Description of Fault Codes
‑34‑
Cause
Confirming Method
Solution
1. FPGA failure
The fault persists after the
servo drive is powered off
and on repeatedly.
Replace the servo drive.
2.FPGA and HOST
communication
handshaking error
3.Access timeout occurs
between HOST and the
coprocessor
● E104.2: Current loop operation timeout (FPGA break down)
Cause:
The MCU torque interrupt scheduling time is abnormal. This fault is reported only
during commissioning.
Cause
Confirming Method
Solution
1.FPGA failure
The fault persists after the
servo drive is powered off
and on repeatedly.
Replace the servo drive.
2.FPGA and MCU
communication
handshaking error
● E104.4: MCU command update timeout
Cause:
Take the moment when interrupt starts as the starting time, if the time when
commands are written to MCU is larger than the time when position and speed
regulators are started by FPGA, a warning will be reported.
Cause
Confirming Method
Solution
The system reports that the
encoder communication
time is set improperly or the
command calculation time
is too long.
The fault persists after the
servo drive is powered off
and on repeatedly.
1. Hide unnecessary
functions.
2. Replace the servo drive.
● E120.0: Unknown encoder model
Cause:
The servo drive detects the encoder model during initialization upon power‑on. If
the encoder model does not comply with the requirement, E120.0 occurs.
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