240
Monitoring Trip Events, History, & Conditions Section 6-2
E21 Inverter thermal trip When the inverter internal temperature is above
the threshold, the thermal sensor in the inverter
module detects the excessive temperature of
the power devices and trips, turning the inverter
output OFF.
E22 CPU communication error When communication between two CPU fails,
inverter trips and displays the error code.
E25 Main circuit error (*3) The inverter will trip if the power supply estab-
lishment is not recognized because of a mal-
function due to noise or damage to the main
circuit element.
E30 Driver error An internal inverter error has occurred at the
safety protection circuit between the CPU and
main driver unit. Excessive electrical noise may
be the cause. The inverter has turned OFF the
IGBT module output.
E35 Thermistor When a thermistor is connected to terminals [5]
and [L] and the inverter has sensed the temper-
ature is too high, the inverter trips and turns
OFF the output.
E36 Braking error When "01" has been specified for the Brake
Control Enable (b120), the inverter will trip if it
cannot receive the braking confirmation signal
within the Brake Wait Time for Confirmation
(b124) after the output of the brake release sig-
nal. Or when the output current doesn't reach
the brake release current (b126) during the
brake release time (b121)
E37 Safe Stop Safe stop signal is given.
E38 Low-speed
overload protection
If overload occurs during the motor operation at
a very low speed, the inverter will detect the
overload and shut off the inverter output.
E40 Operator connection When the connection between inverter
and operator keypad failed, inverter trips and
displays the error code.
E41 Modbus communication
error
When "trip" is selected (C076=00) as a
behavior in case of communication error,
inverter trips when timeout happens.
E43 EzSQ invalid instruction The program stored in inverter memory has
been destroyed, or the PRG terminal was
turned on without a program downloaded to the
inverter.
E44 EzSQ nesting count error Subroutines, if-statement, or for-next loop are
nested in more than eight layers
E45 EzSQ instruction error Inverter found the command which cannot be
executed.
E50 to
E59
EzSQ user trip (0 to 9) When user -defined trip happens, inverter trips
and displays the error code.
E60 to
E69
Option errors (error in con-
nected option board, the
meanings change upon
the connected option).
These errors are reserved for the option board.
Each option board can show the errors for a dif-
ferent meaning .. To check the specific mean-
ing, please refer to the corresponding option
board user manual and documentation.
E80 Encoder disconnection If the encoder wiring is disconnected, an
encoder connection error is detected, the
encoder fails, or an encoder that does not
support line driver output is used, the inverter
will shut off its output and display the error
code shown on the right.
Erro
Code
Name Cause(s)
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