Vega NB-11 / User Manual
5
Revision 03 – 08 October 2020
1 DESCRIPTION AND OPERATION
DEVICE DESCRIPTION
Vega NB-11 pulse counter is designed for counting of pulses incoming to 4
independent inputs, further accumulating and transmitting of this information in NB-IoT
network.
In addition, Vega NB-11 can be used as a security device – two additional inputs
operate in security mode, there is also Hall sensor.
The pulse counter can be used for any utilities’ meters and industrial equipment with
pulse output of herkon type or open-drain type.
Equipment with NAMUR pulse output is not supported
De-bouncing logics with 5 msec time constant is integrated in the pulse counter. The
pulse counting is carried out for frequencies up to 200 Hz.
The counter is powered by a 6400 mAh built-in battery.
COMUNICATION AND DATA COLLECTION ALGORITHM
The readings collecting from the meter with a configurable period 5, 15, 30 minutes, 1,
6, 12 or 24 hours. The readings stored in the device memory and transmitting during the next
communication session with the NB-IoT network.
The adjustable data transfer period can be equal to 5, 15, 30 minutes, 1, 6, 12 and 24
hours. Data transferring in random point in time during set period. At the next communication
session, the device starts sending accumulated packets with readings, from the earliest to the
latest.
The device operates with confirmation all the time and send the next packet only after
receiving a confirmation of the delivery of the previous one. If such confirmation was not
received, NB-11 completes the communication session until the next one according to the
schedule. Herewith, the device continues to collect data according to the data collection
period and store it in memory. Non-transmitted packets remain in the device memory until
the next communication session.
The internal clock is set automatically when device connected to the "Vega NB-IoT
Configurator" via USB.
