Vega Absolute VEGA SI-22 User manual

www.vega-absolute.ru
Pulse Counter
VEGA SI-22
User manual
DOCUMENT REVISION
FIRMWARE VERSION
11 2.3

Vega SI-22 / User Manual
2 Revision 11 of 11 August 2021
CONTENTS
INTRODUCTION............................................................................................................................................................................3
1 DEVICE PURPOSE AND OPERATION PRINCIPAL.................................................................................................................4
Device PURPOSE .......................................................................................................................................................................4
oPERATION algorithm..............................................................................................................................................................4
Functional ...................................................................................................................................................................................6
Marking........................................................................................................................................................................................6
2 SPECIFICATION ..........................................................................................................................................................................7
Device specification..................................................................................................................................................................7
Default device settings .............................................................................................................................................................8
3 OPERATION.................................................................................................................................................................................9
Device appearance....................................................................................................................................................................9
Contacts description...............................................................................................................................................................10
Indication ..................................................................................................................................................................................12
Mounting Recomendations...................................................................................................................................................13
4 COMMUNICATION PROTOCOL – VERSION 2.0 ...............................................................................................................15
Vega SI-22 pulse counter transmits the following types of packets ............................................................................15
1. Packet with current readings ..................................................................................................................................15
2. Packet with time correction request......................................................................................................................16
3. Settings packet...........................................................................................................................................................16
VEGA SI-22 pulse counter receives packets of the following types .............................................................................17
1. Real-time clock adjustment.....................................................................................................................................17
2. Packet with request of settings...............................................................................................................................17
3. Packet with settings ..................................................................................................................................................17
5 STORAGE AND TRANSPORTATION REQUIREMENTS ......................................................................................................19
6 CONTENT OF THE PACKAGE ................................................................................................................................................20
7 WARRANTY ................................................................................................................................................................................21

Vega SI-22 / User Manual
3
Revision 11 of 11 August 2021
INTRODUCTION
This manual is designated for Vega SI-22 pulse counter (hereinafter – the counter)
manufactured by Vega-Absolute OOO and provides information on powering and activation
procedure, control commands and functions of the counter.
This manual is targeted at specialists familiar with installation work fundamentals of
electronic and electrical equipment.
Vega-Absolute OOO reserves the right to make changes to the manual related to the
improvement of equipment and software, as well as to eliminate typos and inaccuracies,
without prior notice.

Vega SI-22 / User Manual
4 Revision 11 of 11 August 2021
1 DEVICE PURPOSE AND OPERATION PRINCIPAL
DEVICE PURPOSE
Vega SI-22 pulse counter is designed for counting of pulses incoming to 4 independent
inputs, further accumulating and transmitting of this information in the LoRaWAN®network.
In addition, Vega SI-22 can be used as a security device - pulse inputs can be
configured as security inputs.
The pulse counter can check the specified temperature range. When configuring the
device, you can set the low and high thresholds for permissible temperature values. When the
temperature value goes beyond the range, the modem starts an extraordinary
communication session. The data collection period for operation within the temperature
range and outside is configurable separately.
The pulse counter can be used for any utilities’ meters and industrial equipment with
pulse output of herkon type or open-drain type contact.
Equipment with NAMUR pulse output is not supported
Vega SI-22 has ability to connect an external temperature sensor for taking
temperature readings from objects which require such control.
The counter is powered by a 3600 mAh battery.
The device is powered by a non-rechargeable lithium-thionyl chloride
(LiSOCl2) battery
Attempts to charge the battery may result in fire
OPERATION ALGORITHM
Vega SI-22 operates in modes listed below:
“Storage” – is a mode for storing and transporting. In this mode the device does not
communicate regularly with the network.
“Active” – is a main mode of device operation.
Before start using you need to switch the device out of “Storage” mode.
Vega SI-22 supports two activation methods in the LoRaWAN®network - ABP and
OTAA. Select one of the methods via the “Vega LoRaWAN Configurator” application (see
“User Manual” on the program).

Vega SI-22 / User Manual
5
Revision 11 of 11 August 2021
ABP method. After pressing the start button, the device immediately starts working in
the "Active" mode.
OTAA method. After pressing the start button, the device makes three attempts to
connect to the network within the set frequency plan. After the activation in the LoRaWAN®
network is confirmed, the device sends a signal (LED flashing for 5 seconds) and switches to
the "Active" mode. If all attempts fail, the device will continue to accumulate data and will
attempt to connect to the network every 6 hours.
Hold the start button pressed (min. 5 seconds) to switch the device from the "Active"
mode back to the "Storage" mode.
When switching to the "Storage" mode, all readings from the pulse inputs
accumulated in the device memory are reset
The device forms the data packet with current state with a configurable period from 5
minutes to 24 hours. The packets stored in the device memory and transmitting during the
next communication session with the LoRaWAN®network.
Examples
If the data collection period is set to 24 hours the packet is formed at 00.00 on the
internal clock of the device
If the data collection period is 12 hours then at 00.00 and at 12.00, and so on.
Data collection period when measurements are out of specified temperature range set
independently and may be equal from 5 minutes to 24 hours.
The adjustable data transfer period can be from 5 minutes to 24 hours. When
beginning of communication session, the device starts sending packets with readings from
the earliest packet. The time of data transmitting cannot be specified, it’s defined in random
way for every device in chosen period of transmission from the moment of connection to the
network.
Example
Transmission period is 30 minutes, and device was started at 16:40 by the internal
device clock. In random way the device calculate data transmitting time and set it at 16:41 in
the half-hour period from 16:40 to 17:10. Thus, packets from this device will transmit at 16:41,
at 17:11, at 17:41, at 18:11 and so on every 30 minutes by the internal device clock.
When measurements are out of specified temperature range the communication
period still the same if parameter “Immediately send data when temperature is out of range” is
not active. If that parameter is active, then the alarm message will be formed and sent during
2 minutes after the moment of temperature measurements become out of specified range.

Vega SI-22 / User Manual
6 Revision 11 of 11 August 2021
Every following message, which will form according to the data collection period, also will
have sent immediately until the temperature measurements are back in range.
The internal clock is set automatically when you connect to the device through USB,
also can be adjust via LoRaWAN®network.
FUNCTIONAL
Vega SI-22 pulse counter is A class device (LoRaWAN®classification) and has the
following features:
ADR support (Adaptive Data Rate)
Sending of confirmed packets (configurable)
Two operating modes: "Active" and "Storage"
Inputs can be switched to «security» mode for connection to external leakage
and safety sensors, etc.
Ability to connect an external temperature sensor
Unscheduled sending of an alarm packet when the temperature goes out the
specified range
The ability to set a shortened data collection interval for the case when the
measured temperature values go out the specified temperature range
Time referencing of readings by internal clock
Communication in case of security inputs actuation
Charge measuring of the built-in battery (%)
MARKING
Device marked with sticker that contain the next information:
Device model;
DevEUI;
Month and year of manufacture;
Sticker located in three places – on device case, in factory certificate and on the packing
box.
Besides, there is an additional sticker located on the packing box and contains:
Information about firmware version;
QR-code containing DevEUI and keys for device registration in network via
OTAA method.

Vega SI-22 / User Manual
7
Revision 11 of 11 August 2021
2 SPECIFICATION
DEVICE SPECIFICATION
MAIN
Double-contact digital inputs up to 4
Maximum input frequency 200 Hz
Security inputs up to 4
USB-port micro-USB, type B
Operating temperatures -40…+85 °С
Ability to connect an external temperature sensor yes
LORAWAN®
LoRaWAN®class A
Quantity of LoRaWAN®channels 16
Frequency plans supported by default RU868, EU868, KZ865, custom
(EU868 based)
Frequency plans available as order option
IN865, AS923, AU915, KR920, US915
Activation type ABP or OTAA
Communication period 5, 15, 30 minutes, 1, 6, 12 or 24 hours
Data collection period 5, 15, 30 minutes, 1, 6, 12 or 24 hours
Memory amount for storing packets 200 packets
Type of the LoRa antenna external, SMA-F connector
Sensitivity -138 dBm
Radio coverage in restrained urban conditions up to 5 km
Radio coverage within line of sight up to 15 km
Transmitter power by default 25 mW (configurable)
Maximum transmitter power 100 mW
POWER
Battery SAFT LS 17500 3600 mAh
Calculated number of packets sent by the device
with default settings
80 000
CASE
Housing dimensions (without cable gland and SMA-
connector), no more than
96 х 96 х 50 mm
Ingress protection rating IP65
PACKAGE
Dimensions
165 х 118 х 57 mm
Weight 0.365 kg

Vega SI-22 / User Manual
8 Revision 11 of 11 August 2021
DEFAULT DEVICE SETTINGS
PARAMETER
VALUE
Frequency plan RU868
Activation type OTAA
Adaptive Data Rate ON
Confirmed Uplinks OFF
Rx 1 Delay
1 second
Join Accept Delay 5 seconds
Uplink number of transmissions 1
Data rate DR0
Power 14 dBm
Communication period 24 hours
Data collection period 24 hours
Data collection period when temperature is
out of range
1 hour
Time zone UTC +00:00
Inputs operate in mode
pulse
For changing the device settings, you need to connect to it with “Vega LoRaWAN
Configurator” application. You can download app on the iotvega.com site in SOFT section as
well as User Manual for configurator. Go to the app page.

Vega SI-22 / User Manual
9
Revision 11 of 11 August 2021
3 OPERATION
DEVICE APPEARANCE
Vega SI-22 is represented in gray plastic case which has six screws and mounting for
DIN-rail. The device case is equipped with a hermetic gland of M12 size. A sealant is installed
inside the gland, ensuring compliance with the declared Ingress Protection rating of the
device case.
2 – cable gland of M12 size for installing the cables and wires with circular cross-
section with a diameter of 5...6 mm
3 – input of external antenna
1
2 3
Internal structure of cable gland

Vega SI-22 / User Manual
10 Revision 11 of 11 August 2021
All of elements for manage and indication as well as connecting contacts are placed
on the board inside the case.
4 – contacts
5 – input for connecting an external antenna
6 – LED indicator
7 – launch button
8 – USB-port
CONTACTS DESCRIPTION
When connecting a radio modem to external devices, consider the internal circuitry of
its pulse inputs shown below.
4
5
6
7
8

Vega SI-22 / User Manual
11
Revision 11 of 11 August 2021
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 pulse counter has 4 pairs of contacts and it can connect circuits with the following
types of NO contacts:
reed switch;
mechanical pushbutton;
open-drain output.
Equipment with NAMUR pulse output is not supported
Polarity effects only "open collector" circuits.
Hold the start button pressed (min. 5 seconds) to switch the device from the "Active"
mode back to the "Storage" mode.
Pulse inputs can be configured for work in the "Security" mode via the “Vega LoRaWAN
Configurator” application. In this mode, the device does not count pulses at the "Security"
input, but only monitors its status. Should the "Security" input trigger, the device is activated
and sends an alarm message to the network.
Also, there are a couple of contacts on the board for connection an external
thermistor, it is contacts «Temp.» and «Ʇ». It is necessary to configure sending parameters for
thermistor readings in the «Vega LoRaWAN Configurator» application.

Vega SI-22 / User Manual
12 Revision 11 of 11 August 2021
INDICATION
There is one red LED on the board. The indication is only used when the device is
activated in the LoRaWAN®network and when the operating modes are changed.
LED SIGNAL MEANING
Short flashings Linking to the network in progress
One long flashing
during 5 sec
The device has been successfully
connected to the network and is in
active mode
Three flashings each by
1 sec
Linking to the network has been failed
or the device switched to the
“Storage” mode
In case of connection attempt fail, the device will continue to accumulate
data and will attempt to connect to the network every 6 hours
LED on the board

Vega SI-22 / User Manual
13
Revision 11 of 11 August 2021
MOUNTING RECOMENDATIONS
To provide the stable radio between the gateway and the end device is recommended
avoiding the device installation in the places which are barriers for the radio signal getting
through like a reinforced floors and walls, a basement, an underground facilities and wells, a
metal case etc.
The necessary stage for the network deploying including a big quantity of end devices
is a radio planning work with nature experiments.
Before starting mounting work, you must make sure that the latest
firmware version is installed on the equipment
For mounting you will need:
wire stripper;
laptop.
Step by step mounting be like:
1. Setting the devices and connecting them to the network are usually carried out in
the office (see Network Deployment Manual).
2. Determination of suitable places for mounting at the object with a network tester.
3. De-energizing the connected equipment, metering devices, etc.
4. Placement the wires in the cable gland. It must be remembered that the wires must
be united in one cable of circular cross-section with diameter of 5…6 mm.
Inside the cable gland there is a sealant ensuring compliance with the
declared Ingress Protection rating of the device case. When removing the
sealant, as well as when installing wires of a different diameter or cross-
section, device performance may deteriorate until failure due to moisture
entering the case
5. Connecting all necessary wires to the SI-22 contacts.

Vega SI-22 / User Manual
14 Revision 11 of 11 August 2021
6. When the power is connected at the first time the device automatically switches to
the “Active” mode and starts registration in the network. But if the device with
connected battery has been switched to the “Storage” mode (by the pressing on the
start button more than 5 sec) then you need to press the button to start.
7. By the laptop you can make sure that the device successfully sends the data.
8. Before assembling the device, it is necessary to reset the pulses accumulated during
testing and connection by switching the device to the "Storage" mode by pressing
the button for 5 seconds.
9. Start the device by pressing launch button.
10. Assembling the device.
Location of the
launch button on
the board

Vega SI-22 / User Manual
15
Revision 11 of 11 August 2021
4 COMMUNICATION PROTOCOL – VERSION 2.0
This part describes the last version of the communication protocol for SI-22 data
exchange with LoRaWAN®network. You can see the device protocol version number in the
“Configurator” application in the “Device info” tab.
In fields consisting of several bytes, the little-endian byte order is used
VEGA SI-22 PULSE COUNTER TRANSMITS THE FOLLOWING TYPES OF PACKETS
1. Packet with current readings
Sent regularly or by event on LoRaWAN port 2.
Size in bytes
Field description
Data type
1 byte
Packet transmitting reason:
00 - Transmitting by the schedule
01 - Input 1 triggered
02 - Input 2 triggered
03 - Input 3 triggered
04 - Input 4 triggered
05 - Temperature went out of range
uint8
1 byte
Battery charge, %
uint8
4 bytes
This packet time (unixtime UTC)
uint32
2 bytes
Temperature in °С multiplied by 10
int16
4 bytes Input 1 reading (depending on the type – number of pulses or
status: 0 – open, 1 - closed)
uint32
4 bytes Input 2 reading (depending on the type – number of pulses or
status: 0 – open, 1 - closed)
uint32
4 bytes Input 3 reading (depending on the type – number of pulses or
status: 0 – open, 1 - closed)
uint32
4 bytes Input 4 reading (depending on the type – number of pulses or
status: 0 – open, 1 - closed)
uint32
1 byte Temperature is out of range («0» - no, «1» - out of range)uint8t
1 byte Low temperature threshold (from -128
°
С to +127
°
С) int8t
1 byte High temperature threshold (from -128
°
С to +127
°
С) int8t
If thermistor is not connected to the pulse counter (contacts «Therm» and
«Ʇ»), in the «Temperature» field will be sent an -1000 °C value for breakage
or fault indication
When thermistor has a short circuit, in the “Temperature” field the value -
1270 °C will transmit
The counter has internal clock and calendar; time and date on which are preset on the
factory and it may be corrected during exploitation. Forming of packets with the current
readings is going on for the time moments, which is multiple to the set data collection period:
1 hour period: the readings of the beginning of the current hour are sent;

Vega SI-22 / User Manual
16 Revision 11 of 11 August 2021
6 hours period: 00:00, 06:00, 12:00, 18:00 readings are sent;
12 hours period: 00:00, 12:00 readings are sent;
24 hours period: the readings of 00:00 of the current day are sent.
Time zone considered during collection data from an external meter.
2. Packet with time correction request
Sent every seven days on LoRaWAN port 4.
Size in bytes
Field description
Data type
1 byte
Packet type, this packet == 255
uint8
4 bytes Time of the modem at a moment of the packet transmission
(unixtime UTC)
uint32
After receiving this type of package, the application can send to modem the packet with
time correction.
3. Settings packet
Transmitting on LoRaWAN port 3 when settings request command was received, or
device was connected to the network.
Size in bytes
Field description
Data type
1 byte
Packet type, this packet == 0
uint8
2 bytes ID of parameter uint16
1 byte
Data length (len)
uint8
len bytes
Parameter value
-----
2 bytes ID of parameter uint16
1 byte Data length (len) uint8
len bytes
Parameter value
-----
… … …
2 bytes
ID of parameter
uint16
1 byte
Data length (len)
uint8
len bytes Parameter value -----

Vega SI-22 / User Manual
17
Revision 11 of 11 August 2021
VEGA SI-22 PULSE COUNTER RECEIVES PACKETS OF THE FOLLOWING TYPES
1. Real-time clock adjustment
Sent by application on LoRaWAN port 4.
Size in bytes Field description Data type
1 byte Packet type, this packet = 255 uint8
8 bytes The value in seconds for which you need to adjust the time.
Can be positive or negative
int64
2. Packet with request of settings
Sent by application on LoRaWAN port 3.
Size in bytes Field description Data type
1 byte Packet type, this packet == 1 uint8
Answering that packet, the device will send the packet with settings.
3. Packet with settings
It is identical to such packet from device.
Size in bytes Field description Data type
1 byte Packet type, this packet == 0 uint8
2 bytes ID of parameter uint16
1 byte Data length (len) uint8
len bytes Parameter value -----
2 bytes ID of parameter uint16
1 byte Data length (len) uint8
len bytes Parameter value -----
… … …
2 bytes ID of parameter uint16
1 byte Data length (len) uint8
len bytes Parameter value -----
The package with settings sent to the device may not contain all the settings supported
by the device, but only the part that needs to be changed.
Table of ID of SI-22 parameters and these possible values
ID of
parameter
Description Data
length
Possible values
4 Confirmed uplinks 1 byte 1 – confirmed
2 – unconfirmed
12 Input 1 mode 1 byte 1 – pulse
2 – guard
13
Input 2 mode
1 byte
1 – pulse

Vega SI-22 / User Manual
18 Revision 11 of 11 August 2021
2 – guard
14
Input 3 mode
1 byte
1 – pulse
2 – guard
15 Input 4 mode 1 byte 1 – pulse
2 – guard
16 Communication period 1 byte 1 – 1 hour
2 – 6 hours
3 – 12 hours
4 – 24 hours
5 – 5 minutes
6 – 15 minutes
7 – 30 minutes
49
Data collection period
1 byte
1 – 1 hour
2 – 6 hours
3 – 12 hours
4 – 24 hours
5 – 5 minutes
6 – 15 minutes
7 – 30 minutes
55 Time zone, in minutes 2 bytes from -720 to 840
78 Data collection period when
temperature is out of the thresholds
1 byte 1 – 1 hour
2 – 6 hours
3 – 12 hours
4 – 24 hours
5 – 5 minutes
6 – 15 minutes
7 – 30 minutes
79
Immediately send data when
temperature is out of range
1 byte
0 – OFF
1 – ON
80 Low temperature threshold 1 byte from -128 to +127
81 High temperature threshold 1 byte from -128 to +127

Vega SI-22 / User Manual
19
Revision 11 of 11 August 2021
5 STORAGE AND TRANSPORTATION REQUIREMENTS
Vega SI-22 pulse counter shall be stored in the original packaging in heated room at
temperatures +5 °С to +40 °С and relative humidity less than 85%.
The counter shall be transported in covered freight compartments of all types at any
distance at temperatures -40 °C to +85 °C.

Vega SI-22 / User Manual
20 Revision 11 of 11 August 2021
6 CONTENT OF THE PACKAGE
The pulse counter is delivered complete with:
Vega SI-22 pulse counter – 1 pc.
LoRa antenna – 1 pc.
Factory certificate – 1 pc.