APsystems ECU-B Instruction Manual

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APsystems Energy Communication Unit ECU-B
Installation / User Manual
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mobile app and more support
to help the installation.

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Table of Contents
1. Introduction........................................................................................................................................ 3
2. Interface Explanation..................................................................................................................... 4
2.1 Interface Layout................................................................................................... 4
2.2 Reset....................................................................................................................... 4
2.3 Power Connection Port.................................................................................... 5
2.4 Antenna................................................................................................................. 5
2.5 USB port................................................................................................................ 5
2.6 AP............................................................................................................................ 5
2.7 LED1.........................................................................................................................5
2.8 LED2........................................................................................................................5
3. Hardware Installation..................................................................................................................... 6
3.1 Preparation.............................................................................................................6
3.2 Selecting an Installation Location for the ECU-B....................................6
3.3 Installation.............................................................................................................6
3.4 Cable Connection............................................................................................... 7
3.5 Internet Connection...........................................................................................8
4. ECU-B User Interface......................................................................................................................9
4.1 Connecting to the ECU-B via the Local Wireless.....................................9
4.2 Add UID............................................................................................................... 10
4.3 Delete UID...........................................................................................................10
4.4 Homepage.......................................................................................................... 10
4.5 Data.......................................................................................................................11
4.5.1 Real Time Data.......................................................................................11
4.5.2 Power....................................................................................................... 12
4.5.3 Power generation statistics..............................................................12
4.6 Settings................................................................................................................13
4.6.1 Manage IDs............................................................................................. 13
4.6.2 Grid Profile............................................................................................. 13
4.6.3 Inverter Signal Level........................................................................... 13
4.6.4 Time management.............................................................................. 14
4.6.5 Manage the Network Connection.................................................. 15
4.6.6 Manage the WLAN connection...................................................... 15
4.6.7 WLAN PASSWORD.............................................................................16
4.6.8 Automatic System Check................................................................. 16
4.6.10 Language.............................................................................................. 17
4.6.11 Help.......................................................................................................... 17
4.7 EMA Registration function............................................................................ 18
4.7.1 Scan ECU’s ID......................................................................................... 18
4.7.2 Create Customer.................................................................................. 19
5. Technical Data.................................................................................................................................20
6. Contact Information..................................................................................................................... 22

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1. Introduction
The APsystems Energy Communication Unit (ECU-B) is the information
gateway for our inverters. The unit collects module performance data from
each individual inverter and transfers this information to an Internet
database in real time, requiring only a single data and power cable. Through
the APsystems Energy Monitoring and Analysis software, the ECU-B gives
you precise analysis of each inverter and module in your solar installation
from APP. The user-friendly interface lets you access your solar array in
seconds.
Features
Collects individual module and inverter statistics
Communicates in real time
Requires no additional wiring
The APsystems ECU-B is used in utility-interactive grid-tied applications,
and is made up of four key elements:
APsystems inverter
APsystems Energy Communication Unit (ECU-B)
ECU-B is part of the system and is the data link to the inverter.
APsystems APP (ECUAPP)
Based on android and iOS.
APsystems Energy Monitoring and Analysis (EMA)
Web-based monitoring and analysis system.
Figure 1
ECU APP
PV
Module
Ground
Neutral
Meter
Junction Box
Inverter
Internet EMA
Aps ystems Communicator
(EC U-R)
Apsystems Communicator
(ECU-B)
ECU APP
PV
Module
Ground
Neutral
Meter
Junction Box
Inverter
Internet EMA
Aps ystems Communicator
(EC U-R)

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2. Interface Explanation
2.1 Interface Layout
The ECU-B interface includes, (figure 2)from left to right, are Reset、
antenna(Wifi)、power connection port、antenna(Zigbee).
The sides from top to bottom ,are USB port,AP.
Reset Antenna(WIFI) Antenna(ZIGBEE)
Figure 2
2.2 Reset
Press the Reset button for three seconds or longer, and the ECU-B will
automatically return to the default settings.
The wireless password will be changed to “88888888”.
Power Connection Port
Invalid Ports
USB
AP

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2. Interface Explanation
2.3 Power Connection Port
The power connection port connects power through the power adapter.
2.4 Antenna
The antennas in the package should be connected to ECU-B. One antenna is
used for the communication between ECU-B and inverters, the other
antenna is used for the Wi-Fi connection between ECU-B and router.
2.5 USB port
The USB interface is reserved.
2.6 AP
Press the AP button to turn on AP. Then the ECU-B can be scanned by
phone. ECU-B will turn off it automatically in one hour.
Figure 3
2.7 LED1
LED1 will be on When the ECU-B works well.
2.8 LED2
LED2 will be on When the ECU-B connects to the sever.
LED1
LED2

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3. Hardware Installation
3.1 Preparation
Make sure you have the following components ready before
beginning to install the ECU-B:
A dedicated standard AC electrical outlet (located as close to the
array as is possible).
A broadband Internet connection available for your use.
A broadband router with either a CAT5 Ethernet, or a wireless
router.
A phone with APP (see page 11).
3.2 Selecting an Installation Location for the ECU-B
Choose a location that is as close to the array as possible
The ECU-B is NOT rated for outdoor use, so if installing outdoors,
ensure it is put in a waterproof box, and the antenna is placed
outside for communication quality.
3.3 Installation
1) Using a Wall Mount
When mounting the ECU-B to a wall, make sure to select a cool, dry
indoor location.
Depending on the wall surface you are mounting the ECU-B to, use
either two drywall screws or wall anchors, installed 100 mm apart
(The drywall screws and wall anchors are not included in the ECU-B
kit).
Align and slide the ECU-B onto the mounting screws.
Figure 4

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3. Hardware Installation
3.4 Cable Connection
1) Using a Wall Mount
Connect the adapter to the power connection port on the top of the
ECU-B.
Figure 5
The antennas used for Zigbee port and WI-FI port are exactly the same
type, no need to distinguish.

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3. Hardware Instrallation
2）Power Distribution Cabinet Installation
Install the socket on the guide rail (The socket will not be supplied
by APsystems Please prepare it yourself).
Connect the adapter to the power connection port on the top of the
ECU-B.
Figure 6
Do not put the antenna inside a metal box, that will block the signal.
If ECU-B is placed in distribution box or the roof is metal, please use
this long cable antennas, and put them outside the box or on roof.
The long cable antenna (2.4G) is common in market,can be purchased
in electrical store or online store.
3.5 Internet Connection
Figure 7
Use ECU-B internal WLAN (see Manage the WLAN connection ).

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4. ECU-B User Interface
Please use mobile browser to scan the QR codes to download ECUAPP :
（iOS） （Android）
4.1 Connecting to the ECU-B via the Local Wireless
Open Wi-Fi setting in your smartphone, select ECU-B hotspot.
Connecting to the ECU-B via the Local Wireless, the default
password is “88888888”.
Open the ECUAPP.
Check ECUAPP is connected to ECU-B in the Home page.
Before the first time to add the UID, users must set the date and time in
advance.
Please refer to the 4.6.3 Time Management.

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4. ECU-B User Interface
4.2 Add UID
Click "Settings", select "ID Management", input the UID manually or
scan the UID by camera. If there is no need to modify, then click
"SYNC" to update the UIDs onto ECU.
4.3 Delete UID
Select the UIDs, click "DELETE" then click "SYNC". The UIDs
selected are deleted on the ECU-B.
4.4 Homepage
Click "Home" at the bottom of the page.
The information about systems info of
ECU-B,ECU-B ID, version , total number of
inverters,the number of connected
inverters, intraday power output, historical
Power output and current system power
shall Be displayed.

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Maximum monitoring 4 PV Modules.
4. ECU-B User Interface
Green light indicates the mobile phone is connected to the
ECU-B.
Grey light indicates the mobile phone fails to connect to the
ECU-B.
4.5 Data
4.5.1 Real Time Data
This page shall display the added inverter. According to different
models of inverter, each inverter would have the corresponding
modules displaying the real time power.
Click "Module", the detailed information of the inverter shall be
displayed, including inverter ID, PV module power, grid voltage,
frequency and temperature.
Green panel indicates the inverter is successfully connected.
Grey panel indicates the inverter is disconnected.
4.

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ECU-B User Interface
4.5.2 Power
To This page displays the daily
system power curve. Click "Power" at
the real time data page to view the
historical system power curve.
4.5.3 Power generation statistics
Press “Energy” at the real-time data page to view the system power
generation of the solar system.
The statistics of power generation shall be displayed.
The energy histogram of current week:

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4. ECU-B User Interface
4.6 Settings
Click "Settings" and enter into the
"settings page".
4.6.1 Manage IDs
Please refer to 4.2 to add UID.
4.6.2 Grid Profile
User needs to select grid profile when installing the system.
4.6.3 Inverter Signal Level
Show the direct communication quality between each inverter and
ECU.
If you select the wrong grid profile, the inverters will not work normally.

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4. ECU-B User Interface
Enter the Detail page, you can view the inverters’ parameters. Click
Read, ECU will get the parameters from inverters. You can swipe
down the ID list to view the result after about 5 minutes later.
4.6.4 Time management
Enter the page, the time of ECU-B shall be displayed on the right
side of the page.
Click "date" or "time" to modify.
Click "Sync phone time", APP will set the date and time of the
phone for ECU, user doesn't need to set date and time manually.

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4. ECU-B User Interface
4.6.5 Manage the Network Connection
ECU-B's wired network setting has 2 options: automatically obtain
an IP address or use a fixed IP address.Obtaining an IP address
automatically means the router would distribute IP to ECU-B
automatically. When choose user fixed IP, users shall use the
following IPs.
4.6.6 Manage the WLAN connection
The page will show up ECU's wireless connection status. Click
"Refresh" button, the available SSID would show up.
Click the SSID and enter the password.
The ECU-B would restart after sending the password. Please
reconnect the ECU-B.
After the password is sent, ECU-B will restart. Please reconnect to ECU-B.

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4. ECU-B User Interface
4.6.7 WLAN PASSWORD
Please reconnect the ECU-B hotspot
after setting the password. On the
page, you can change Password.
If user forget the password,
hardware reset could be carried out.
The initial password would be
"88888888".
4.6.8 Automatic System Check
Check the running status of the
system, if there are issues, click the
icon to view the reason and get the
way to solve it.

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4. ECU-B User Interface
5.6.9 Inverter Connection Progress
User can see the connection
progress of the inverters, 100%
means the connection is finished.
4.6.10 Language
Select Language.
4.6.11 Help





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4. ECU-B User Interface
4.7 EMA Registration function
Register the inverters’ID into ECU on
ID Management screen. Make sure
the IDs have been synced to ECU.
4.7.1 Scan ECU’s ID
Scan the ECU’s ID which is a 12 digits
number starting with a 2, then click
OK.

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4. ECU-B User Interface
4.7.2 Create Customer
Connect your phone to internet
instead of to the ECU. Then enter the
information and click “Sync EMA”.
User name, password,city and
country/state are necessary.

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5. Technical Data
Specifications subject to change without notice.
Please ensure you are using the most recent update found at www.APsystems.com.
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this device
must accept any interference received, including interference that may cause undesired
operation.
This Class B digital apparatus complies with Canadian ICES-003.
Communication Interface
Integrated Wi-Fi
802.11g/n
Communication
ZigBee 2.4 GHz
Wireless security
WEP,WPA2-PSK
USB Interface
5Vdc-0.5A Output
Power Requirements
AC Adapter
5V 2A
Power Consumption
1.7W
Maximum Communicating PV Module
Qty
4
Mechanical Data
Dimensions (W×H×D)
122mm×87mm×25mm(4.8’’×3.4’’×0.98’’)
Weight
150g(0.33lbs)
Ambient Temperature Range
-20°C to +65°C(-4℉to +149℉)
Cooling
Nature Convection; No Fans
Enclosure Environmental Rating
Indoor - NEMA 1(IP20)
Features
Compliance
IEC 60950-1, EN60950-1, IEC 60529, EN
60529, ANSI/UL 60950-1,
CAN/CSA C22.2 No.60950-1, UL50E, FCC
part 15, EN61000-6-1,
EN61000-6-3, ICES-003, AS NZS 60950-1,
GB/T17799
2020/11/19 REV1.0