Code Description
Er2 Keypad communications error
A communications error has occurred between the key and the inverter.
pad
Er3 CPU error A CPU error or LSI error has occurred.
Er4 Option communications error
A communications error has occurred between the connected
option card and the inverter.
Er5 Option error
An error was detected by the connected option card (not by
the inverter).
Er6 Operation protection An incorrect operation was attempted.
Er7 Tuning error
Auto-tuning or Magnetic Pole Position Offset tuning has failed,
resulting in abnormal tuning results.
Er8
RS-485 communications error
(port 1)
A communications error has occurred during RS-485
communication.
ErP
RS-485 communications error
(port 2)
OPL Output phase loss An output phase loss occurred.
ErE Speed mismatching The reference speed and the detection speed are different.
ErF
Data saving error during
undervoltage
When the undervoltage protection was activated, the inverter
failed to save data, showing this error.
ErH Hardware error
The LSI on the power printed circuit board has malfunctioned
due to noise, etc.
Ert CAN open communication error A communications error has occurred during CANopen communication.
ECF EN1, EN2 terminals circuit error An abnormality was diagnosed in EN1, EN2 terminals circuit.
Ot Over torque current Reference torque current became excessive.
DBA Braking transistor broken Detection of an abnormality in the brake transistor
bbE Brake confirmation
The inverter detects mismatch between the brake control signal and
brake detection (feedback) signal.
Eo EN1, EN2 terminals chattering
Detected collision between ENOFF output and EN1/EN2 terminals.
input
ECL Customizable logic error A customizable logic configuration error has caused an alarm.
OH6 Charging resistor overheat
The temperature of the charging resistor inside the has exceeded the
allowable limit. inverter
rbA Rescue by brake alarm No movement detected during rescue operation by bra control.
tCA
Reaching maximum numbers of
trip
counter
The number of trip direction changes has reached the preset level.
SCA Short-circuit control error
The inverter detects mismatch between the short-circuit
control signal and short-circuit detection (feedback) signal.
LCO Load-cell overload
Load-cell function has detected overload situation by means
of preset level.
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