Sungrow EMS200 User Manual page 44

10 Troubleshooting
Alarm
One or More
High Battery
Level2
Battery Group
DC V-Diff too
Large
38
Possible
causes
Battery
voltage/SOC is
higher than the
"Vbat Uplimit2".
For multiple of
BCPs, or the
system in which
battery DC sides
are directly
connected in
parallel, "Battery
Direct Connect
Voltage Value" is
greater than the
set value.
Measures
2. Check whether
the protection
parameter is set to
an appropriate
value.
1. Stop charging
2. Check whether
the protection
parameter is set to
an appropriate
value.
1. Check whether
the parameter is
set to an
appropriate value.
2. Check whether
the system voltage
difference between
battery racks
whose DC sides
are connected in
parallel is relatively
large.
User Manual
Note
zero-power
operation if there is
no standby state),
but the charging
power is not
affected.
In the off-grid
mode, the local
controller will
control the system
to shut down.
In the on-grid
mode, the local
controller will
control the PCS to
enter the standby
state (or control the
PCS to perform
zero-power
operation if there is
no standby state),
but the charging
power is not
affected.
In the off-grid
mode, the
user-side EMS
needs to stop the
external power
being fed into the
system.
When the alarm
occurs, the local
controller does not
respond to the
instruction sent by
the customer EMS
to close the BMS
contactor.