Black Box ServSensor JR EME102A, Руководство пользователя, Страница: 41 / 135

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CONTENTS
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Sensor type - open/closed contact switch
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Power source: powered by the ServSensor JR. No additional
power needed.
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ServSensor JR autodetects the presence of the voltage sensor
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Measurement rate - multiple readings every second
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Up to 8 sensors on the ServSensor JR
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Full Autosense including disconnect alarm
Configuring the Dry Contact Sensor
Since all of BLACK BOX's intelligent sensors are configured similarly
not every field is described below. The descriptions below refer to the
fields that are special to the Dry contact sensor.
For a general description about configuring all sensors including
information regarding common configuration parameters please see the
Installing and Configuring Sensors page.
Direction: The Switch Direction can be either Input or Output. When
set as an Input, the sensor will report its status as “normal” ,
“highCritical” , or “lowCritical” . The status is normal if the
“NormalState” matches the current value applied to the sensor. For
example if the “NormalState” is high and the Input to the sensor is
high then the status is normal. The input voltage should be limited to 0
to 5 volts in order to protect the sensor.
If the Direction of the sensor is Output, the sensor can be used to drive
external equipment.
OutputLevel: The Switch “OutputLevel” can be either High/+5 Volts
or Low/GND. When set to a High, the output value of 5 volts will be
applied to the switch. When set to a Low the
“OutputLevel” will
depend upon the value of Direction. If Direction is set to Output and
the
“OutputLevel” is set to low, the Switch will source current in order