Elvaco CMa10w User manual
INTRODUCTION
The CMa10w/CMa11w is a 1-way wireless M-Bus communicating
temperature and humidity 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
CMa10w/11w
Indoor wireless M-Bus temperature and humidity sensor
1. Push-button (SW2) (CMa10w)
2. Display (CMa10w)
3. LED 1
4. Push-button (SW1)
5. Serial number (identification)
6. Do not use for mounting
MOUNTING
When mounting the CMa10w/CMa11w, 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 CMa10w/CMa11w can be mounted directly on the wall, or over a
mounting box. If the CMa10w/CMa11w 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
(4).
IMPORTANT
• Do not use mounting holes (6) 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.
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 the encryption
key is not needed to decrypt the data.
1. Press and hold button SW1 (4) for 6 seconds, until LED1 (3)
flashes quickly.
2. Release SW1 (4).
Encrypted mode: Meter data is sent in encrypted mode and the
encryption key is needed to decrypt the data.
1. Press and hold button SW1 (4) for 13 seconds, until LED1 (1)
flashes slowly.
2. Release SW1 (4).
* If the button is released in this mode, the CMa10w/CMa11w 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, LED1 will flash shortly.
OPERATION
The product will automatically, after the installation procedure, send
T1 messages every 6th minute containing sensor data, such as
instantaneous temperature and humidity. The product will also send
product status information, containing battery status and other relevant
information.
CONFIGURE USING LCD DISPLAY (CMA10W)
The display shows current sensor information when push button SW2
is used. The display is also used to change and view the CMa10w
configuration. The display is turned off in normal operation mode. End
users only have access to the Standard menu. The Setup menu can only
be entered using the push-button SW1 on the rear of the product.
Release SW1 for
unencrypted mode
LED1 fast flash
Release SW1 for
encrypted mode
LED1 slow flash
6 s 5 s 12 s2 s*
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© 2016, Elvaco AB. All rights reserved. The documentation and product are provided on an “as is” basis only and may contain deficiencies or
inadequacies. 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.
CMa10w, CMa11w Quick manual A4 English
Document id: 1090056
Version: 4.0
Standard menu
Push-button SW2 is used to change display page and reset average
values. Enter next page by pressing SW2.
Setup menu
From the Standard menu, enter the Setup menu by pressing the push-
button SW1 for 5 seconds. Change values by pressing push-button
SW2. Change page by pressing SW1 for 2 seconds. If more than one
option can be set on one page, press SW1 once for a short time to
configure the next option.
RESET TO FACTORY DEFAULT
In order to reset the product configuration to factory default, navigate to
“Total Reset” in the setup menu and select “y”.
TROUBLESHOOTING
Master does not receive any telegram sent 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 position of the product is inside a metallic cabinet or is
disturbed by other radio equipment.
No information is shown in the display when using push button
This can be due to the following reasons:
• The product has not been activated during the installation
procedure.
• The LCD contrast is set to a low value.
• The battery is empty. Check the serial number label of the product
when the product is produced. The battery lifetime is up to 12
years depending on usage.
Temperature value is inaccurate
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 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 Internal battery, 12 years
Environmental
Operating temperature range CMa10w: 0 °C to +50 °C
CMa11w: -20 °C to +55 °C
Storage temperature range -40 to +85 °C
Operating humidity 0 to 95 %RH No condensation
Sensor accuracy
Temperature 10 to 30 °C +/- 0.2 °C
Humidity 10 to 90 % RH +/- 2 % RH
Wireless M-Bus
M-Bus standard EN 13757-4 OMS compliant, mode T1
M-Bus commands SND_NR
Values Temperature, humidity, min/max/average
RF power 10 mW
Sensitivity -104 dBm
Frequency 868 MHz
Approvals
EMC EN 61000-6-2, EN 61000-6-3
Factory defaults
Language ENG
Transmit interval 6 minutes
Encryption mode Off
LCD contrast 0
Locked No
Product Part number Description
CMa10w 1050061 Wireless M-Bus communicating temperature and
humidity sensor for indoor use. With LCD display.
CMa11w 1050063 Wireless M-Bus communicating temperature and
humidity 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 any
other way than described in this manual.
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