Elvaco CMa12w User manual

CMa12w
Indoor temperature sensor, Wireless M-Bus
INTRODUCTION
CMa12w is a 1-way Wireless M-Bus temperature sensor
developed for indoor use.
For more information about the product, please visit the
Elvaco AB website, http://www.elvaco.com.
English
MOUNTING
The sensor is mounted on a wall by using the holes on the
product rear cover.
OVERVIEW
CONFIGURE SETTINGS VIA NFC
CMa12w is equipped with an NFC module, which can be used
to configure settings or read data. Please refer to the user’s
manual for more information on how to use NFC.
FACTORY DEFAULT RESET
Below, the factory default settings for CMa12w are listed.
IMPORTANT
• Avoid mounting the product near supplementary heat
sources, such as kitchen stoves, or in direct sunlight.
• Make sure to mount the product at least 1.5 meters
from the floor and at least 1 meter from the nearest
radiator.
• Do not mount the product on an external wall or near a
door. If mounted over a conduit pipe, make sure that the
pipe is filled to prevent air flow.
• Do not mount the sensor in a steel cabinet. Doing so
will dramatically decrease the signal coverage.
DEMOUNTING
To demount the sensor, carefully insert the end of a
screwdriver in the upper part of one of the enclosure bottom
holes, as illustrated below.
WIRELESS M-BUS
Upon delivery, the sensor will be deactivated with the radio
turned off. The product will start transmitting data as soon as
it is activated.
ACTIVATION
The sensor can operate in two different modes: encrypted
mode or unencrypted mode. Please advise your project
manager about the best option for your specific project.
Unencrypted mode
To activate the unencrypted mode:
1. Press and hold push button SW1 (3) for 6-10 seconds
until the LED light (2) starts to flash quickly.
2. Release push button SW1.
Encrypted mode
To activate the encrypted mode:
1. Press and hold push button SW1 (3) for at least 13
seconds until the LED light (2) starts to flash slowly.
2. Release push button SW1.
OPERATION
Upon activation, the sensor will begin transmitting wireless
M-Bus telegrams in mode C1 every 180th second. The
telegrams contain sensor data as well as various information
about the product status.
Factory default settings
Transmit interval 180 seconds
Encryption mode Off
Locked No
2. LED light
3. Push button (SW1)
4. Serial number
IMPORTANT
• Make sure to verify that the product is activated by
pressing SW1. If the product is set to encrypted mode,
the LED light (2) will flash five times, if it is set to
unencrypted mode, it will flash once.
*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
• If setup lock is enabled, the device cannot be unlocked
again.
1. NFC antenna

Item number Description
1050135 CMa12w Indoor temperature sensor, Wireless M-Bus
CONTACT INFORMATION
Elvaco AB Technical support:
Phone: [phone]
E-mail: [email protected]
Online: www.elvaco.com
TECHNICAL SPECIFICATIONS
Mechanics
Protection class IP30
Dimensions (w x h x d) 80 x 80 x 25 mm
Weight 75 g
Mounting Wall-mount
Antenna Internal
Electrical connections
Supply voltage Battery, life span 15 years at 15 °C to
25 °C
User interface
Push button SW1 Product activation
LED light Activation
Momentary values Temperature, status
Historic values Average values over the last hour/day
M-Bus slave interface
Frequency 868.95 MHz
Transmit power 10 mW
Transmit interval 180 seconds
Encryption Ye s
Wireless M-Bus modes C1
Approvals
EMC EN 61000-6-2, EN 61000-6-3
ORDERING INFORMATION
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 any other way than described in this
manual.
TROUBLESHOOTING
The master does not receive any telegram from the sensor
Please verify that:
• The product has been activated.
• The master is connected to a power source and is
correctly configured.
• The master is within range of the radio singal.
• The master antenna is properly mounted for ideal
performance.
• The master and the sensor use the same wireless M-Bus
mode (C1).
• The sensor is not mounted inside a metallic cabinet.
• The sensor is not disturbed by other radio equipment.
Temperature value is inaccurate
Although the temperature sensor is normally very accurate, an
incorrect positioning of the product can sometimes result in
unintended temperature variations. When mounting the sensor,
please verify that:
• The product is not mounted near any heat or cold
sources.
• The product is not mounted in direct sunlight
• The product is not mounted in a spotlight beam.