Fault Name
Display
Possible Cause Solution
Fault Type
Communication
fault
E16.01
Modbus communication
timeout
Check whether the Modbus master sends data within
the set timeout period.
Check whether the RS485 circuit is disconnected or
suffers interference.
Axis fault
A16.02
The protective cover for the
connector is not installed.
Install the protective cover on the connector of the
rightmost drive unit.
Axis fault
E16.03
Station number allocation
fails.
Power on all equipment. If the fault persists, replace
the AC drive.
Axis fault
E16.04
Continuous frame loss
occurs on the extension card.
Ensure that the extension card is connected properly.
Check whether F9-67 is set too low.
Axis fault
E16.11
CANopen communication
timeout
EtherCAT is disconnected. Make sure that the CAN
communication cable is connected properly.
Check parameters Fd-15 to Fd-17 to eliminate
possible interference.
Axis fault
E16.12
The PDO mapping
configured by CANopen is
inconsistent with the actual
communication mapping.
The EtherCAT mapping is inconsistent with the PDO
mapping. Check the PDO mapping parameters in
group AF to make sure that the PDO configuration is
correct.
Axis fault
E16.13
Data exchange from the
power supply unit to the
drive unit times out.
Check whether the power supply unit works properly.
If the power supply unit is faulty, contact the
technical support personnel.
Axis fault
E16.14
Data exchange from the
power supply unit to the
drive unit is abnormal.
The power supply unit is faulty. Contact the technical
support personnel.
Axis fault
E16.21
CANlink heartbeat times out.
Check that the CAN communication cable is correctly
connected.
Check parameters Fd-15 to Fd-17 to eliminate
possible interference.
Axis fault
E16.22
A CANlink station number
conflict occurs.
Change duplicate CAN station numbers in the
network to different ones by using Fd-13.
Axis fault
E16.52
The EEPROM of the EtherCAT
communication card is
faulty.
1 If the programming or upgrading of the
communication card fails, program the
communication card again.
2 If this fault occurs during normal use,
replace the communication card.
Axis fault
E16.53
The slave control chip of the
EtherCAT communication
card is faulty.
1 If the programming or upgrading of the
communication card fails, program the
communication card again.
2 If this fault occurs during normal use,
replace the communication card.
Axis fault
E16.55
The EtherCAT system
parameters are incorrect.
When the master station goes wrong, check whether
it sends the sync frame (FD-78). If not, make sure that
TPDO and RPDO have been configured for the master
PDO. If the master PDO is configured correctly, check
the network port status (Fd-72 to Fd-77) and make
sure that the communication cable is connected
properly.
Axis fault
E16.71
The master station goes
offline during operation of
the communication card.
Check whether the connection between the
communication card and PLC is in poor contact.
Make sure that they are properly connected.
Axis fault
E16.72
The internal slave station
goes offline during operation
of communication card.
Check whether the connection between the
communication card and power supply unit is in
poor contact. Make sure that they are properly
connected.
Axis fault
E16.74
The communication card
configuration is incorrect.
Check whether the configured slave station exists
and ensure that startup with station lost is disabled
(Fd-50 of the power supply unit = 0).
Axis fault
E16.75
The drive unit mapping
configured by using the
communication card is
incorrect.
Check the process data and the number of mapping
relations configured for the drive unit, and make sure
that they match.
Axis fault
E16.76
The power supply unit
mapping configured by using
the communication card is
incorrect.
Check the process data and the number of mapping
relations configured for the power supply unit, and
make sure that they match.
Axis fault
List of Fault Codes
-557-
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