WM Systems WM-I3 Bedienungsanleitung
User manual
for WM-I3®metering modem
v1.70
___________________________________________________
2022-08-17
Document specifications
This documentation was made for presenting the installation and configuration
steps of the WM-I3®pulse counter / MBUS data collector and transmitter device.
Document Version:
REV 1.70
Hardware Type/Version:
User Manual WM-I3
®
metering modem
Hardware Version:
V 3.1
Bootloader Version:
V 1.80
Firmware Version:
V 1.90m
WM-E Term®configuration
software version:
V 1.3.71
Pages:
37
Status:
Final
Created:
16-01-2021
Last Modified:
17-08-2022
Chapter 1. Introduction
The WM-I3®is our 3rd generation low-power cellular pulse signal counter and data
logger with a built-in cellular modem for smart water and gas metering.
Automated water meter readings with customizable breakdowns, leak detection and
prevention. Detection of water leakages to avoid flooding, non-revenue water for
more accurate billing, optimization of operating costs, and improvement of water
supply reliability.
Remote data collection via pulse input (S0 type) or M-bus (order option) of the
connected meter. Data is sent through LTE Cat.M / Cat.M cellular networks to a
central server or HES (Head-end System).
This smart water metering device has a standalone and intermittent operation.
It reads and counts the consumption data (pulse signals or M-Bus data) of the
connected meters in „sleep mode” and saves the data to the local storage. Then it
wakes up at pre-configured intervals to transmit the stored data using MQTT or
LwM2M protocol*, plain TCP/IP packets or JSON, XML format.
* Our LwM2M solution is compatible with the Leshan Server, Leshan Bootstrap and
the AV Systems’s LwM2M server solution.
The device has an IP67 waterproof housing. The installation is easy, which is supported
by operation LED lights to indicate proper functioning.
Optionally, add-on boards can be attached to the mainboard to extend the
capabilities (e.g. more inputs, M-Bus connection, etc).
The modem has a special internal battery which provides energy for more than 5-10
years.
With the over-the-air (OTA) protocol, the device can be configured and the firmware
can be updated remotely without the need to send experts to the field.
Operation / Wireless communication
The smart device has been designed for standalone and intermittent operation. The
modem is continously receiving and counting the pulse signals of the connected
meters or sensors –while the device is in stand-by operation.
Then it wakes up at the pre-defined intervals to transmit the collected consumption
data through the NB-IoT mobile network to a server IP address. Therefore, the
collected and counted signals can be transmitted to the data center.
The device provides a SIM-card independent- and mobile operator independent
solution.
It can be used by push data transmission method, thus the modem can initiate the
communication with the AMR centre periodically at a pre-configured time intervals.
Design and installation
The modem was especially developed for water, gas and heat metering usage - for
pulse-signal output capable meters, and smart metering devices, which can be
connected to the modem by its design and its connection interface.
It can be installed to the smart meter or sensor on the site or location - can be
mounted to wall or fixed position by a fastening metal strip due to the back side
fixation possibility of the enclosure.
Power source
The device is powered by an internal battery, therefore it provides independent
operation from any external power source. The special-filled battery provides long
lifetime (5 or 10 years) –or approximately able to serve up to 4 000 data sending cycles.
The device is able to monitor its battery status continuously and send alerts when
capacity is too low.
Security
The device has security features, such as local data encryption (usage of AES-256 hash)
and immediate alarm notification of the following sabotage and failure events:
•Tamper switch (for enclosure cover / top remove detection)* –under
development
•Acceleration (motion) detection* –under development
•Hall sensor (magnetic field detection)* –under development
•Leak detection, excessive flow/consumption detection (exceeding the normal
consumption, warning of a failure)
•Battery capacity monitoring (in case of low voltage detection, it will notify about
the necessity of battery exchange –by transmitting the voltage level value)
Configuration
The modem is configurable by local –due to serial link and wiring - or by remotely
through the wireless network via TCP (after configuring the APN, username and
password parameters by the hints of your mobile operator).
All data transmission related settings, meter counter handle, measurement units,
operation cycles of device wake-up/data storage/data sending can be all configured
by the downloadable WM-E Term®configuration software. The configuration is
possible for a singular device or branch of devices.
The software requires Windows®platform to be executed, and it supports several
languages.
With the over the air (OTA) protocol, the device can be configured and the firmware
can be updated remotely without the need to send experts to the field.
MQTT protocol usage
The description of the MQTT protocol usage on the WM-I3 can be configured by it
MQTT configuration description:
https://m2mserver.com/m2m-downloads/MQTT_Protocol_Description_for WM-I3_v1_20_EN.pdf
LwM2M protocol usage
Our LwM2M solution is compatible with the Leshan Server and Leshan Bootstrap
server. Please consider this, when you will install the LwM2M server for the WM-I3
usage.
The description of the LwM2M protocol usage on the WM-I3 can be configured by this
LwM2M settings description:
https://m2mserver.com/m2m-downloads/User_Manual_for_WM-I3_LwM2M_Settings_v1_70_EN.pdf
Chapter 2. Connections
2.1 External view
The top cover of the modem’s enclosure, which provides a safe and dehumified lock by
using the internal silicone ring inside of the cover.
2 –Enclosure top part (can be fastened by 4 screws)
3 –Fixation screws of the enclosure to close and lock the top cover of the enclosure
6b –Sealed input cable (Pulse / MBUS), with insulated wires
9 –External SMA antenna connector (50 Ohm)
6b
7
2
–
A
9
6b
3
–
A
3
–
A
3
–
A
3
–
A
2.2 External view (bottom side)
1 –Enclosure bottom part (ABS plastic with IP67 protection and 6 holes –where the
PCB can be fastened into the enclosure by screws at holes)
6b –Sealed input cable (Pulse / MBUS), with insulated wires
9 –External SMA antenna connector (50 Ohm)
14 –Fastening point - The enclosure can be fastened and fixed by screws here, to mount
the enclosure to a wall or the pipeline.
15 –Fastening point - The enclosure can be fastened and fixed by a metal strip here, to
mount the enclosure to a wall or the pipeline.
14
14
15
14
14
15
9
6b
2.3 Internal connectors, interfaces
1 –Enclosure bottom part (ABS plastic with IP67 protection and 6 holes –where the
PCB can be fastened into the enclosure by screws at holes)
3 –Fixation screws of the enclosure to close and lock the top cover of the enclosure
4 –Special filled, longlife battery (Lithium-Thyonyl-Chloride, 3.6V DC, CR14250 type)
5 –SIM card slot (for micro-SIM, 3FF type)
6a –Input cable connector (to J11) –for meter pulse output(s), S0-type
7 –Connection interface for MBus additional board (5-pins, marked by J17)
8 –Power ON pins (2-pin connection, make short to start the device, allows the battery
power source for the device –connector marked by J5)
10 –Tamper switch (for sense the cover / enclosure top remove)*
-
this feature is
currently inactive
11 –Configuration port (5-pins, for local configuration and firmware update, J12)
LEDS –Operation LEDs
4
5
1
–
A
8
–
A
10
6a
LEDS
11
7
2.4 Input cable connector pinout
The opposite side of the pulse input cable (6b) must be wired to the pulse output of the meter,
according to the cable pinout of J11 connector.
Important! The current firmware version can receive signals of the 1st pulse input.
For normal pulse counting
Active pins on cable nr. 6a:
-nr. 5: PULS0_0 (for signals of the #1
pulse input)
-nr. 2: PULS0_1 (counting direction)
–connect to use as normal
Pinout for reverse measuring
Active pins:
-nr. 5: PULS0_0 (for signals of the #1
pulse input)
-nr. 2: PULS0_1 (counting direction) –connect the pin to the GND (grounding) to
reverse counting
2.5 Fastening of the enclosure
The enclosure can be fastened and
fixed by screws (at point nr. 14) or a
metal strip (at mount point nr. 15)
and mount the WM-I3 enclosure to
a wall or the pipeline.
14
15
2
1
14
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