Sungrow SC3150UD-MV-US System Manual

105
Fault name
Triggering
condition
Recovery
condition
Corrective measures
Drive Board
Fault
IGBT feedback
node signal is
abnormal (drive
power undervoltage,
module conduction
through, etc.).
IGBT
feedback
node signal
returns to
normal.
Reboot the machine. If the fault
persists, please contact SUNGROW.
Neutral
Point Shift
The Bus voltage
difference between
the positive and
negative ends
exceeds 260 V or
half-Bus voltage
exceeds 800V for
920 us.
The fault is
cleared once
the voltage
returns to
normal for
1s
Reboot the machine. If the fault
persists, please contact SUNGROW.
Carrier
Sync Flt
The carrier
synchronization line
between parallel
units is abnormal,
causing the slave
unit can not run
synchronously with
the master unit for
10 ms, and the
slave unit is in non-
operating status for
10 s. The fault
signal is uploaded
by CPLD.
The fault is
cleared once
the carrier
returns to
normal for
10 s.
1. Try to power down and reboot the
machine;
2. Check the carrier synchronization
line to make sure that there are no
loose connections;
3. If the fault is not caused by the
foregoing reasons and still exists,
please contact SUNGROW.
System Manual 11 Troubleshooting

Sungrow SC3150UD-MV-US Specifications

General

Brand	Sungrow
Model	SC3150UD-MV-US
Category	Storage
Language	English