Electrical Connection
Electrical Connection
Free mode
Master mode
Slave mode
Ø Work Modes in parallel system
Inverter
slave
Inverter
Master
Meter
CAN CAN
Meter
Ø Wiring Operation and LCD Setting
CAT7 CAT5
485
Ø CAN PIN Definition
SYN1
485A
SYN2CANL GNDCANHVCC
1 2 3 4 5 6 7 8
1
485B
Master
Slave
CAN
CAN
Meter
EPS Setting
Adavance
Parallel Setting
Main Breaker Limit
＞Setting
Parallel Setting
Master
CAT7
CAT5
58
59
CT
Slave
Master
L N
L N
CAN
Grid
PV+ PV- PV+ PV-
+ -
Battery
+ -
Battery
L
N
PE
CT
L N
L N
EPS EPS
GridGrid
Inverter Inverter
single-phase
Normal Load
NL
CAN
single-phase
Critical Load
N
L
PE
System diagram applied to temperature sensor CT:
Step 3: Disable "settings - Advanced settings-External ATS" on both
master inverter and slave inverter.
There are three work modes in parallel system, and your acknowledge
of different inverter’s work modes will help you understand parallel system
better, therefore please read it carefully before operating.
Only when none of the inverters is set to "Master", both
inverters are in free mode in the system.
When one inverter is set as “Master”, this inverter enters
master mode.
Master mode can be changed to free mode.
Once one inverter is set as “Master”, another inverter will
enter slave mode automatically. Slave mode cannot be
changed from other modes by LCD setting.
Note: Before operation, please make sure that the inverter
meets the following three conditions:
1. The software version of all inverters is the same;
2. The power range of all inverter models is the same;
3. The type and quantity of batteries connected to all
inverters are the same;
Otherwise, this function cannot be used.
Step1: Connect all inverters’ communication together by connecting
CAT7 network cables between CAN ports.
- Insert one side of CAT7 cable into the first inverter’s CAN port and the
other side into the next inverter’s CAN port.
- Insert one side of CAT5 cable Meter, and the other side into the Meter
port the master inverter.
Step 2: Turn on the power of the entire system, find the inverter
connected to the meter, enter the setting page of the inverter LCD
screen, click on the parallel settings, and select "master control".
8
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