NOVUS AUTOMATION
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7.
DIGITAL OUTPUT
The
LogBox-BLE
has a PNP-type Digital Output which when triggered places the
voltage from the external source to the Digital Output pin. The
LogBox-BLE
Digital Output can be disabled
or configured to operate in one of the modes described below:
●
Auxiliary Electronic Switch: Used to control the power supply of external instruments during analog channel readings.
Ex.: 4-20 mA transmitters can be powered by the digital output pin, so that they can only be turned on at the time they are read, thus, saving
power from
LogBox-BLE
external power supply, which can be a 12 V battery. In the Auxiliary Electronic Switch mode, it is necessary to set how
long before each acquisition the digital output must be triggered.
○
Drive Time: Set, in seconds, in the Auxiliary Electronic Switch mode, how long before each acquisition the Digital Output must be triggered.
It is deactivated as soon as the acquisition is complete. This time cannot be longer than the lowest acquisition range (Instantaneous,
Average = 1/10 of the instantaneous, Display Interval). If equal to 0, the Auxiliary Electronic Switch will be enabled at the exact moment of
an acquisition. If greater than or equal to the lowest acquisition interval, the Auxiliary Electronic Switch will always be enabled.
●
Alarm Status: Used to track the current general alarm status. If any channel is in an alarm situation, the Digital Output is triggered. If no channel
is set to alarm, the Digital Output is disabled.