Hoymiles DTU-MI User Manual
DTU-MI
User Manual
Data Transfer Unit
(model: DTU-MI)
DTU-MI
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Table of contents
Important Safety Information ..................................................................................................... 2
Read this First .................................................................................................................... 2
Safety Instructions ............................................................................................................. 2
User ................................................................................................................................... 2
The Hoymiles Microinterver System ......................................................................................... 3
Basic DTU Operation ................................................................................................ ................ 4
LCD Screen Display at Start Up ......................................................................................... 4
Normal Operation............................................................................................................... 5
DTU Local Interface ........................................................................................................... 6
DTU Home Interface .......................................................................................................... 6
View Project ....................................................................................................................... 7
Ground Fault Reset ............................................................................................................ 9
Time Setting ....................................................................................................................... 9
Device ID Management ................................................................................................... 10
DTU Installation ................................ ................................................................ ...................... 12
System Capacity .............................................................................................................. 12
Basic Conditions Required ................................ ............................................................... 12
Installation Sequence ....................................................................................................... 13
Complete Installation Map ...................................................................................................... 18
Confirm Installation Successfully ............................................................................................ 18
Browse the Web Station ......................................................................................................... 19
View Phone APP .................................................................................................................... 19
Troubleshooting ...................................................................................................................... 20
LCD Screen Displays “NC” .............................................................................................. 20
The Link Number is less than Total Number of Microinverters .......................................... 20
Datasheet ........................................................................................................................ 21
DTU-MI
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Important Safety Information
Read this First
This manual includes important instructions for installing and maintaining the Hoymiles data
transfer unit(DTU-MI).
Safety Instructions
Note that only professionals can install or replace DTU.
Don't try to repair DTU because it contains parts that are not available to users. If DTU is
damaged, please send the DTU back to our dealer for repair. Disassembling DTU privately will
invalidate the warranty period.
Please read all instructions and warnings on the technical specifications and the DTU carefully
User
This manual is only for professional installation and maintenance personnel to use.
Support and Contact Information
If you have technical queries concerning our products, please contact your system installer. If further
support is required, contact Hoymiles support at this link.
http://www.hoymiles.com
Hoymiles customer service center
Tel:+86-0571-8977515
Hoymiles Converter Technology Co. , Ltd.
No.18 Kangjing Road, Hangzhou, 310015, China
Tel: +86-571-28056101
E-mail:sales@hoymiles,com
DTU-MI
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The Hoymiles Microinterver System
The DTU is the key component in Hoymiles microinverter system. It works as the communication
gateway, which operates between the Hoymiles microinverters and the Hoymiles Monitoring Server.
The DTU communicates with the microinverter wirelessly via 2.4 G RF, collecting the operation data
of the system. Meanwhile, the DTU connects to the Internet via router or GPRS and communicate
with Hoymiles Monitoring Server. The microinverter system operation data will be uploaded to
Hoymiles Monitoring Server via DTU.
The following diagram shows the DTU in the system.
Other Elements In the Hoymiles Microinverter System
The Microinverter: It converts the DC output of solar modules into grid-compliant AC power. It
sends the output information of PV panels and the operation data of the microinverters to the DTU,
which is the hardware basis of the panel-level monitoring.
With efficiency up to 96.7% and MPPT efficiency up to 99.9%, Hoymiles microinverters rank in the
first level around the world.
The Hoymiles Monitoring Server: It collects the operation data and status of the microinverters
in the system, and provides the panel-level monitoring for the users and maintenance staffs.
DTU-MI
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Basic DTU Operation
LCD Screen Display at Start Up
When the DTU starts up, it goes through the initial boot sequence. During this sequence, the DTU
LCD screen displays start-up progress as shown:
BOOT SYS setup
10:26:30
System setup…
10:27:55
ETH_BSP_Config
10:27:55
IP: 0.0.0.0
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Normal Operation
When the DTU completes the start up process and obtains the IP address, normal operation begins.
During the normal operation, the LCD screen displays the basic operation status of the system,
and the two screens shown as below alternate all the time.(screens 1 and 2 will appear when you
configure the Internet access).
(1) (2)
The data indicates:
(1) Web connection information: “YC”, this means the DTU is connected to the Internet. If it is
“NC”, the DTU is not connected to the Internet.
(2) Time, e.g. 10:27:55.
(3) Local IP address, e.g.192.168.1. XXX.
(4) Data of the real-time output power in watts, e.g.0.16kW.
(5) Data of the today’s output energy of the system in kWh, e.g. 0.07kWh.
(6) The total number of microinverters in this system, e.g. ALL: 05.
(7) The number of microinverters normally communicating with DTU, e.g. LINK: 01.
(8) _XXXX, the first two indicate CSQ (IOT card connect Internet signal strength), last two
indicate Internet transfer status.
(9) --XXXX, Indicates the ID of the current search.
YC 10:27:55 --XXXX
IP: 192.168.1.122
0.16Kw 0.07kWh
ALL:05 LINK:05
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DTU Local Interface
The DTU has an embedded web server, which enables you to view the operation data and status of
the system, manage the devices and clear fault locally via a browser. You need to get your
computer connected to the same network with DTU to open the DTU local interface in your browser
by entering the IP address shown on the LCD screen.
DTU Home Interface
The home interface shown below will turn up first when you enter the IP address into the browser.
In the home interface, the left side displays the basic information of the system, including Total
Output Power, Total Energy, Today Energy and CO2 Saved. the middle form displays the operation
data of each microinverter, including PV Voltage, Grid Voltage, Grid Frequency, Grid Power, Today
Energy and Internal Temperature. The upward side displays the total number of microinverters, the
number of connected microinverters and the number of unconnected microinverters.
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