Daikin EKMBPP1 User manual

Installation manual
Modbus adapter English
Installation manual
Modbus adapter
EKMBPP1

Table of contents
Installation manual
2
EKMBPP1
Modbus adapter
4P720139-1B – 2023.09
Table of contents
1 About this document 3
2 Specific installer safety instructions 4
3 About the kit 7
3.1 Components....................................................................................... 7
3.2 Basic parameters ............................................................................... 8
3.3 Compatibility ...................................................................................... 8
4 About the box 9
4.1 To unpack the adapter ....................................................................... 9
5 Installation 10
5.1 Precautions when installing the kit..................................................... 10
5.2 Preparing the installation site............................................................. 10
5.3 To install the Modbus adapter............................................................ 11
5.3.1 To install the Modbus adapter with the KRP1BC101
installation box ........................................................................ 11
5.3.2 To install the Modbus adapter PCB with field supplied casing 13
5.4 Connecting the electrical wiring ......................................................... 13
5.4.1 Overview of electrical connections.......................................... 14
5.4.2 To connect the power supply.................................................. 15
5.4.3 To connect the P1P2 wiring.................................................... 16
5.4.4 To connect the RS485 wiring.................................................. 17
6 Configuration 18
6.1 Status LEDs ....................................................................................... 18
6.2 P1P2 communication ......................................................................... 20
6.3 Modbus protocol ................................................................................ 20
6.3.1 Modbus address range ........................................................... 20
6.3.2 Modbus registers .................................................................... 21
6.3.3 Modbus master timeout .......................................................... 22
6.3.4 Terminating resistor settings................................................... 23
6.4 Control functions ................................................................................ 23
6.4.1 Unit control.............................................................................. 23
6.4.2 Control update mode .............................................................. 24

1 About this document
Installation manual
3
EKMBPP1
Modbus adapter
4P720139-1B – 2023.09
6.4.3 Control limiting ........................................................................ 26
6.4.4 VAM-specific control ............................................................... 27
6.4.5 Smart Grid control................................................................... 27
6.5 Readback data................................................................................... 28
6.5.1 Remote controller readback.................................................... 28
6.5.2 Group readback ...................................................................... 28
6.5.3 Unit readback.......................................................................... 29
6.5.4 Error codes ............................................................................. 30
6.6 Smart Grid.......................................................................................... 31
6.7 Software update................................................................................. 33
7 Hand-over to the user 33
8 Disposal 34
9 Technical data 35
9.1 Wiring diagram................................................................................... 35
10 Appendix 36
10.1 Modbus addresses............................................................................. 36
1 About this document
Target audience
Authorised installers
About the documentation
The instructions delivered with the kit are intended to guide you through
the installation of the EKMBPP1 adapter into a KRP1BC101 installation
box and through the connection and configuration of the EKMBPP1
adapter.
Read this installation manual prior to use and keep it for future
reference. Also read the installation manual of the indoor unit before
installing the EKMBPP1 adapter.
Damage caused by non-observance of these instructions are not under
the responsibility of Daikin.

2 Specific installer safety instructions
Installation manual
4
EKMBPP1
Modbus adapter
4P720139-1B – 2023.09
Documentation set
This document is part of a documentation set. The complete set
consists of:
▪General safety precautions:
▪ Safety instructions that you must read before installing
▪ Format: paper (in the box of the indoor unit)
▪Installation manual:
▪ Installation instructions
▪ Format: paper (supplied in the kit)
Latest revisions of the supplied documentation may be available on the
regional Daikin website or via your dealer.
The original instructions are written in English. All other languages are
translations of the original instructions.
2 Specific installer safety
instructions
Always observe the following safety instructions and regulations.
General
DANGER
All wiring MUST be performed by an authorised electrician and
MUST comply with the applicable national wiring regulation.
Possible consequence: property damage and electrocution.

2 Specific installer safety instructions
Installation manual
5
EKMBPP1
Modbus adapter
4P720139-1B – 2023.09
Installation (see "5 Installation" [4 10])
DANGER: RISK OF ELECTROCUTION
▪ Turn off the indoor unit power supply before mounting the
PCB.
▪ Do NOT handle the PCB with wet hands.
▪ Do NOT let the PCB get wet.
▪ Do NOT disassemble, modify or repair the PCB.
▪ Turn OFF the indoor unit power supply if the PCB is
damaged.
▪Possible consequence: electrocution.
DANGER: RISK OF ELECTROCUTION
Connect the earth wires correctly. Possible consequence:
electrocution.
DANGER: RISK OF ELECTROCUTION
Do NOT connect or turn on power supply before you have
mounted the adapter, connected the electrical wiring and have
closed the adapter.
DANGER: RISK OF ELECTROCUTION
When powered by the indoor unit or any other non-SELV
(Safety Extra Low Voltage) power supply, all external wiring
and electrically attached devices MUST be double insulated to
prevent access by non-qualified persons. When this is not
possible, the EKMBPP1 MUST be powered by a SELV power
supply.
DANGER: RISK OF ELECTROCUTION
Do NOT turn on the indoor unit power supply before you have
mounted the PCB inside the unit (with or without installation
box or mounting plate), connected the electrical wiring and
closed the indoor unit or indoor unit switch box. Possible
consequence: electrocution.

2 Specific installer safety instructions
Installation manual
6
EKMBPP1
Modbus adapter
4P720139-1B – 2023.09
WARNING
When applying this Modbus adapter (EKMBPP1), the
installation requirements described in the indoor and outdoor
unit installation manuals of the system to which this Modbus
adapter is connected, including any countermeasures, remain
applicable.
For systems NOT using R32 refrigerant, this Modbus adapter
can be the only (and main) remote controller connected. For
systems using R32 refrigerant, the installation of additional
remote controllers may be required.
Hand-over to the user (see "7 Hand-over to the user" [4 33])
DANGER
▪ Do NOT disassemble, modify, or repair the adapter. This
can cause fire, electrical shock, or injury.
▪ Do NOT allow the adapter to get wet or use it when bathing
or doing similar activities with water. This can cause
electrical shock or fire.
▪ Do NOT use the adapter near medical equipment, or
persons using cardiac pacemakers or defibrillators. This
can cause life-threatening electromagnetic interference.
▪ Do NOT use the adapter near auto-control equipment such
as automatic doors or fire alarm equipment. This can cause
accidents due to erroneous equipment behaviour.
▪ In case of abnormal odour or sound, overheating, or smoke
coming out of the adapter, immediately disconnect the
indoor unit from its power supply. Otherwise, this can lead
to fire or malfunction. If this happens, consult your dealer.
▪ In case you drop or damage the adapter, disconnect the
indoor unit from its power supply. Otherwise, this can lead
to fire or malfunction. If this happens, consult your dealer.

3 About the kit
Installation manual
7
EKMBPP1
Modbus adapter
4P720139-1B – 2023.09
3 About the kit
The EKMBPP1 kit is a Modbus interface to monitor and control the VRV
and Sky Air ranges of air conditioners, as well as the VAM and VKM
ventilation units. The interface is compatible with units that have a P1P2
remote controller connection, allowing control of up to 16 units in a
single group. Functionality includes:
▪ Group control of unit settings (setpoint, fan speed, operation mode,
airflow direction, on/off state)
▪ Control over the lock state of individual remote controller buttons
▪ Control limiting (limit possible user adjustments to specified ranges)
▪ Control over settings specific to VAM and VKM units (fan speed,
damper control, on/off state)
▪ Unit monitoring (group and individual readback of unit data)
▪ Smart Grid control on Sky Air ranges.
3.1 Components
GND DB- DA+
X2M
X7M
P2
NC
P1
0V
NC
a
a
a
a
LED1~4
HAP
SS2 SS3
SS1
DS1
X1A
+V
X1A Power supply connector
X2M RS485 connector (Modbus)
X7M P1P2 connector
LED*, HAP Status LEDs (see "6 Configuration" [4 18] for more information about LED
behaviour)
DS1 DIP switch
SS* Slide switches

3 About the kit
Installation manual
8
EKMBPP1
Modbus adapter
4P720139-1B – 2023.09
aMounting holes
3.2 Basic parameters
Parameter Value
Power supply Regulated voltage: 15~24VDC, 120mA
maximum 3W
Operating temperature -10°C~50°C
Storage temperature -25°C~70°C
Relative humidity maximum 95% at 40°C, non-condensing
3.3 Compatibility
Make sure the indoor unit is compatible with the kit.
For an exhaustive list of compatible models and the corresponding
required installation box, see the compatibility matrix or data book of the
indoor unit or the general catalogue.

4 About the box
Installation manual
9
EKMBPP1
Modbus adapter
4P720139-1B – 2023.09
4 About the box
4.1 To unpack the adapter
b
a
c
e
d
aEKMBPP1 Modbus adapter PCB
bInstallation manual
cPCB clamp (4×)
dCable gland and locknut (M20×1.5)
eWire harness for power supply (2×)

5 Installation
Installation manual
10
EKMBPP1
Modbus adapter
4P720139-1B – 2023.09
5 Installation
5.1 Precautions when installing the kit
DANGER: RISK OF ELECTROCUTION
▪ Turn off the indoor unit's power supply before installing the
kit.
▪ Do NOT handle the kit with wet hands.
▪ Do NOT let the kit get wet.
▪ Do NOT disassemble, modify or repair the kit.
▪ Turn OFF the indoor unit's power supply if the kit is
damaged.
▪Possible consequence: electrocution.
WARNING
When applying this Modbus adapter (EKMBPP1), the
installation requirements described in the indoor and outdoor
unit installation manuals of the system to which this Modbus
adapter is connected, including any countermeasures, remain
applicable.
For systems NOT using R32 refrigerant, this Modbus adapter
can be the only (and main) remote controller connected. For
systems using R32 refrigerant, the installation of additional
remote controllers may be required.
5.2 Preparing the installation site
The EKMBPP1 is an option PCB. The installation procedure and
installation location of the PCB vary depending on the unit(s). See the
installer reference guide of the indoor unit for more information.
The KRP1BC101 installation box described in this manual has to be
installed onto the indoor unit. In case of a field supplied casing, see the
installation manual of that casing for more information on the installation
location. See "5.3 To install the Modbus adapter" [4 11] for installation
instructions.