Micropelt iTRV MVA 005 Specifications

Wireless heating valve actuator

MVA005 EnOcean

User manual and device specification

EnOcean Equipment Profile A5-20-06

Annex: List of adapters and theft protection

MAR2019 Autor: Micropelt - Eine Marke der EH4 GmbH - DokumentenNr.: MVA005_1DS_0319v2e.docx

MVA005
User manual and Datasheet

INDEX

INDEX 1

1 Document history 2

2 ERRATA 2

3 Use and safety recommendations 3

4 System description 4

4.1 Picture MVA005 with dial for local control 6

5 Energy-supply through thermal Energy Harvesting 7

6 User Control - Quick overview table 8

6.1 Installation with Manual Pairing (Teach-In) 8

6.2 Local offset 8

6.3 Deactivation and RESET 10

6.4 Installation through SIGNAL telegram and Remote Commissioning 11

6.5 Remarks Remote Commissioning 12

6.6 Flowchart Remote Commissioning 13

6.7 Flowchart Manual RESET 14

6.8 Flowchart Teach-In, Mounting position and activation 15

7 Notes on radio operation 16

7.1 Transmission range 16

7.2 Other interference sources 16

7.3 Loss of communication with the room controller 16

8 EnOcean Equipment Profile EEP A5-20-06 17

8.1 Protocol data overview 17

8.2 Description of individual functions 20

8.2.1 Setpoint Selection (SPS) 20

8.2.2 Operating mode (SP) 20

8.2.3 Local offset (LO) 20

8.2.4 Radio communication interval (RFC) 20

8.2.5 Summer bit (SB) 21

8.2.6 Valve recognition and ACO 21

8.2.7 Window open detection (DWO) 21

8.2.8 Radio strength and com. error (RSS & RCE) 21

8.2.9 Reference Run (Maintenance) 21

8.3 Radio telegram example 22

9 EnOcean Remote Management (ReMan), Remote Commissioning (ReCom) 23

9.1 EnOcean Link Table 23

9.2 Outbound Teach-In 23

9.3 ReMan supported functions 23

9.4 ReCom Standard Functions 24

9.5 ReCom internal MVA Parameter 25

10 Extended Features and Functions 27

11 Product ID and Label 28

12 Performance data 29

13 Mechanical Interface to Radiator Valve 31

14 Annex 1: Adapter list 32

15 Annex 2: Theft protection 33

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MVA005

V

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User manual and Datasheet

1 Document history

Date Description

31.08.2018

01.10.2018

01.03.2019

Transfer from released German version and first

release English version

Section 10:

 Product ID 0x004900000001
 Added product label picture
 Added SEC CODE default valve

Dissolved Errata MVA005_V5.15.b.3

 Added manual RESET SEC CODE
 Freeze protection sensor changed from ambient

to flow

 Radio loss set point changed
 Added 2nd freeze protection value 0°C (SPS=1

and Setpoint 0°C)

 Additional flow charts and descriptions
 Added LED-signal with temperature sensor

failures (Short circuit, disconnection)

ersion Status

0818_v1e Released

0818_v1e Released

0319v2e.docx Released

2 ERRATA

VERSION

MVA005_V5.15.b.3 RECOM Standard Command RESET TO

RESET SEC CODE TO DEFAULT not

MVA005_V5.26.a.7 4BS radio communication interval 120min

THEMA WORKAROUND

Execute RECOM Operation and write

DEFAULT not supported

supported

not supported

Default values
<>

<>

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MVA005
User manual and Datasheet

3 Use and safety recommendations

Dear valued customer,

Thank you for choosing our product. To operate the self-powered radiator actuator, please read this manual
carefully. Keep the instructions for future reference.
In case of questions, please contact:

Micropelt - a brand of EH4 GmbH. Email: [e-mail]. Telephone [phone]

Use and safety instructions:

 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 damaging due to condensation.

 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 Micropelt.

 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.

Intended use: 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.

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User manual and Datasheet

4 System description

This document defines the properties of Micropelt’s battery free, intelligent thermostatic radiator valve (iTRV).
MVA005 is an 868MHz EnOcean wireless actuator, which is self-powered through thermal energy harvesting.
It is used to single room control heating radiators with standard valve connection M30x1.5 (Section 13). To
operate the device, the unit must be paired with a compatible room controller or gateway unit supporting EEP
A5-20-06. The pairing is done either via manual 4BS Teach-In or trough EnOcean Remote Commissioning.
Once mounted and activated on the valve body, a calibration cycle starts to automatically adapt itself to the
individual valve and is ready for use. Adapter are available for a majority of non M30x1.5 valve bodies (Section

14).

Room controller time schedules can be conveniently used to set individual room temperatures at different
times and to a desired °C value. By lowering room temperatures in times of absence, heating costs can be
saved without any loss of comfort. Reducing the room temperature by only a few °C does further add to
reduction of heating energy consumption and respective CO2 pollution.

The actuator generates the required electrical energy for operation (motor, sensors and radio communication)
by means of a built-in thermoelectric generator (TEG) and therefore operates maintenance-free. It is powered
from the temperature difference between the radiator heat and ambient temperature (usually room
temperature). An additional energy source such as a battery or external power supply is not required. The
internal energy storage is fully charged upon delivery, so that sufficient energy is available for installation and
up to approximately one year of operation. In winter and heating season, the actuator then supplies itself
independently trough the converted heat of the heating circuit. Due to the surplus of generated energy in
winter, the internal storage provides sufficient energy for 365 days per year operation including transition
periods and summer.

The product is delivered in mounting position (off) with the valve plunger completely retracted. The drive does
recognize when installed on a valve body by means of internal force and travel distance measurement.
Unmounted activation does allow to execute Remote Commissioning operation (Instant SIGNAL telegram is
transmitted immediately after each activation from mounting position) but will always return the device back to
mounting position to switch off. The drive does have a built-in motor error detection "ACO". The ACO bit does
signal incomplete or unsuccessful reference runs from mounting, motor issues during normal operation as well
as motor runs from mounting position and back to mounting position (Section 8.2.6).

The actuator operates with the EnOcean equipment profiles EEP A5-20-06 in either valve position (% value
transmitted) or temperature setpoint using its internal temperature control loop (°C setpoint transmitted). The
device has a built-in flow temperature sensor to automatically switch its Radio communication cycle (2, 5 or
10 minutes) based on available radiator temperatures. Installation and activation will immediately set the radio
communication interval to every 2 minutes and for an installation period of 30 minutes to provide quicker
feedback (Section 8.2.9). The ambient temperature value transmitted during such installation period is the raw
and actual temperature (Without approximation and smoothing). The device transmits a variety of information
to the room control unit including flow and ambient temperature, received radio signal strength, radio
communication failure, window open detection (Refer to Section 8). The control units responds either with a
new position value in the range 0% (valve closed) to 100% (valve open) or temperature setpoint (0 ... 40°C).
Setpoint changes will be instantly processed and new position values are calculated.

The MVA005 has a red and a green LED to support and indicate successful or failed operations for activation
and deactivation (More details in Section 6).

The device is equipped with a dial for local user setpoint changes that are instantly transmitted to the room
controller. The controller however decides whether or not and how these local changes are accepted and
processed by responding with a corresponding telegram answer that includes or ignores the local change
request. In valve position mode, all local changes are transmitted as relative values. Changes in temperature
setpoint mode are added or subtracted to the current set point temperature and transmitted as absolute
temperature value on the controller (Section 8). Successful local inputs are confirmed by a corresponding
number of discreet ton signals. Successive inputs within a maximum time period of 5 seconds time are
transmitted as a result value to the room controller. Example: 2 x right (+ 2°C) followed by 2 tone signals.
Within the 5 seconds period 3 x left (-3°C) followed by 3 tones. The result of -1°C is transferred after 5 seconds

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MVA005
User manual and Datasheet

on the room control unit. There will be no further tone signal to confirm the result of -1°C. Incorrect inputs will
be displayed by an approx. 2 seconds long red LED signal. Failed attempts will require a waiting period of 2
seconds. Local changes will lead to an instant telegram transmission to the room controller. In case of no
response from the correspondent room controller, another telegram will be transmitted 1 second later.

Integrated temperature sensors (valve body and environment) are both used to control the radio interval and
internal temperature controller, window-detection as well as freeze protection. The ambient sensor is used to
measure the room temperature. During heating operation, the ambient sensor is influenced by the near-field
of the radiator as well as self-heating of the metallic device housing. The resulting temperature failure due to
offset is compensated on the basis of the flow sensor and a built-in temperature compensation
(approximation), as well as a subsequent smoothing function. Within the first 30 minutes after activation, the
actuator sends the actual ambient temperature without any corrections. After 30 minutes, the device sets the
ambient temperature to its smoothing start value to 20°C that will be kept as long as the calibration cycle takes.
The approximation process in a non-heating cycle takes 3 x 10 minutes. Device activation in an active heating
cycle will extend the start value and smoothing cycle to as long as the measured ambient and flow sensor
values stabilize with deviations smaller than 1°C. When operated in temperature setpoint, the use of an
external room temperature sensor is recommended which is then transmitted to the MVA005 with every 4BS
telegram through the room controller. Without external room sensor, the built-in ambient sensor is used with
the respective in accuracy given the nearfield radiator environment or any other related effects such as
mounting position, curtains, furniture. (See picture 4.1).

Anti-freeze protection uses the flow sensor integrated in the metallic valve connection. Standard freeze
protection is active at <6°C. With a temperature setpoint transmission of 0°C, than the freeze protection
temperature is also lowered to 0°C. It does not matter if the 0°C setpoint value was requested by radio or by
manual adjustment.

Alternate flashing of red and green LEDs in 0.5 second intervals signals a sensor error (short circuit or
interruption). In this condition, normal operation is not possible.

Window open detects any temperature drop within a time period of 2 minutes on the local ambient temperature
sensor. Once a given negative temperature change is detected, the device sets the DWO bit (Section 8.2.7)
and immediately reports the state transmitting a 4BS telegram to the room controller. Its transmitted ambient
temperature is the actual temperature value (no approximation or smoothing). The window open detection
function is limited to the transmission of data telegrams and setting the DWO bit, no further internal reactions
by the actuator apply. The detection of a temperature drop depends on a recognizable stream of cold air in
the close environment of the actuator. For a reliable detection, the drive must be installed in unspoilt situation
and on radiators below the respective window. Fully opened windows in winter season are usually reliably
detected at low outside ambient temperatures. Window in tilt position and heaters in faraway distance to the
window cannot be detected reliable. The window open function is independent of the selected communication
interval and automatically runs every 2 minutes. Should the temperature fall further and below freeze protection
temperature of 6°C (respectively 0°C), the drive automatically opens to prevent from freeze related damages.

Radio failures after 6 unsuccessful 4BS communication attempts in paired situation are reported with its status
bit RCE. The actuator automatically switches to its internal temperature control using the last received and
valid temperature setpoint from the control unit. With the lack of a valid temperature setpoint °C value (e.g.
SPS=0 operation), the internal default value of 21°C is used. Radio signal strength of the received telegram
(RSS) is also activated due to lack of incoming data telegrams. There is no change on the radio communication
cycle. The local offset function of the dial remains active and any local adjustments are calculated from a
default value 21°C. E.g. 5 x left decreases the setpoint from 21°C to 16°C, independent from the last received
setpoint value. Due to lack of response from the master control unit keeps the drive this setpoint and regulates
accordingly. Consecutive local changes are again calculated from the default value of 21°C, e.g. 3 x right =
24°C followed by 1x right = 22°C. The drive returns to normal operation, once the radio communication is re­established.

When permanently use in unheated rooms, the internal storage will be ultimately discharged. In such
circumstance, the drive automatically opens to 50% for recharging. For operation in unheated rooms, the valve
and its EEP A5-20-06 provide options to reduce and minimize energy consumption through either stand-by
operation (SBY Bit) or summer bit (SB) 8 hours radio interval. Using the local offset input, the drive can at any
time be activated from standby (SBY) and returns to normal operation.

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User manual and Datasheet

The MVA005 is equipped with hard - and software functions to simplify installation, control and real-time
monitoring. Apart from standard, manual 4BS teach-in are EnOcean Remote Commissioning (ReCom)
operations available to teach and configure the device prior deployment or during operation. ReCom is
operated with separate from 4BS and periodically transmitted SIGNAL (0x09) telegrams. Single or multiple
ReCom commands must be executed within an 8 seconds time period after the UNLOCK command. ReCom
can be used to set its link-table and change device-internal parameters such as control loop gain, temperature
offset parameter or readout of its internal storage value (Refer to Section 9.5).

The drive can be restarted by means of manual RESET (Section 6.5). Holding the dial in one of the two end
positions for 10 seconds restarts the drive, runs a reference run and activates the 30-minute maintenance
interval. The drive then communicates for the next 30 minutes in a 2 minute interval. The ambient temperature
is the effective measured temperature of the ambient sensor. After the maintenance interval, the temperature
approximation and smoothing function restarts. Existing teach-in connections to the room controller and
remote commissioning settings are retained during manual RESET.

4.1 Picture MVA005 with dial for
local control

Dial for local control with +/- marking.
One Red and Green LED are
positioned below the cover at marked
positions. The ambient temperature
sensor is centrally positioned between
both LEDs.

LED RED

Dial

LED GREEN

Temperature Sensor

below the cover

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MVA005
User manual and Datasheet

5 Energy-supply through thermal 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.

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User manual and Datasheet

6 User Control - Quick overview table

6.1 Installation with Manual Pairing (Teach-In)

No Objective Button

No.

1 Pairing from

mounting
position
(OFF)
OR from
normal
operation

2 Mounting Mount the actuator before

3 Reference run

and normal
operation

Turn dial to
end position
Left OR Right
and hold 5
seconds.

Turn to end
position
Left OR Right
for short press
(< 1 second)

Action LED or Tone

Unit transmits a teach telegram
(1x green LED), connects with
the controlling unit and confirms
the successful teach-in with a
second flash green LED.
The unit remains in mounting
position. Any actuator not in
mounting position will activate
the motor and return to
mounting position to switch off
the device.

executing run-in sequence and
normal operation.
Consider required adapter
(Section 14)
Unit executes run-in sequence
and enters normal operation.

Radio communication will occur
every 2 minutes and for a time
duration of 30 minutes after
activation. Communication after
30 minutes follow the 4BS
settings transmitted by the room
control unit.

Reasons for

activity

After 5
seconds 1x
green LED for
teach sent

Teach-in
successful:
1x green LED

Failure (not
teached):
3x red LED

No tone
signals.

Success:
1x green LED

Failure:
3x red LED

No tone
signals

failure

Controller or
gateway either
not present or
not in pairing
mode, so that
pairing fails

Mounting
failure (e.g.
missing
adapter),
Motor failure,
Gear failure
Unmounted will
return the
motor to
mounting
position and
switch off the
device.

6.2 Local offset

1 Local Offset

Operation in
Temperature
Setpoint (°C)
(Internal
control loop)

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Turn to end
position
Left OR Right
for short
press.

Turn dial left for 1 or up to 5
times until its end position:
Every successful actuation will
decrease the actual setpoint
temperature by 1°C and transmit
the new setpoint as absolute
value.

Turn dial right for 1 or up to 5
times until its end position:
Every successful actuation will
increase the target temperature
by 1°C.

Success:
1 … 5 tone
signals
according the
number of
inputs

Failure:
Red flashing
LED for 2
seconds. (Left
and right

No tone
signals:

No local
actuation
detected or
accepted.

Device is in
mounting
position.

MVA005
User manual and Datasheet

2 Local Offset

Operation in
Valve Position
(%)

Turn to end
position
Left OR Right
for short
press.

The temperature setpoint may
be changed by up to +/- 5°C.
Multiple local inputs within one
cycle time frame of 5 seconds
are internally cumulated to one
desired target value.

Individual local input cycles are
open for a max. time window of
5 seconds and concluded with a
telegram transmit including the
desired target temperature as
absolute °C temperature value.

Resulting changes in motor
position will only be executed
when the room controller
confirms the local change with
its responding and next data
telegram.
Turn dial left for 1 or up to 5
times until its end position:
Every successful actuation will
signalize the controller the
desired reduction in target
temperature with a relative value
(e.g. 0x7F for -1)

Turn dial right for 1 or up to 5
times until its end position:
Every successful actuation will
signalize the controller the
desired increase in target
temperature with a relative
value. (0x01 when +1)

The desired temperature
setpoint change communicated
to the controller may be
changed by up to +/- 5.
Multiple local inputs within one
cycle time frame of 5 seconds
are internally cumulated to one
desired target value.

Individual local input cycles are
open for a max. time window of
5 seconds and concluded with a
telegram transmit including the
desired target temperature as
absolute °C temperature value.

Resulting changes in motor
position will be executed when
the room controller confirms the
local change with its responding
and next data telegram.

inputs in one
cycle).

Wait for 10
seconds.

Success:
1 … 5 tone
signals
according the
number of
inputs

Failure:
Red flashing
LED for 2
seconds. (Left
and right
inputs in one
cycle).

Wait for 10
seconds.

No tone
signals:

No local
actuation
detected or
accepted.

Device is in
mounting
position.

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User manual and Datasheet

6.3 Deactivation and RESET

1 Deactivate,

Move to
mounting
position,
Switch off

Disassembly

2 RESET

followed by
normal
operation.

Turn to end
position
Left OR Right
and hold for at
least 5 sec.

Turn to end
position
Left OR Right
and hold for
10sec.

Green LED appears, than
release.

3x red LED indicates teach-in
failure which however does not
play any role when deactivating
the device. Motor moves back to
mounting position and device
switches off.

Reactivation in mounted position
will restart the device with no
changes to previously set
parameters including link table
settings to enter normal
operation.

Turn dial to left or right until its
end position and hold for at least
10 seconds until the 2nd green
LED appears, than release.

When mounted, teached and
active:
Device enters installation radio
cycle of 2 minutes for a 30
minutes duration. Transmitted
ambient temperature is the raw
and actual temperature (no
approximation, no smoothing).

In case of Radio communication
failure: Device switches to
Temperature setpoint and 21°C.

Success:
After 5
seconds 1x
green LED
followed by 3x
red LED

Failure:
No LED

No tone
signals

Success:

1x green LED
after 5
seconds
followed by a
2nd green
LED after
another 5
seconds
(10 seconds
in total).

No LEDs:

Try again and
hold the dial
end position
tight. Do not
release during
the 5 seconds
time period.

No LEDs:

Try again and
hold the dial
end position
tight. Do not
release during
the 10 seconds
time period.

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