Micropelt MVA004 EnOcean Specifications
Wireless heating valve actuator
MVA004 EnOcean
User manual and device specification
Annex: List of adapters and theft protection
August 2017 Author: EH4; Germany; Brand: Micropelt - Document number 1DSMVA004_0817v11e
MVA004 User manual and device specification
INDEX
INDEX 1
1 Document history 2
2 Use and safety recommendations 3
3 System description 4
4 Energy harvesting 6
5 User Control – Quick overview table 7
5.1 Installation with Manual Pairing 7
5.1 Installation with Remote Commissioning 9
6 Notes on radio operation 10
6.1 Transmission range 10
6.2 Other interference sources 10
6.3 Loss of communication with the room controller 10
7 EEP A5-20-01 description 11
7.1 Protocol Data Overview 11
7.2 Description of individual functions 12
7.2.1 Setpoint Selection (DB1.2, RCU to MVA004) 12
7.2.2 Valve position [%] and Set temperature [°C] in actuator mode (DB3, RCU to MVA004) 12
7.2.3 Summer Mode (DB1.3) 12
7.2.4 Recognition of valve position and reference run 12
7.3 Example of a radio protocol 12
8 EnOcean Remote Management (ReMan), Remote Commissioning (ReCom) 14
8.1 EnOcean Link Table 14
8.2 Outbound Teach-in 14
8.3 ReMan supported functions 14
8.4 ReCom supported standard functions 15
8.5 ReCom supported MVA internal parameter 16
8.6 Dolphin View DO command examples 17
9 Extended features and functions 18
10 Product ID and label 19
11 Performance data 20
12 Mechanical Interface to Radiator Valve 21
13 Annex 1: List of adapters for commonly used non-M30x1,5 valve bodies 22
14 Annex 2: Theft protection 23
August 2017 Page 1 of 23 1DSMVA004_0817v11e
MVA004 User manual and device specification
1 Document history
Date Description Version Status
06.04.2017 First release 0817_v2e Released
01.05.2017 Added section 5.5 Remote Commissioning
Added Section 9 and 10
24.05.2017 Minor changes 0817_v4e Released
03.06.2017 Added ReCom commands table 0817_v4e Released
Added DO example descriptions
28.08.2017 DB2.4 BCAP bit linked to DB2.5 Energy Storage 0817_v8e Released
24.11.2017
Safety position: Internal temperature control 21°C
instead of 50% valve position, no change to radio
communication interval
DB2.7…DB2.0 = If RCU Temp. = 0x00 and SPS =
1 (target temperature) then internal temperature
sensor is used
ReCom: Radio interval default = Auto
ReCom: Removed safe mode setting (incl. DO)
ReCom: Removed safe mode com. period (incl.
DO)
0817_v3e Released
0817_v11e Released
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MVA004 User manual and device specification
2 Use and safety recommendations
The metallic part of the unit’s housing serves as a heat sink. Be sure that the air circulation around it
is not obstructed by furniture, curtains, plants, or other objects.
If the device has been stored in a cold environment, make sure that it resumes close to room
temperature before use. This is to prevent condensation from forming.
The thermostatic radiator valve is designed for indoor use only. Do not allow the thermostatic radiator
valve to get wet. Its sensitive electronics can be affected.
The unit is best cleaned with a dry or slightly damp cloth. Do not use aggressive cleaning agents or
solvents.
Refrain from exposing the unit to environmental stress such as high mechanical forces (do not step
on it), strong vibrations, direct sunlight or extreme temperatures.
The unit must not be disassembled or modified. In case you are unsure how to use the unit, please
get in touch with your beta test consultant.
Be aware that correct operation can be affected by strong electromagnetic fields. Typical sources of
such are mobile phones, 2-way radios, RC transmitters, microwave ovens, electric motors.
The housing contains actuated springs that can lead to injuries if released. For servicing, refer to
qualified service personnel.
The thermostatic radiator valve has been designed and must solely be used for the purpose of
controlling a M30 x 1.5 heater valve. Any other use may pose a hazard to the device itself, to the
equipment involved, or to the health of the user.
When operating the device in a workplace environment, be sure to observe the workplace regulations
that may apply.
The self-powered thermostatic radiator valve is suitable solely for controlling water-filled heating
radiators. Any other use – including control of floor heating systems - is not permitted and can result
in damage. Do not disassemble or modify any part of the product. It is important to comply with the
safety notice included in these operating instructions.
Read these instructions carefully and keep them for later reference.
Thank you.
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MVA004 User manual and device specification
3 System description
This document defines the properties of Micropelt’s battery free thermostatic radiator valve MVA004. The unit
is directly mounted onto radiator valve bodies (M30x1,5 thread), where it controls the room temperature, based
on signals of a central controller. It is radio-controlled and powered by energy harvesting, so it neither requires
any cabling work nor does it consume batteries. It is designed for maintenance-free operation. The wireless
design makes the unit ideal for retrofit installation and cost-sensitive projects, where cabling cost is prohibitive.
At its heart, the MVA004 contains a thermoelectric harvesting module and integral energy storage. Beyond
this, it contains an electromechanical valve actuator, a radio module and a microcontroller that makes all parts
of the system work together. The actuator is equipped with a number of hard- and software functions that not
only allow remote-management (ReMan) and -commissioning (ReCom) but also features unique status and
monitoring capabilities. The device also offers a debug- and deployment-friendly radio communication interval
of 10 seconds for the first 10 minutes following its initial activation.
At its user interface, MVA004 has a red and a green LED, which are described in more detail in section 4. Two
internal temperature sensors are used with a) its internal temperature controller and freeze protection control
(ambient sensor) and b) the automatic radio duty cycle control of 2, 5 or 10 minutes (flow temperature sensor).
MVA004 is operating with EnOcean standard EEP A5-20-01 (4BS) in either valve position or set
temperature mode. According to the standard protocol, the drive reports to the room controller every 2/5 or 10
minutes (auto radio interval based on flow temperature) and transmits the value of its valve position. The room
controller responds with either a new control value in the value range 0% (valve closed) to 100% (valve
maximum open) or setpoint temperature (0 ... 40 ° C). When the setpoint changes, the actuator motor moves
the motor to the new position.
When operating with the setpoint temperature, it is recommended to use a separate, external room
temperature sensor, which transmits the room temperature to the room controller, which then transmits it to
the drive (as described in A5-20-01 protocol). Without external room temperature, the internal controller uses
the sensor installed in the drive (picture page 5). By heat input from the radiator in the drive, there are
deviations between the measured and actual room temperature, which are compensated by means of an
integrated correction function.
The actuator is in the delivery state in mounting position (motor positon is fully retracted). The actuator has
valve recognition. Unmounted but activated will automatically move the motor back to mounting position and
switch-off the actuator.
The internal energy storage of the actuator is fully charged upon delivery, so that sufficient energy is
available for installation and up to approximately one year of operation. The drive works 365 days a year.
When the heating system is switched on, the actuator then supplies itself independently via the heat of the
heating circuit. Due to the surplus of generated energy in winter, the internal storage provides sufficient energy
for the year-round operation including transition periods and summer.
In the event of a radio failure (6 unsuccessful communication attempts), the internal temperature controller
is activated and the radiator is regulated to a preset 21 ° C. A change of the radio interval does not take place.
The drive goes into normal operation as soon as the radio communication is restored.
When operating in unheated rooms, the internal memory will eventually be discharged. The drive then
moves to the 50% position to recharge the memory. Operation of the drive in unheated rooms is not
recommended
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MVA004 User manual and device specification
MVA004 is designed for low power operation. Therefore, all ReMan and ReCom operations are internally
time limited and must be executed within less than 5 seconds. It is strongly recommended to use script
command sets (contact Micropelt for examples) and execute ReMan only for initial teach over the air (Link
Table) and device configuration following its initial deployment.
MVA004 has a button lock after one hour function integrated that will prevent from unintended use.
MVA004
Right button
Left button
Temperature sensor
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MVA004 User manual and device specification
4 Energy harvesting
The actuator generates the necessary electrical energy for operation by means of a thermoelectric generator
(TEG), which gains electrical energy from the temperature difference between radiator flow and room
temperature. During the heating season, excess energy is accumulated in the internal storage for operation
in transition periods and summer. The energy balance of the actuator is designed to allow operation through
365 days per year when used in typical radiator heating installations.
If, in exceptional cases, the storage voltage drop below a certain limit, the actuator reports this status to the
room controller and takes the protection position (50% valve opening or maintains the set value, whichever is
the higher). Subsequently, the actuator goes to sleep and waits until the memory is re-charged by the
thermoelectric generator back to a sufficient level. As soon as enough energy is available, the actuator
resumes normal operation.
The protection position ensures that the heating valve cannot calcify in an end position and freeze protection
is ensured. Unexpected room temperatures will occur.
August 2017 Page 6 of 23 1DSMVA004_0817v11e
MVA004 User manual and device specification
5 User Control – Quick overview table
The below tables provide a quick overview of the product functionality and the installation process.
MORE DETAILED DESCRIPTION IN SECTION 8.
5.1 Installation with Manual Pairing
No Objective Button
No.
1 Pairing from
mounting
position (=
shipping
condition =
OFF)
or normal
operation (while
buttons not
locked)
2 Mounting
1 OR 2 Press for at least 5 sec
Mount the actuator before
Action LED Activity Reasons for
failure
Unit does pairing and remains
in mounting position = shipping
condition = OFF
If unit is not in mounting
position, it moves to mounting
position now.
executing run-in sequence and
normal operation
Success: Single
green flash
Failure: Triple red
flash
Controller or
gateway
either not
present or
not in pairing
mode, so that
pairing fails
3 Run-in
sequence and
normal
operation from
mounting
position
4 Get new target
value (while
buttons not
locked)
5 Return to
mounting
positon
6 Deactivate
button lock
and
RESET
followed by
normal
operation
1 OR 2 Single-press (< 1 sec)
Unit executes run-in sequence;
radio communication occurs
every 10 seconds for 10
minutes, and then reverts to
every 10 minutes.
One hour after this action,
the pushbutton switches will
lock and can only be unlocked,
by performing RESET (5.)
1 OR 2 Single-press (< 1 sec)
Unit immediately gets target
value from controller /
gateway, then moves to the
new target
1 OR 2 Hold button for 5 seconds until
single green flash.
Green LED appears, followed
a triple red LED. The device
will turn the motor back to
mounting position and switch
off.
1 AND 2 Long-press both buttons
simultaneously for at least 10
seconds: The unit enters
normal operation, assuming it
is paired. For 60 min, the unit
will accept a 5-second longpress of any button and for 10
minutes, it will run at a 10second radio communication
interval. It contacts the
Success: Single
green flash
Failure: Triple red
flash
Success: Single
green flash
Failure: Triple red
flash
Success: Single
green flash
followed by triple
red flash
After 10 seconds 1x
green (RESET
activated),
then 2x red (new
start),
after a short break
1x green (normal
operation with
successful
communication)
or
Motor or gear
error
Unit cannot
contact the
controller or
gateway
Unit cannot
contact the
controller or
gateway it
has been
paired with
or unit has
never been
paired.
Mounting or
August 2017 Page 7 of 23 1DSMVA004_0817v11e
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