Hoymiles DTU-G100 User manual

Version 2.1 (August 2020)

© 2019 Hoymiles Converter Technology Co., Ltd. All rights reserved. 2
DTU-G100 3 Gen
Contents
1. Important Safety Information .................................................................................................................................... 3
1.1 Read this First ...................................................................................................................................................... 3
1.2 Safety Instructions ............................................................................................................................................... 3
1.3 User ........................................................................................................................................................................ 3
1.4 Support and Contact Information ....................................................................................................................... 3
1.5 Other Information ................................................................................................................................................. 4
2. About Hoymiles Microinverter System .................................................................................................................... 4
2.1 The Microinverter ................................................................................................................................................. 4
2.2 The DTU ................................................................................................................................................................ 4
2.3 The Hoymiles Monitoring Server ....................................................................................................................... 4
3. DTU Installation ...................................................................................................................................................... 5
3.1 System Capacity .................................................................................................................................................. 5
3.2 Basic Conditions Required ................................................................................................................................. 5
3.3 Dimensions ........................................................................................................................................................... 5
3.4 Interface Layout ................................................................................................................................................... 5
3.5 Local Install Assistant .......................................................................................................................................... 6
3.6 System Installation Sequence ............................................................................................................................ 6
3.7 DTU Installation Procedure ................................................................................................................................ 6
4. Site creation on HMP ................................................................................................................................................. 8
5. Customer Login .......................................................................................................................................................... 8
6. Complete Installation Map ........................................................................................................................................ 9
7. Browse the Web Station ............................................................................................................................................ 9
Log in your account, browse the web station. ............................................................................................................ 9
8. View Phone APP ...................................................................................................................................................... 10
9. LED indicator working status description .............................................................................................................. 10
10. Troubleshooting ...................................................................................................................................................... 11
11. Datasheet ................................................................................................................................................................ 11

© 2019 Hoymiles Converter Technology Co., Ltd. All rights reserved. 3
DTU-G100 3 Gen
1. Important Safety Information
1.1 Read this First
This manual includes important instructions for installing and maintaining the Hoymiles Data Transfer
Unit (DTU).
1.2 Safety Instructions
l Note that only professionals can install or replace DTU.
l Do not try to repair DTU without Hoymiles’ approval. If DTU is damaged, please send the DTU back
to your installer for repairing/replacing. Disassembling DTU without Hoymiles’ approval will invalidate
remaining of the warranty period.
l Please read all instructions and warnings on the technical specifications carefully.
l Do not use Hoymiles products in a way that is not suggested by manufacture. Doing so may cause
death or injury to persons or damage to equipment.
1.3 User
This manual is only for professional installation and maintenance personnel to use.
1.4 Support and Contact Information
If you have technical queries concerning our products, please contact your system installer or distributor.
If further support is required, contact Hoymiles’ support at this link.
l www.hoymiles.com
l Hoymiles customer service center: [email protected]
Symbol
Usage
Indicates a hazardous situation that can result in deadly electric shock hazards, other
serious physical injuries, or fire hazards.
Indicates directions which must be fully understood and followed in entirety to avoid
potential safety hazards including equipment damage or personal injury.
Indicates this points out that the described operation must not be carried out. The reader
should stop, use caution, and fully understand the operations explained before
proceeding.

© 2019 Hoymiles Converter Technology Co., Ltd. All rights reserved. 4
DTU-G100 3 Gen
1.5 Other Information
Product information is subject to change without notice. The user manual will be updated frequently, and
please refer to Hoymiles official website at www.hoymiles.com for the latest version.
2. About Hoymiles Microinverter System
2.1 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 conversion efficiency up to 96.7% and MPPT efficiency up to 99.9%, Hoymiles microinverters rank
into the first class of the world’s Microinverter industry.
2.2 The DTU
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 2.4GHz Proprietary RF (Nordic), collecting the
operation data of the system. Meanwhile, the DTU connects to the Internet via router and communicates
with Hoymiles Monitoring Server. The microinverter system operation data will be uploaded to Hoymiles
Monitoring Server via DTU.
2.3 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 staff. The following diagram shows the Hoymiles
Microinverter system.

© 2019 Hoymiles Converter Technology Co., Ltd. All rights reserved. 5
DTU-G100 3 Gen
3. DTU Installation
3.1 System Capacity
The DTU is capable of monitoring up to 99 pieces of single unit or 49 pieces of two in one unit or 24
pieces of four in one unit. If the communication between the DTU and microinverter caused by the
installation conditions, the number of PV modules that the DTU can monitor may be reduced.
3.2 Basic Conditions Required
Before installing the DTU, ensure the site meets the following requirements:
l The straight distance between DTU and Microinverter shall be less than 5 meters.
l It should be one meter above the ground, 0.8 meters away from the corner.
l Stable Internet reception.
The environmental requirements for DTU installation:
l Away from dust, liquid, acidic, or corrosive gas.
l Tempe r atu r e is b etw e e n -20ºC and 55ºC.
3.3 Dimensions
3.4 Interface Layout
Item
Description
A
USB Connector
B
Status Indicator
C
Reset Bottom
D
SIM Card Slot

© 2019 Hoymiles Converter Technology Co., Ltd. All rights reserved. 6
DTU-G100 3 Gen
3.5 Local Install Assistant
Local Install Assistant is a new function integrated with DTU-G100 3rd Gen, please download the
Installer App (for installer/distributor use only) first.
DTU-G100 has improved from the previous generation of DTU product, and developed with this new
function that allows installer:
A. Station overall Inverters status indication allows the installer to see how many MI under this
DTU is working properly (and the details for each MI) and how many is abnormal (and the details for
each MI) with one glance of eyes;
B. Add the Connection status, which will display the signal strength between each MI with
connected DTU, so that installer can adjust the DTU installation location accordingly. This function
will simplify the DTU installation, and avoid the second visit for installer due to the poor connection
between DTU and certain MI.
Note: Please refer to “Hoymiles Local Install Assistant Technical Note” for more details.
3.6 System Installation Sequence
3.7 DTU Installation Procedure
(1) Install the PV Modules and microinverters
Please refer to the Microinverter’s Manual or Quick Installation Guide for the detail installation steps.
1. Install
Microinverters and
PV modules
2. Install and power
on the DTU
3. Create a site on
Monitoring account
4. View system
performance
5. Complete
installation map

© 2019 Hoymiles Converter Technology Co., Ltd. All rights reserved. 7
DTU-G100 3 Gen
(2) Locate the DTU
The maximum communication distance of Hoymiles DTU is 150m in open space. The walls, roofs, or
other obstacles in between will affect the signal and reduce the communication distance in the real
installation.
The range of signal reduction for possible obstacles at the site has been shown below:
Material
Relative signal range reductions
Wood/Glass
0-10%
Stone/Pressed cardboard
10%-40%
Reinforced concrete (reduction increases with the
amount of reinforcement)
10%-90%
Metal
Up to 100%
Therefore, the DTU shall be placed as close to the microinverters as possible at the site to ensure
good communication between DTU and microinverters.
(3) Insert SIM Card
Insert the SIM card into the card slot on the side of DTU.
(4) DTU Installation
a. Connect the DTU to the adapter and plug it into the wall socket. (Figure 1)
Figure 1
b. If using Power Strip, please make sure it is placed at least 1 meter above the ground and try to
install the DTU 90 degrees vertical to the ground as much as possible (figure 2).
Figure 2
Note：Please do not install the DTU direct above the metal or concrete to prevent the signal dilution.

© 2019 Hoymiles Converter Technology Co., Ltd. All rights reserved. 8
DTU-G100 3 Gen
(5) Start Procedure
Once the DTU is powered on, the red, green and blue lights will flash for one second in turns, then
the blue light will turn on for 40 seconds for DTU self-checking. After this, the green light will be
flashing until Networking completed.
Note：
(1) Non-professionals do not modify other parameters.
(2) The “Reset” button on the DTU shell is only for customers who use the enterprise WiFi.
4. Site creation on HMP
A. Install Hoymiles Installer APP by searching “Hoymiles” at the App Store (IOS) or Play Store
(Android).
B. Open the APP and login in with your installer account name and password. If you are a new
installer with Hoymiles, please apply an Installer account from your distributor in advance.
C. Add Station, select the “Station” tab on the bottom, then select “⊕” on the right top side of the
page.
D. Select “Quick” for Single-DTU and “Profession” for Multi-DTU.
E. Please fill in the station details accordingly, and press “Next” after completed.
F. Press “Add DTU ID”, scan the DTU ID (or you can manually input ID) and press “Next” after
complete.
G. Click “Start binding” and choose the angle and tilt base on the installation.
H. Scan the Microinverter ID (or you can manually input the ID) and click the tick after completing
each ID input. Press “Finish” once all Microinverter ID has been input.
I. Disable the Scan function on the top of the right-hand side and design the Layout base on the
installation. Click the tick box on the top of the right-hand side, and then select “Next” after
completing the design.
J. Upload a picture of the site and select “Finish” to complete the site creation.
K. The new site will appear on the Station list from the Installer account.
L. Please click the “Networking” button after the power station is created.
M. Please wait about 30 minutes, the station will show online, and all the MI-IDs are found.
5. Customer Login
A. Please download the End User App. You can search “Hoymiles” at the App Store (IOS) or Play
Store (Android).
B. Log in with the Password and Username that has been set up by Installer on the previous step
(Section 6 step e), and press “Login”.
C. Customers will able to view all details once the data start to upload, normally it will need around
30 minutes for the first data coming through.
D. Customers can also view the Microinverter generating details via accessing the HMP monitoring
platform website at https://world.hoymiles.com.

© 2019 Hoymiles Converter Technology Co., Ltd. All rights reserved. 9
DTU-G100 3 Gen
6. Complete Installation Map
When the system is energized, and the DTU detects the microinverters, you need to complete the
installation map.
A. Peel the serial number label from the DTU and place it on the installation map.
B. Complete system information of the installation map shown below.
7. Browse the Web Station
Log in your account, browse the web station.

© 2019 Hoymiles Converter Technology Co., Ltd. All rights reserved. 10
DTU-G100 3 Gen
8. View Phone APP
Download mobile phone APP by search “Hoymiles” at App Store (IOS) or Play Store (Android), log in
with customer/installer account name and password, all installed Microinverters operating details will be
able to view from there.
9. LED indicator working status description
Red Light
Description
Flashes every 1 second
No SIM Card
Flashes every 0.5 seconds
DTU disconnect with server
Blue Light
Description
Flashes every 1 second
No ID
Flashes every 0.5 seconds
Received data from server
Green Light
Description
Flashes every 0.5 seconds
The search ID is incomplete
Lights up constantly
Normal
RED+GREEN+BLUE
Description
Each color flashes once every 1 second
Power on
Each color flashes twice every 1 second
Firmware upgrade