Elvaco CMa12w Installationsanleitung

INTRODUCTION

CMa12w is a 1-way wireless M-Bus communicating temperature

sensor for indoor use.

For a complete description of the product or for information in Swedish,

visit the Elvaco AB website, www.elvaco.com.

OVERVIEW

CMa12w

Indoor wireless M-Bus temperature sensor

1. LED 1

2. Push-button (SW1)

3. Serial number (secondary

address) and article number

4. Do not use for mounting

MOUNTING

When mounting the CMa12w, avoid rooms with a lot of supplementary

heat, such as kitchens or south facing rooms. Position the sensor

away from direct sunlight. Avoid placing on an external wall or near an

external door. Make sure that the sensor is not positioned closer than

1 m from the nearest radiator and at least 1.5 m above the ﬂoor.

The CMa12w can be mounted directly on the wall, or over a mounting

box Ø70 mm. If the CMa12w is placed over a conduit pipe, it is

recommended to ﬁll the pipe to prevent air ﬂow which could affect

accuracy of the values.

Remove the rear cover to be able to press the installation button SW1

(2).

IMPORTANT

• Do not use mounting holes (4) as shown in overview.

• Turn the rear cover as shown in the overview.

• Do not mount the product inside a steel cabinet, which will

dramatically lower the possibilities to connect to a master.

• If the product should be demounted from the wall, use a

screwdriver to separate the product from the rear cover. The

screwdriver should be inserted carefully in the upper part of the

holes as shown in the ﬁgure at the top of next column.

WIRELESS M-BUS

The product is delivered with the radio turned off. The radio must be

manually switched on during the installation procedure. The product will

not be activated until the installation procedure is started.

INSTALLATION

The product can be installed and enabled in two modes. Please advise

your project manager which operation mode is used in your project.

Unencrypted mode: Meter data is sent unencrypted and no encryption

key is needed to decrypt the data.

1. Press and hold button SW1 (2) for 5-10 seconds, until LED1 (1)

ﬂashes quickly.

2. Release SW1 (2)

Encrypted mode: Meter data is sent in encrypted mode and an encryption

key is needed to decrypt the data.

1. Press and hold button SW1 (2) for 12-25 seconds, until LED1 (3)

ﬂashes slowly.

2. Release SW1 (2).

* If the button is released in this mode, the CMa12w will return to inactive

mode. This also applies if the button is pressed down for longer than 25

seconds.

IMPORTANT

Make sure that the product is activated by pressing SW1 in normal

operation. If the product is activated in unencrypted mode, LED1 will

ﬂash quickly 5 times. If the product is activated in encrypted mode,

LED1 will be illuminated for 1 second

OPERATION

The product will automatically, after the installation procedure, send

C1 messages every 180 seconds containing sensor data, such as

instantaneous temperature. The product will also send product status

information, containing battery status and other relevant information.

Release SW1 for

unencrypted mode

LED1 fast ﬂash

Release SW1 for

encrypted mode

LED1 slow ﬂash

6 s 5 s 12 s2 s*

equacies. Elvaco AB takes no responsibility for damages, liabilities or other losses by using this product. No part of the contents of this manual may

be transmitted or reproduced in any form by any means without the written permission of Elvaco AB. Printed in Sweden.

CMa12w Quick manual A4 English

Document id: 1090094

Version: 3.0

TROUBLESHOOTING

Master does not receive any messages from the product

This can be due to the following reasons:

• The product has not been activated during the installation

procedure.

• The master is not powered up or not correctly conﬁgured.

• The master is not within range of the radio signal.

• The master antenna is not properly mounted for best performance.

• The product is mounted inside a metallic cabinet or is disturbed by

other radio equipment.

LED1 is not illuminated when using push button

This can be due to the following reasons:

• The product has not been activated during the installation

procedure.

• The battery is empty. Check the serial number label of the product

when the product is produced. The battery lifetime is 15 years.

Meter values are incorrect

The temperature sensor is very accurate, but incorrect positioning of

the product may result in unintended temperature variations. Please

take the following in consideration when mounting the product:

• Do not mount the product close to heat or cold sources.

• Do not mount the product in direct sunlight.

• Do not mount the product in the area of a spotlight beam.

TECHNICAL SPECIFICATIONS

Mechanics

Casing material ABS UL94-V0, white

Protection class IP20

Dimensions 80 x 80 x 28 mm

Weight 75 g

Antenna Wireless M-Bus Internal

Mounting Wall mounted

Electrical

Power supply Battery, lifetime 15 years at 15-25 °C

Environmental

Operating temperature

range

-10 °C to +50 °C

Storage temperature range -40 to +85 °C

Operating humidity 0 to 95 %RH No condensation

Sensor accuracy

Temperature +5 to +55 °C +/- 0.2 °C Typical tolerance

Wireless M-Bus

M-Bus standard EN 13757-4 mode C1

M-Bus commands SND_NR

Values Temperature, instantaneous and

average over hour

Transmit interval 180 seconds

RF power 10 mW

Sensitivity -102 dBm

Frequency 868 MHz

Approvals

EMC EN 61000-6-2, EN 61000-6-3

Product Part number Description

CMa12w 1050068 Wireless M-Bus temperature

sensor for indoor use.

ORDERING INFORMATION

CONTACT INFORMATION

Elvaco AB Technical support:

Phone: +46 300 434300

E-mail: support @elvaco.com

Online: www.elvaco.com

SAFETY

The warranty does not cover damage to the product caused by usage

in any other way than described in this manual. Elvaco AB can not

be liable for personal injury or property damage caused by usage in

anyother way than described in this manual.

Products:

CMeX12s

Products:

Thisdeclarationo

Product

CMeX10

CMeX11

CMeX10S

CMeX11S

CMeX12S

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othernormativedocuments:

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CMe31002016

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Theobject(s)ofthedeclarationlistedab

LVDDirective2014/35/EU

EMCDirective2014/30/EU

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Andareinconformitywiththefollowing

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EN55022(Radiatedemission)

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

Kungsbacka,Sweden,2016‐04‐16



DavidVonasek

CEO

EUDEC

Thisdeclarationofconformit

ElvacoAB,Te

ProductYearo

CMe30002016

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Theobject(s)ofthedeclarationlistedab

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EMCDirective2014/30/EU

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Kungsbacka,Sweden,2016‐04‐16

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DavidVonasek

CEO

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Thisdeclarationofconformit

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)

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Kungsbacka,Sweden,2016‐04‐16



David Vonasek, CEO

EUDEC

Thisdeclarationofconformit

ElvacoAB,Te

ProductYearo

CMe X402016



Theobject(s)ofthedeclarationlistedab

LVDDirective2014/35/EU

EMCDirective2014/30/EU

RoHS2011/65/EU

Andareinconformitywiththefollowing

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EN61000‐4‐2(ImmunitytoE



Kungsbacka,Sweden,2016‐04‐16



DavidVonasek,CEO



3100

3000

2100

X40

ARATIONOFCONFO

isissuedunderthesoleresponsi

nikgatan18,S‐43437Kungsback



CE‐marking

veisinconformitywiththerelevantComm

harmonizationstandardsorothernormativ

‐injection)

‐field)

oltagevariation)

rst)

rge)

D)

ARATIONOFCONFO

isissuedunderthesoleresponsi

nikgatan18,S‐43437Kungsback



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isissuedunderthesoleresponsi

nikgatan18,S‐43437Kungsback



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veisinconformitywiththerelevantComm

14/53/EU

harmonizationstandardsorothernormativ



‐injection)

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radioequipment)

)

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ARATIONOFCONFO

isissuedunderthesoleresponsi

nikgatan18,S‐43437Kungsback



CE‐marking

veisinconformitywiththerelevantComm

harmonizationstandardsorothernormativ



‐injection)

‐field)

rst)

rge)

D)

MITY

bilityofthemanufacturer:

a,Sweden.

unityharmonizationlegislation:

documents:

MITY

bilityofthemanufacturer:

a,Sweden.

unityharmonizationlegislation:

documents:

MITY

bilityofthemanufacturer:

a,Sweden.

unityharmonizationlegislation:

documents:



MITY

bilityofthemanufacturer:

a,Sweden.

unityharmonizationlegislation:

documents:



Elvaco AB, Kabelgatan 2T, S-43437 Kungsbacka, Sweden

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