SOLIS Solis-EPM1-5G User manual

Installation and Operation Manual
Solis 5G Series Export Power Manager
Ginlong Technologies Co., Ltd.
Ginlong Technologies Co., Ltd.
No. 57 Jintong Road, Binhai Industrial Park, Xiangshan, Ningbo,
Zhejiang, 315712, P.R.China.
Tel: [phone]
Fax: [phone]
If you encounter any problem on the EPM, please find out the EPM S/N and contact us,
we will try to respond to your question ASAP.
Please adhere to the actual products in case of any discrepancies in this user manual.
Ver 1.0

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1. Introduction
2. Safety Instructions
2.1 Safety Symbols
2.2 General Safety Instructions
2.3 Notice For Use
3. Overview
3.1 Front Panel Display
3.2 LED Status Indicator Lights
3.3 Keypad
3.4 LCD
4.1 Select Location for the Inverter
4.2 Mounting the EPM
4.3 Electrical Connections
6. Operation
5. Commission and decommission
5.1 Commission
5.2 Decommission
1.1 Product Description
1.2 Packaging
6.2 Information
6.1 Main Menu
4. Installation
6.3 Settings
6.4 Advanced Info.
6.5 Advanced Settings
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Contents
29
30
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7. Troubleshooting
8. Specifications
28
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6.6 Inverter Set

1.1 Product Description
.3..2.
Figure 1.1 Front view
Figure 1.2 Bottom view
EPM x1 Back plate x1
1.2 Packaging
When you receive the EPM please ensure that all the parts listed below are included:
1. Introduction 1. Introduction
If anything is missing, please contact your local Solis distributor.
Solis 5G Series Export Power Manager can monitor and control the backflow power
from the inverter to the grid thus providing export power control of inverters.
The export power manager is suitable for use with all solar PV grid tie inverters.
Model: Solis-EPM1-5G(for single phase system)
Solis-EPM3-5G( for three phase system)
Solis-EPM3-5G-PRO(for three phase system).
Expansion screw set x3
Locking screws x2
5 core AC connector x1
Meter x1
(only for EPM3-5G-PRO)
RS485 cable x1
(10m for meter connection)
CT1/Meter
GRID Communication Comm-INVCT2 CT3
NOTE:
CT1 interface for EPM1-5G external CT connection.
CT1、CT2 and CT3 interfaces for EPM3-5G external CT connection.
Meter interface is for external meter connection.
RS485 cable x5
(Inverter RS485 terminal x5 pcs)
User manual x1
Manual

.5..4.
2. Safety Instructions 2. Safety Instructions
2.1 Safety Symbols
Safety symbols used in this manual, which highlight potential safety risks and important
safety information, are listed as follows:
2.2 General Safety Instructions
CAUTION:
Risk of electric shock from energy stored in capacitors.
Do not remove cover until 5 minutes after disconnecting all sources of
supply expect service technician. Warranty may be voided if any
unauthorized removal of cover.
2.3 Notice For Use
CAUTION:
CAUTION, RISK OF ELECTRIC SHOCK symbol indicates important safety
instructions, which if not correctly followed, could result in electric shock.
CAUTION:
CAUTION, HOT SURFACE symbol indicates safety instructions, which if not
correctly followed, could result in burns.
NOTE:
NOTE symbol indicates important safety instructions, which if not correctly
followed, could result in some damage or the destruction of the inverter.
WARNING:
WARNING symbol indicates important safety instructions, which if not
correctly followed, could result in serious injury or death.
WARNING:
Electrical installations must be done in accordance with the local and national
electrical safety standards.
CAUTION:
Risk of electric shock. Do not remove cover. There is no user serviceable
parts inside. Refer servicing to qualified and accredited service technicians.
The Export Power Manager has been constructed according to the applicable safety
and technical guidelines.
Use the Export Device in installations that meet the following specification ONLY:
1. Permanent installation is required
2. The electrical installation must all the applicable regulations and standards.
3. The Export Power Manager must be installed according to the instructions stated in
this manual.
4. The Export Power Manager must be installed according to correct technical
specification.
5. To install the Export Device you should notice the phase of sampling voltage and the
direction of sampling current, then you can connect sampling wires and CT
(current transformer).
WARNING:
It is forbidden to insert or unplug the CT cable with power on.
If accidentally disconnected the CT cable, please turn off the main AC
switch and wait for 5 mins before reconnect the cable.

.6.
Light
1
2
3
POWER
OPERATION
ALARM
3. Overview
3.1 Front Panel Display
3.2 LED Status Indicator Lights
Status
ON
OFF
ON
OFF
OFF
ON
Description
Figure 3.1 Front Panel Display
Table 3.1 Status Indicator Lights
3.3 Keypad
3.4 LCD
There are four keys in the front panel of the Inverter(from left to right):
ESC, UP, DOWN and ENTER keys. The keypad is used for:
Scrolling through the displayed options (the UP and DOWN keys);
Access to modify the adjustable settings (the ESC and ENTER keys).
The two-line Liquid Crystal Display (LCD) is located on the front panel of the EPM,
which shows the following information:
.7.
Export Device power on
Export Device power off
Communication with inverter
No communication with inverter
Alarm
No alarm
Export Power Manager operation status and data;
Service messages for operator;
4.1 Select a Location for the EPM
4. Installation
To select a location for the EPM, the following criteria should be considered:
The temperature of the EPM could up to 75℃.
The EPM is designed to work in extreme temperature range is from -25℃ to 60℃.
The EPM should be kept minimum 300mm clearance from the other device.
The EPM cannot be placed in direct sunlight.
4.2 Mounting the EPM
Please attach mounting plate on to wall horizontally where to install the product.
Then mark A , B and C to fix mounting plate.(see Figure 4.1)
B
A
Drill three φ8 holes and insert expandable shell into the holes which make the bracket
alignment. After that fix the bracket on the wall.(see Figure 4.2)
Figure 4.1 Bracket
Expansion screws
Bracket
Figure 4.2 Fix the bracket on the wall
C

.9..8.
4. Installation4. Installation
Hang the EPM in the bracket by the steps below .(see Figure 4.3)
Figure 4.3 Hang the EPM in the bracket
Fix the two screw at the side of bracket.(see Figure 4.4)
Figure 4.4 Fix the two screw
4.3 Electrical Connections
The EPM is designed for electrical connection without removing the cover.
The meaning of the symbols located at bottom of the EPM is listed in Table 4.1.
Figure 4.5 EPM1-5G, EPM3-5G system diagram
System connection diagram is as follows:
M4 locking screw
Grid
Meter
Comm_INV
AC voltage sampling terminal
Aconnect to Meter RS485 interface
Connect to solis inverters
Table 4.1 The meaning of the symbols located at bottom of the EPM
Communication Monitoring device or Upgrade Stick
M4 locking screw
Figure 4.6 EPM3-5G-PRO low voltage side system connection diagram
PV
PV Solis Inverter
EPM
Data Stick SolisCloud PV Plant Digital
Management System
CT Grid
Loads Internet RS485 Communication Cable
Communication DC AC
PV
PV Solis Inverter
EPM
Data Stick SolisCloud PV Plant Digital
Management System
CT Grid
Loads Internet RS485 Communication Cable
Communication DC AC
Smart Meter
(optional)

.11..10.
4. Installation4. Installation
Figure 4.7 EPM3-5G-PRO middle and high voltage side system connection diagram
PV
PV Solis Inverter
EPM
Data Stick SolisCloud PV Plant Digital
Management System
Grid
Loads Internet RS485 Communication Cable
Communication DC AC
Smart Meter
(optional)
Step-up Transformer SwitchGear
d. Strip the end of cable to 3mm.
Figure 4.11 Strip the cable(Three)
x
x=3mm
N
U
V
W
PE
Cross-section 1.5mm²
a. Measure the distance from EPM to power distribution box. And find proper cable for
grid input. 3 core cable for Solis-EPM1-5G and 5 core cable for Solis-EPM3-5G and
Solis EPM3-5G-PRO.
b. For single phase inverter installation connect L, N, PE to pin L, N, (see figure 4.8).
c. For three phase inverter installation connect U, V, W to pin1, 2,3 and connect N to
pin4, connect PE to (see figure 4.9).
Figure 4.9 Three phase connection
3 connect
to W
connect to N
connect to
2 connect
to V
1 connect
to U
connect to
connect
to N
connect
to L
Figure 4.8 Single phase connection
Figure 4.10 Strip the cable(Single)
x
x=3mm
PE
L
N
Cross-section 1.5mm²~2.5mm²
Figure 4.12 Welding wire to connector(Single)
e. Through the cable to the washer and use a suitable screw driver to fix the wire to the
connector.
Figure 4.13 Welding wire to connector(Three)
U
V
W
N
1
2
3
N
φ9.5mm~φ11.5mm
PE
PE
L L
φ8.0mm~φ9.5mm
N N
f. Assemble the connector.
Figure 4.14 Assemble connector(Single) Figure 4.15 Assemble connector(Three)
4.3.1 Make the Grid input cable

.12. .13.
4. Installation4. Installation
a. Refer to figure 4.16, the RS485 terminals for inverter and EPM are already assembled.
Tips:RS485 cable: preferred 0.5mm², max 1.0mm².
.
Figure 4.16 RS485 terminal
b. Refer to figure 4.16, connect communication cable between inverter with EPM, and
then measure the distance from EPM to inverter. Use proper cable for RS485
connection. (0.5mm²)
c. Follow step1 to assemble 2 connectors to each end of cable.
≈
Inverter 1 Inverter 2 Inverter n
Rs485 IN | OUT Rs485 IN | OUT Rs485 IN | OUT
Rs485term inal
EPM BOX
Figure 4.17 RS485 cable connection
+ to connect RS485 A
- to connect RS485 B
φ25.5
Connection between EPM and meter
EPM3-5G-PRO needs to connect to the RS485 communication of the meter to read and
display the power, voltage, and current data on the grid side.
Pre-made Cable in Meter Package
2-Pin Connector
L1 L2L3NPE
Load
INV L1
INV L2
INV L3
INV N
INV PE
Grid L1
Grid L2
Grid L3
Grid N
Grid PE
UaUb Uc N Ia* Ia Ib* Ib Ic* Ic
21 22 17 1819 20
A B
CT Arrow Grid
Figure 4.18
4.3.3 Meter connection (only for EPM3-5G-PRO)
Wiring and installation of meter
1.Specification of electricity meter
1.1Dimension Drawings
126.5 69.5
31.5
19.5
88.2
45.4
unit:mm
Figure 4.19
CT1 /Me ter
GRI D Com mun ica tio n Com m-I NVCT2 CT3
4.3.2 Make RS485 cable(COMM-INV port)

4. Installation4. Installation
1.3Wiring and Installing
Ua Ub Uc N Ia* Ia Ib* Ib Ic* Ic
A
B
C
N
Figure 4.20 Three phase four lines connect via CT
.14. .15.
1.2Dimension Drawings
Current
Reference voltage
Input current
Input voltage fluctuation
Consumption
Consumption
Accuracy class
Impedance
Accuracy class
3-110V, 3-400V, 3-480V, 3-66/115V, 3-230/400V, 3-277/480V
3-1(6)A
0-120%
<1VA(Single phase rated current)
<10VA(Single phase)
>2MΩ
Error±0.2%
Error±0.2%
3 phase 3 wires, 3 phase 4 wires
Power
Frequency
Energy
Energy pulse output
Switching input
Width of pulse
Pulse constant
Interface and communication
Range of communication address
Baud rate
Working temperature
Relative humidity
Altitude
Installation environment
Pollution degree
Active, reactive, apparent power, error±0.5℅
45~65Hz， Error±0.2%
Active energy(Accuracy class:0.5, 1), reactive energy(Accuracy class 2)
1 active optocoupler output, Resistive load(Voltage is not more than 24V,
current is not more than 5mA)
1 optocoupler input,Maximum allowed voltage: ~ 220V, OVC Ш
80±20ms
400imp/kWh
RS485：Modbus RTU
Modbus RTU:1~ 247;
1200bps~19200bps
-25℃~+55℃
≤95℅(No condensation)
≤ 2000m
Indoor use
Class 3
Voltage
Specification
Figure 4.21 Three phase four lines connect via CT
Ua Ub Uc Ia* Ia Ib* Ib Ic* Ic
Un
A
B
C
To detect the backflow power, the CTs need to be installed at the PCC
(Point of Common Coupling), instead of the load branch circuit.
NOTE:
For three phase system, CT must be installed on U,V and W with correct
sequence, otherwise EPM can not detect the correct data.
“The CT cable outer diameter is 6.5mm-7.5mm, cross-sectional area 1.5mm²”.
a. Switch off the main switch, disconnect the line cables.
b. Insert the cables through the CT, make sure the P1 on CT is towards grid and P2 is
towards the inverter.
c. Reconnect the line cables.
4.3.4 Connect and fix the CT
NOTE:
If the CT is installed in the wrong direction, the EPM can't work normally.
NOTE:
The CT must be grounded on the secondary side.

5. Commission and decommission4. Installation
Please follow the previous system diagrams to connect multiple inverters.
EPM can control max 60 inverters (Different models are allowed).
The system can ONLY has one grid connection point.
Inverters that connected to EPM can be monitored by Ginlong Monitoring device.
(WiFi/Cellular/LAN stick)
NOTE:
When inverter connected to EPM, no other monitoring device is allowed to be
connected to the inverter.
1. Switch off all the AC breakers and DC breakers in the system.
2. Complete AC and DC wirings for inverters by following inverter manuals.
3. Connect AC cables to the Grid terminal on the EPM.
4. Install the CTs to the grid connection side with correct direction as mentioned in EPM
manual.
5. Connect RS485 communication cables between inverters and EPM Comm-INV port.
6. Switch on the DC breakers for Inverters and set the inverters to "OFF" in LCD and
Set "External EPM Set"- "5G EPM" -"Failsafe: ON". Then assign slave addresses
accordingly in inverters.
7. Switch on all the AC breakers for inverters and EPM
8. Set EPM settings including“Inverter Qty Set”, "Backflow Power", "Set CT Ratio" and
"Set Capacity" based on the actual system configuration.
9. Turn on some loads and check the power flow data on EPM. Negative power indicates
taking power from grid and CT direction is correct. Positive power indicates export power
to grid and the CT direction is reversed (Change the CT direction accordingly).
10. If the CT direction is confirmed correct and EPM is not reporting any alarms, set all
inverters to ON in inverter LCD.
11. Commissioning Completed.
5.1 Commissioning
5.2 Decommissioning
In order to aovid the backflow power to grid, please stop the inverter before stop the EPM.
1. Turn off the inverter output AC breaker.
2. Turn off inverter input DC breaker or pull out PV cable to stop inverter.
3. Turn off the grid input breaker of EPM.
4. Disconnect all cable of EPM, disassemble EPM after 5mins.
NOTE:
Solis recommends customers to purchase suitable current transformers from
local suppliers according to the max possible current in different projects.
As long as the secondary current is 5A, no matter what the primary current is,
it will not affect the warranty of the EPM devices and inverters.
Solis can also provide above current transformers as an optional accessory.
Customers can contact Solis sales rep to place the order based on their project
requirements.
Table 4.2 CT Ratio
Specification
CT-30×20-100A
CT-60×40-300A
CT-80×40-600A
CT-80×40-1000A
CT-160×80-2000A
CT-160×80-3000A
AKH-0.66K
a
e
Dimensions(mm)
W x H x D
90 x 114 x 40
114 x 140 x 36
122 x 162 x 40
122 x 162 x 40
184 x 254 x 52
184 x 254 x 52
Hole size(mm)
a x e
22 x 32
42 x 62
42 x 82
42 x 82
82 x 162
82 x 162
CT Ratio
100:5A
300:5A
600:5A
1000:5A
2000:5A
3000:5A
4.3.5 Muti inverter connection
4.3.6 Monitoring
.17..16.

5.2 Stop the Inverter
Figure 6.1 Operation Overview
6.1 Main Menu
There are four submenus in the Main Menu (see Figure 6.1):
1. Information
2. Settings
3. Advanced Info.
4. Advanced Settings
Solis Export Power Manager main menu provides access to operational data and
information. The information is displayed by selecting "Information" from the menu
and then by scrolling up or down.
6.2 Information
6.2.1 Lock screen
Pressing the ESC key returns to the Main Menu. Pressing the ENTER key locks
(Figure 6.2(a)) or unlocks (Figure 6.2 (b)) the screen.
(b)(a)
Figure 6.2 Locks and Unlocks the Screen of LCD
6. Operation6. Operation
Table 6.1 Information list
During normal operation, the display alternately shows the power of grid side and
the operation Status .Screens can also be scrolled manually by pressing the UP
and DOWN keys. Press the ENTER key to access to the Main Menu.
Status:Normal
01-01-2003 00:02
Active_Pwr:-00001W
01-01-2013 00:01
UP/DOWN
AND
AUTO-SCROLL
Information
Settings
Advanced Info
Advanced Settings
UP/DOWN
UP/DOWN
UP/DOWN
There are 4 status:
Normal: The system works normally
RS485 AllFail: EPM has lost communication with ALL inverters
CT-Failsafe: Current Sensor failed
RS485Fail: EPM has lost communication with one or some of the inverters
VacA_Grid:
IacA_Grid:
000.0V
000.0A
Display Description
Vac_Grid: Grid voltage and current.
VacB_Grid:
IacB_Grid:
000.0V
000.0A
VacC_Grid:
IacC_Grid:
000.0V
000.0A
Inverter SN:
Total_PINV: Total output power of inverters.
Export Limited: Inverter output power percentage.
Freqency: Grid frequency.
Active_Pwr: Power of the power grid.
Active_Pwr: Power of the power grid.
Active_TPwr: :Power flows through CTs.
Load_Pwr:
Total_PINV:
0000.0KW
0000.0KW
Export Limited:
Freqency:
000%
00.00Hz
Active_APwr:
Active_BPwr:
+00000W
+00000W
Active_CPwr:
Active_TPwr:
+00000W
+00000W
XXXXXXXXXXXXXXX Series number of the inverter.
Load_Pwr: Load Power.
.19..18.

The following submenus are displayed when the Settings menu is selected:
1. Set Time
2. Set Address
6.3 Settings
6.3.1 Set Time
This function allows time and date setting. When this function is selected, the LCD will
display a screen as shown in Figure 6.3.
NEXT=<ENT> OK=<ESC>
01-01-2016 16:37
Figure 6.3 Set Time
Press the UP/DOWN keys to set time and data. Press the ENTER key to move from one
digit to the next (from left to right). Press the ESC key to save the settings and return to
the previous menu.
6.3.2 Set Address
This function is used to set the address when multi inverters are connected to three monitor.
The address number can be assigned from “01”to “99”(see Figure 6.4).
The default address number is “01”.
YES=<ENT> NO=<ESC>
Set Address: 01
Figure 6.4 Set Address
Press the UP/DOWN keys to set the address. Press the ENTER key to save the settings.
Press the ESC key to cancel the change and return to the previous menu.
6. Operation6. Operation
Select “Advanced Info.” from the Main Menu.
The screen will require the password as below:
YES=<ENT> NO=<ESC>
Password:0010
Figure 6.5 Enter password
After enter the correct password the Main Menu will display a screen and be able to
access to the following information.
6.4.1 Inverter Power
The screen shows the information of Inverter Power for each inverter which connected
to the EPM.
Figure 6.6 Inverter Power
1. Inverter Power 2. CT Connect Status 3. Version
4. Model Inverter 5. Communication Data 6. Energy Info
6.4 Advanced Info - Technicians Only
NOTE:
To access to this area is for fully qualified and accredited technicians only.
Enter menu “Advanced Info.” and “Advanced settings” (need password).
->Inverter1: 00000W
Inverter2: 00000W
6.4.2 CT Connect Status
The position of three-phase CT installation and direction of current detection refer to 4.3,
the CT connect status only works P1 on CT is towards grid and P2 is towards the inverter,
when you switch to"grid off'" mode and when the load is large enough for EPM to detect
an import, then EPM detection will display OK, as shown in figure 6.7. Otherwise, the status
will display "NG" which indicates wrong CT direction.
Figure 6.7 CT Connect Status
->CTA_ connection：OK
CTB_ connection：OK
.21..20.

6. Operation6. Operation
6.4.3 Version
The screen shows the model version and the software version of the Inverter.
Figure 6.8 Version
Software Ver.: 11
6.4.4 Model Inverter
The screen shows the Rated power of inverters that are connected to the EPM.
Figure 6.9 Model Inverter
Model: 50000
6.4.5 Communication Data
The screen shows the internal communication data of the Inverter,
for service technicians only.
Figure 6.10 Communication Data
01-05: 00 00 00 00 00
06-10: 00 00 00 00 00
6.5 Advanced Settings - Technicians Only
NOTE:
To access to this area is for fully qualified and accredited technicians only.
Please follow 6.4 to enter password to access this menu.
Select Advanced Settings from the Main Menu to access the following options:
1. Inverter Qty. Set 2. Backflow Power 3. Set CT Ratio 4. FailSafe ON/OFF
5. Backflow Work Mode 6. PELD ON/OFF 7. Transmit ON/OFF 8. System Updade
9. Reset Password 10. Restore settings 11.Set Capacity
6.5.1 Inverter Qty. Set
This submenu is used for setting inverter number.
Figure 6.12 Inverter Qty. Set
YES=<ENT> NO=<ESC>
Total Inverter Num:09
6.5.2 Backflow Power
This submenu is used for setting allowed power that inverter can generate to grid.
Figure 6.13 Set Backflow Power
YES=<ENT> NO=<ESC>
Set Power: +000000W
Enter the screen ,it shows all the number of inverters which conected to the EPM.
The number(01~99) can be select by pressing the UP/ DOWN keys.
Press the ENTER key to set the inverter number ESC key to return to the previous menu.
Press the UP/DOWN keys to set data.Press the ENTER key to set backflow power
Then press UP/DOWN keys to change the number( the times of 100).
Press the ESC key to save the settings and return to the previous menu.
6.4.6 Energy Info
This shows the energy records on the EPM.
1.Load Total E.2.INV Send Total E.3.Send Grid Total E.4.Get Grid Total E.
Figure 6.11 Energy Info
Load Total E
INV Send Total E
.23..22.

6. Operation6. Operation
6.5.3 Set CT Ratio
This is used to set the CT ratio for the current transformer.
Setting range is from 20:1 to 9900:1 with 10:1 interval.
For example, if 1000:5A current transformer is used, please set the ratio as 200:1
Figure 6.14 Set Meter CT
YES=<ENT> NO=<ESC>
Set Para:0030:1
6.5.4 FailSafe ON/OFF
The submenu is used for setting fail Safe ON/OFF.
Fail Safe indicates the communication status between EPM and inverters.
The default setting is "Run". DON'T change it without technicians.
Figure 6.15 FailSafe ON/OFF
YES=<ENT> NO=<ESC>
FailSafe: RUN
When the Fail Safe is set as "Run". If some of inverters lost communication with EPM ,
EPM’s LCD screen will display “ RS485 fail”; if all inverters lost communication with EPM,
then the LCD screen of EPM will display “fail safe”. And The inverter stops output power.
When the Fail Safe is set as "Stop", communication lost between EPM and inverters will not
affect the output of inverters.
6.5.5 Backflow Work Mode
Figure 6.16 Backflow Work Mode
YES=<ENT> NO=<ESC>
Mode:01
This submenu is used for set backflow work mode: 01, 02. “01” is the default mode.
Mode “01”, As shown in the figure 6.17, the average limiting mode, the output power of each
phase is the average of the three-phase load power, and it is more than the phase of the
lowest power in three phases.
Inverter
Figure 6.17
Figure 6.18
Mode “02”, As shown in the figure 6.18 the per phase limiting mode, the inverter only
generate the power that equals to one of three-phase load power that is the lowest
load power of a certain phase.
Inverter
Press the UP/DOWN keys to set data.Press the ENTER key to set CT Para.
Press the ESC key to save the settings and return to the previous menu.
.25..24.

6. Operation6. Operation
6.5.6 Transmit ON/OFF
Figure 6.19 Transmit ON/OFF
YES=<ENT> NO=<ESC>
Switch:OFF
This is a setting for Solis technician use only.
Please keep the switch as OFF for normal use.
6.5.9 Restore Settings
Figure 6.22 Restore Settings
Are you sure?
YES=<ENT> NO=<ESC>
When Restore Settings is selected, the LCD will display as shown in Figure 6.22.
Press the ENTER key to execute the setting.
Press the ESC key to return to the previous menu.
6.5.10 Set Capacity
Figure 6.23
->Capacity Setting
This item is used to set the sum of the capacities of the connected inverters.
Figure 6.24
YES=<ENT> NO=<ESC>
Set Capa.: 00000000W
6.5.7 System Update
Figure 6.20 System Update
YES=<ENT> NO=<ESC>
Current Ver.: 11
The upgrade of EPM’s system can realize by external wire.
Please consult our technical engineer for more details.
6.5.8 Reset Password
Figure 6.21 Reset Password
YES=<ENT> NO=<ESC>
Password: 0000
Firstly, input the origin password and press Enter button;
Second, input the new password, press Enter button to save it. UP/DOWN button can be
used to move the cursor.
Third, Press ESC button to get to the previous page.
.27..26.

6.6 Inverter Set
EPM has two versions: EPM-2G, EPM-5G. While inverter is working with EPM,
please be reminded to change the inverters settings as below:
6. Operation
Advanced info.
Advanced Settings
->
YES=<ENT> NO=<ESC>
Password:0010
-> External EPM Set 5G EPM / Others EPM
->
ON/OFF
->
Figure 6.25
NOTE:
If you are using EPM-5G, please choose “5G EPM”, and set it “ON”, if you
are using EPM-2G. Please choose “Others EPM”, and set it “ON”, only
one setting needs to be set.
NOTE:
If “5G EPM” is chosen, for inverters produced before Nov 30th 2019
(SN: XXXXXX19B30XXXX)need to update the firmware, please contact with
Solis local service center or [e-mail] for instructions on
firmware update.
The EPM is designed in accordance with the most important international safety and
EMC requirements. Before delivering to the customer, the EPM has been subjected to
several tests to ensure its optimal operation and reliability.
In case of failure, the LCD screen will display alarm message.
The EPM can show Alarm it self or alarm from inverter. There are 3 alarm can be
showed on LCD:
1. Backflow
There are backflow current to grid, customer need to stop inverter. and check the
connections for the RS485 cable between EPM and inverter.
2. INV. fault
There are fault alarm in inverter, need to check inverter status.
3. Fail safe
RS485 AllFail: EPM has lost communication with ALL inverters
CT-Failsafe: Current Sensor failed
RS485Fail: EPM has lost communication with one or some of the inverters
7. Trouble Shooting
.29..28.

8. Specifications
.30.
Model
Communication
Inverter communication
Maximum communication distance
Communication with inverter
Maximum communication inverter numbers
Monitoring
Modbus
1000m
RS485 (Wired)
10 pcs
WiFi/4G/LAN Stick (Optional)
Solis-EPM1-5G
AC Input
Rated voltage
Input voltage range
Maximum input current
Input frequency range
1/N/PE, 230V
100V-300V (L-N)
0.5A
45-65Hz
General data
Ambient temperature
Relative humidity
Ingress protection
Self power consumption
Dimensions(W*H*D)
Weight
AC connection
CT conection
CT specification
Display
Smart meter
Features
Failsafe fuction
Remote upgrated
PF adjustment
Control time
Warranty
-25℃~+60℃
5%~95%
IP65
＜5W
364mm*276mm*114mm
2.1kg (without CT, Meter)
Quick connection terminal
Plug terminal
Optional (Secondary current is 5A)
LCD, 2*20Z
No
2 years
Yes
No
5s
.31.
8. Specifications
Yes
Model
Communication
Inverter communication
Maximum communication distance
Communication with inverter
Maximum communication inverter numbers
Monitoring
Modbus
1000m
RS485 (Wired)
60 pcs
WiFi/4G/LAN Stick (Optional)
Solis-EPM3-5G
AC Input
Rated voltage
Input voltage range
Maximum input current
Input frequency range
1/N/PE, 230V/400V
175V-520V (L-L)
0.5A
45-65Hz
General data
Ambient temperature
Relative humidity
Ingress protection
Self power consumption
Dimensions(W*H*D)
Weight
AC connection
CT conection
CT specification
Display
Smart meter
Features
Failsafe fuction
Remote upgrated
PF adjustment
Control time
Warranty
-25℃~+60℃
5%~95%
IP65
＜5W
364mm*276mm*114mm
2.1kg (without CT, Meter)
Quick connection terminal
Plug terminal
Optional (Secondary current is 5A)
LCD, 2*20Z
No
2 years
Yes
No
5s
Yes

8. Specifications
.32.
Model
Communication
Inverter communication
Maximum communication distance
Communication with inverter
Maximum communication inverter numbers
Monitoring
Modbus
1000m
RS485 (Wired)
60 pcs
WiFi/4G/LAN Stick (Optional)
Solis-EPM3-5G-PRO
AC Input
Rated voltage
Input voltage range
Maximum input current
Input frequency range
1/N/PE, 230V/400V
175V-520V (L-L)
0.5A
45-65Hz
General data
Ambient temperature
Relative humidity
Ingress protection
Self power consumption
Dimensions(W*H*D)
Weight
AC connection
CT conection
CT specification
Display
Smart meter
Features
Failsafe fuction
Remote upgrated
PF adjustment
Control time
Warranty
-25℃~+60℃
5%~95%
IP65
＜5W
364mm*276mm*114mm
2.1kg (without CT, Meter)
Quick connection terminal
Plug terminal
Optional (Secondary current is 5A)
LCD, 2*20Z
Yes
2 years
Yes
Yes
5s
Yes