Installation and operating instructions

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Installation and operating instructions

Impulse module with LoRa-WAN

TM

radio interface

INNOTAS ELEKTRONIK GMBH

December 8th, 2020

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1 Table of Contents

2 LIST OF REVISIONS ... 1 3 PURPOSE OF USE ... 2 4 ASSEMBLY INSTRUCTIONS... 2 5 OPERATION ... 2 5.1 BUTTON ... 2 5.2 DISPLAY ... 2 5.3 MENU STRUCTURE ... 3

5.3.1 DISPLAYS IN STORAGEMODE ... 3

5.3.2 DISPLAY IN MAIN MENU ... 4

5.3.3 DISPLAY IN SERVICE MENU ... 4

6 ACTIVATION OF THE DEVICE ... 5

6.1 ACTIVATION OF THE RADIO ... 5

7 SETTINGS ... 6

7.1 SETTINGSADR ... 6

7.2 SETTINGS LINKCHECK ... 6

7.3 JOIN-PROCESS ... 6

8 BEHAVIOUR IN CASE OF LOST CONNECTION... 6

9 CONFIGURATION OF THE PULSE MODULE ... 7

9.1 PARAMETERIZATION via IrDa OPTICAL HEAD... 7

9.2 FACTORY CONFIGURATION ... 7 10 MONITORING FUNCTIONS ... 8 10.1 BATTERY MONITORING ... 8 10.2 RESET MONTORING ... 8 10.3 MEMORY MONITROING ... 8 10.4 HF-ERROR ... 8 11 TECHNICAL DATA ... 9

12 WARNING AND SAFETY INFORMATION ... 10

2 List of revisions

REVISION DATE CHANGE

1.0 08 December 2020 First edition

INSTALLATION AND OPERATING INSTRUCTIONS

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Impulse module with LoRa-WAN

TM

radio interface

3 Purpose of use

The impulse LoRa module is used to record impulses and forward them via radio. LoRa-WANTM comes as the radio standard for use. It has two pulse inputs. For example, the

pulses from a pair of water meters (hot water and cold water) can be recorded with one module. If only one input is required, the second input can remain free.

4 Assembly instructions

The compact device is located in the housing of an EHCA. For assembly, the aluminum plate (heat conductor of the EHCA) must be fastened with suitable means. For this purpose screws with a diameter of around 3 mm, for example, are suitable. Then snap on the

module and fix it with the seal. The variant in the IP housing has to be opened before mounting in order to access the 2 mounting holes.

5 Operation

5.1 Button

The pulse module is operated with a single, yellow-colored button that is located on the front in the middle of the housing.

The button has two operating modes: Briefly press the button once (short button) or press it for longer than 3 seconds (long button). The operator does not have to count the seconds. From every display, however, the device automatically jumps back to the initial state after 20 seconds without further pressing.

Abbreviations: LT - long press of the button (> 3 seconds) KT - briefly press the button

5.2 Display

The pulse module has a 7 1/2 digit LCD display. The display is OFF in normal operation. If the user wants to read values or communicate with the optical interface, he "wakes" the device up by briefly pressing the button (KT). If the button is not pressed any further, the pulse module returns to the "idle state" after 20 seconds and switches the display OFF.

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5.3 Structure of the menu

The display of the pulse module can be divided into 3 levels. Level 1 is the display in storage mode. This is the state it was in before it was installed and commissioned. The other levels can be reached in the attached state by pressing a button and are called the main menu and service menu.

5.3.1 Displays in storage mode

The pulse module is parameterized ex works with parameters according to customer requirements or with standard values. Then it is put into a transport mode (storage mode). In this state it is inactive and the display is off. After briefly pressing the button, the display flashes as follows:

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5.3.2 Display in the main menu

5.3.3 Display in the service menu

The service menu can be accessed from the main menu using the long key.

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Activation of the device

Before installation and activation, the devices should be made known to the LoRa server (commissioning). To do this, the DEVEUI, APPEUI and DEVKEY must be made known to the server. To simplify the process, you will be sent an "electronic delivery note", a csv file with all the numbers of the devices delivered.

6.1 Activation of the radio

The pulse module is delivered in "storage mode", i.e. the measurement and the radio are inactive. The connection establishment set at the factory

is OTAA.

There are 4 ways to activate the radio and start the JOIN process:

a) by pressing the button for longer than 3 seconds b) with an optical head and the free software

LST (LoRa Setup Tool) from Innotas

c) with an IrDa opto head and the free Android APP to activate our LoRa products. Note: This only works with a deactivated PIN!

d) via activation head, purchase via Innotas Note: This only works with a deactivated PIN!

After activation, the first thing to do is to flash the display test. After a successful JOIN process, the device sends several hours every 2 minutes. This enables the fitter to promptly inquire about successful integration into the LoRa network from the server. After that, the device only sends at the preset send interval.

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7 Settings

7.1 ADR setting

The setting ADR (Automatic Data Rating) means that the data rate or the spreading factor of the radio transmission are controlled dynamically and automatically. The LoRa device sends a radio protocol with an acknowledgment request to the server. If the acknowledgment is not received, the device will first repeat the protocol and then increase the spreading factor. If the server receives the protocol properly and with good quality, it sends the device a

command to reduce the spreading factor. Large spreading factors lengthen the protocol and thereby the probability of a collision with another radio protocol and more energy is

consumed.

7.2 Link Check setting

The device checks cyclically whether there is still a connection to the server.

7.3 JOIN process

In the connection setting OTAA (factory setting), the device requests a connection from the network with its device ID of DEVEUI and the application ID of APPEUI. The protocol is encrypted with the DEVKEY. If the server knows the device, it replies to the device and now negotiates new private keys with the device. These are the NetSKey and the AppSKey. From this point on, communication is encrypted privately. The device is now integrated into the network.

8 Behavior in the event of a connection failure

After activation, the device tries a JOIN process with the LoRa-WAN network. If this does not succeed, it is repeated after some time with a higher spreading factor. If there is no connection, the radio goes into idle mode for 24 hours. The JOIN sequence is then run through again. If there is another unsuccessful attempt, the device pauses again for 24 hours, etc.

If the device is already integrated but the server does not answer the acknowledgment requests, because z. For example, the telegrams do not arrive at the server, the

acknowledgment does not arrive at the device or the server is switched off, then the device first increases the spreading factor. Arrived at SF12 and a few unsuccessful repetitions, the device falls back into the JOIN process and tries to establish a new connection to the LoRa network every 24 hours from then on.

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9 Configuration of the pulse module

9.1 Parameterization via IrDa optical head

The pulse counter can be parameterized using a standard IrDa optical head. The following parameters can be changed in conjunction with the LST (LoRa Setup Tool) software:

• Date and Time • Meter readings

• Due date (monthly, annually)

• Key date month (annually for a key date) device • PIN

• LoRa settings:

O Connection type OTAA / ABP

O APPEUI, DEVKEY, NETID, NetSKEY, AppSKEY O ADR, link check

O Send interval

9.2 Factory configuration

The pulse module is delivered configured according to the customer's specifications. To do this, the customer fills out an order form. The following settings can be specified:

• Time zone

• Connection setting OTAA

• Reference date, monthly or annually • Reference date month, if annually • APPEUI, DEVKEY

• Device PIN "0000" (deactivated) or customer-specific

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10 Monitoring functions

The radio add-on module monitors the most important basic functions and settings during operation in order to ensure proper operation and to signal possible errors in good time.

10.1 Battery monitoring

The battery of the pulse module has a service life of 6-10 years in normal operation. The service life is largely determined by the number of pulses to be counted and the protocols to be sent. A "Batt low" error is set after 10 years of operation since production or if the battery voltage falls below the limit during radio operation. From this point on, the pulse counter still has a power reserve that can vary between weeks and months depending on the battery load (due to radio frequency, low or high ambient temperature and pulse frequency). The error bit is transmitted via LoRa and can be read out via the interface. The error can be reset via the optical interface. The battery monitoring is activated at the factory.

10.2 RESET monitoring

The pulse module registers a restart of the software in the event of an error. The error is communicated via radio and the interface.

10.3 Storage monitoring

The pulse module monitors the consistency of the set parameters. If it detects an error, a checksum error is set. The error is communicated via radio and the interface.

10.4 HF error

This is an internal diagnostic function.

The controller monitors the correct function of the radio chip. If malfunctions are found, an error bit is set which can be read out via the optical interface.

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Specifications

Min. Pulse ON / OFF time > 10ms

Max pulse rate 50 Hz

Operation Button / optical interface 3 V DC

Power supply lithium battery

Delivery Storage mode (radio not active)

Operating time with a

6-10 years battery

Storage Counter readings / reference values

Radio interface LoRa WAN TM 868-870MHz frequency band

V1.0.2 Specification LoRa-WAN TM

up to 14dBm Radiated power

Number of telegrams per

<= 12 Day

Data security Radio 2-way AES 128, optics via PIN

button / opto head / activation head Activation of radio

Storage temperature - 20 ° C - 60 ° C

Operating temperature - 10 ° C - 60 ° C

Approx. 140x65x41mm without cable

Dimensions

CE according to directive 2014/53 / EU (RED) IP 65 in

Certification mark additional housing Protection class Weight Approx. 260 g D O C U M E N TA TI O N E le ct ro ni c pu ls e co un te r w ith L oR a-W A N TM

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Warning and safety information

The pulse module is only intended for recording and forwarding consumption values. The specified environmental conditions must be observed. The product is to be installed professionally and in accordance with the installation

guidelines and may therefore only be installed by trained specialist personnel.

The pulse module contains a battery and must be disposed of properly.

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Figure

Updating...

References

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