital Output with 2 Amp V+ Switch to Ground
The digital output with 2 Amp switch to ground is implemented with a solid state NMOS transistor. The
impedance when OFF/OPEN is roughly 62 kiloOhms to ground. The impedance when ON/CLOSED is
roughly 50 milliOhms to ground. The current flowing through the equipment is measured and circuitry
protection turns on above 2 Amps.
Содержание cnReach N500
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