7 Troubleshooting
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286
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Fault
Code
Name Possible Causes Solution Level
Subcode 12: Power grid
voltage asymmetric
Subcode 13: Power grid
voltage phase lock fault
◆
Check whether the three phases of power
grid voltage are normal.
◆
Check whether input cable connection is
normal.
◆
Contact Inovance. Check whether the circuit
is normal.
Subcode 14: AFE current
asymmetric
Subcode 15: Pulse-by-pulse
current limit fault
Subcode 16: Zero sequence
current fault
Subcode 17: Current zero shift
fault
◆
Check whether the three-phase input is nor-
mal.
◆
Check whether the load is too large.
◆
Check whether the system is short-circuited
to ground.
◆
Contact Inovance. Check whether the circuit
is normal.
Subcode 19: CAN
communication abnormal
Subcode 21: RS485
communication fault in
parallel
Subcode 201/202: CAN
communication abnormal
◆
Check whether the MCB software supports
AFE.
◆
Check whether F6-52 BIT2 in the MCB pa-
rameters is set reasonably.
◆
Check whether the communication cable is
broken or in poor contact.
Subcode 23: Bus connection in
wrong sequence
◆
Check bus connection and exchange the
polarity.
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