Kamstrup GSM7i User manual

Installation
and user manual
GSM7i
Kamstrup A/S
Industrivej 28, Stilling, DK-8660 Skanderborg
TEL: [phone] · FAX: [phone]
[e-mail] · www.kamstrup.com

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Quick Guide
1. Run a signal test by activating the test button on the modem.
2. If the signal strength is below 12, an external antenna must be installed.
3. The external antenna should be placed in a location that optimises the
reception of the signal. Change the position of the external antenna until
the best position has been found. Run several signal tests while trying to
find the best position.
4. Use, if necessary, NetMonitor or an equivalent tool to help find the best
position for the external antenna.
5. Before leaving the installation, test the signal strength by SMS
(=signal#). Make sure that all cabinets and doors are closed before
sending the SMS.
Tips
• Always install an external antenna when installing the unit in a metal cabi-
net. The antenna must be placed outside the cabinet.
• Use dual-band GSM antennas to optimise the performance.
• Note that fire doors, concrete and metal plates disturb and weaken the GSM
signal.
• It is possible to order directional antennas for areas with very poor signal
conditions (please contact Kamstrup A/S for further information).
SMS
When placing the meter
in a metal cabinet, make
sure to place the antenna
outside the cabinet.
Make sure to close all
doors and cabinets
before sending the SMS.
Fire door
When placing the meter
below the ground (e.g. in
a basement), make sure
to place the antenna
close to a window or
outside the building.
Metal cabinet

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CONTENTS
1 Description ................................................4
1.1 DescriptionofGSM7i .......................................4
1.2 GSM7iApplication .........................................5
1.3 Tecnicaldata..............................................6
1.3.1 GSM7i, artikel No. 6816-xxxxx . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Mounting..................................................8
2.1 Mountingorder............................................8
2.2 Start-upsequence..........................................9
2.3 Signaltest .............................................. 10
2.4 Diagram of signal conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5 Light Emitting Diodes (LED’s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.6 SIMcard................................................ 13
2.6.1 MountingtheSIMcard....................................13
2.6.2 SIMcardrequirements....................................14
2.7 Mounting of external antenna (to be ordered separately) . . . . . . . . 14
2.7.1 Activating the external antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.7.2 Positioning of external antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.8 Mounting status/pulse input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.9 Mountingofloadcontrol................................... 18
2.10 Mountingofadd-onmodule................................ 18
3 Data in the GSM7i Module, Article No. 6816-Dxxxx . . . . . . . . . . . . . .20
3.1 Datalogger.............................................. 20
3.2 Backup ................................................ 20
3.3 Daily/weekly/monthly loggers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.4 Loadprofile(minutelogger)................................ 21
3.5 Eventlogger............................................. 22
4 TariffshiftingFunction......................................23
5 ErrorDetectionHelp........................................24
6 SMScommands............................................26
7 GSMxiVariantStructure.....................................28

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1 Description
1.1 Description of GSM7i
• GSM/GPRS module for a fast and stable reading of the electricity meter
• Innovative solution that future-proofs the metering point via extra module
area
• Plug and play installation with clear information about the signal strength
• Status/pulse input
• Relay output for controlling external units (load control)
• SMS reading of meter and GSM signal strength
• Internal antenna.
The GSM7i module differs from earlier GSM modules in that it
can only be placed in ”J” meters, i.e. the Kamstrup electricity meters
that have internal supply for the module.
Application
With the module GSM7i, the metering point is future-proofed since the module
supports GSM, GPRS and SMS. In addition, it is possible to mount an extra
Add-on module. On this Add-on module, it is possible to add extra features
(e.g. load control relays) or an additional communication media (e.g. ZigBee,
Z-Wave, Wireless M-Bus or similar).
The module GSM7i is mounted directly in the module area of the electricity
meter (162J, 282J, and 382J), which makes it possible to read and configure
the meter remotely. The quality of the installation is ensured by means of
informative Light Emitting Diodes (LEDs) that indicate the GSM signal strength.
Likewise, it is possible to read the signal strength by SMS in order to be able to
check installations in closed cabinets.

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1.2 GSM7i Application
The GSM7i module is used in the following meters:
Article No. Function Meter types
6816-Txxxx
Transparent reading of
electricity meter
(Transparent mode)
Kamstrup 162J (*)
Kamstrup 282J (*)
Kamstrup 382J (**)
6816-Dxxxx
Communication with
GSM7i data logger
(Data logger mode)
Kamstrup 162J (*)
Kamstrup 282J (*)
Kamstrup 382J (**)
(*) Does not apply to 162/282BCDE and 382BCDE meters since they do not have
internal supply for the module.
(**) Does not apply to 162/282BCDE, 382BCDE and 382 DIN meters since they do not
have internal supply for the module.

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1.3 Tecnical data
1.3.1 GSM7i, artikel No. 6816-xxxxx
• Dual-band GSM/GPRS module
• To be mounted as a module in the electricity meter
• Data logger for load profile (5, 15, 30, 60 min.), daily/weekly/monthly
loggers and event logger
• Tariff and load control
• Central upload of new features, e.g. new tariff switch times
• Built-in real time clock (RTC) with minimum backup for 10 days
• RTC controlled GPRS reset
• Reading of electricity meters via SMS
• Status LED’s for GSM/GPRS network and antenna signal
• GSM/GPRS signal indicator
• Possibility of adding extra feature as Add-on module.
NOTE: Installation is to be carried out by authorized personnel only as it can
be highly dangerous to touch connections and internal parts.

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2 Mounting
GSM7i, article number 6816-xxxxx, is supplied via the module plug and
prepared for mounting of an external antenna. See also chapter 7 “GSMxi
Variant Structure”, page 28.
2.1 Mounting order
1. Dismount the top cover of the meter
2. Place the GSM7i module in the meter (please check that the eight module
pins are all plugged in)
3. Insert SIM card (see paragraph 2.6.1, page 13)
4. When the diodes on the GSM7i module stop flashing, the signal strength is
read on the indicator (see paragraph 2.4, page 11)
5. If the signal strength is acceptable, mount the top cover of the meter. Make
sure that the antenna wire is not jammed
6. Before leaving the installation, check the signal strength by sending an SMS
(see chapter 6 “SMS commands”, page 26).
If the module does not indicate normal operation conditions (such as sufficient
signal strength), see chapter 5 “Error Detection Help”, page 24.

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2.2 Start-up sequence
1. Immediately after start-up, all the Signal indicator diodes and the test
diode switch on briefly (see the following figure).
2. The two Signal indicator diodes at the bottom flash until the module has
been initialised correctly (approx. 1 min.). When the diode at the bottom
stops flashing, the module has been connected to the network (after
approx. 5-10 secs.).
3. Now, the signal indicator will show the current signal level.
4. If the module is configured for communication via GPRS, the GPRS diode
switches on as soon as the module is connected to the GPRS network
(approx. 20 secs. after start-up).
5. All diodes will turn off automatically after 10 min.
Diode for antenna selection:
External or internal
Test diode
Test button
for alternative
signal test
GPRS diode
Diodes for
signal strength
indicator
1
2
3
4
5

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2.3 Signal test
Five LED’s have been mounted on the GSM7i module to indicate the current
GSM signal strength.
Immediately after starting up the module, it will try to connect to the GSM
network, and the signal strength indicator will be activated (see paragraph 2.4,
page 11).
If a higher resolution of the signal strength is required, it is possible to make a
signal test with the test button:
1. Press the button for 2 secs. after which the test diode
turns on and lights for approx. 10 secs.
2. The test diode will now indicate the signal strength
with flashes.
One long flash equals 10 and a short flash equals 1.
E.g.: Two long flashes and three short flashes equal a signal
strength of 23.
See paragraph 2.4 “Diagram of signal conversion”, page 11 for
more details.