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Monitoring Trip Events, History, & Conditions
Troubleshooting
and Maintenance
6–6
NOTE: If an EEPROM error (E08) occurs, be sure to confirm the parameter data values
are still correct. If the power is turned OFF while the [RS] (Reset) intelligent input
terminal is ON, an EEPROM error will occur when power is restored.
E1 2
External trip A signal on an intelligent input terminal configured as
EXT has occurred. The inverter trips and turns OFF
the output to the motor.
E1 3
USP When the Unattended Start Protection (USP) is
enabled, an error occurred when power is applied
while a Run signal is present. The inverter trips and
does not go into Run Mode until the error is cleared.
E1 4
Ground fault The inverter is protected by the detection of ground
faults between the inverter output and the motor
during powerup tests. This feature protects the
inverter, and does not protect humans.
E1 5
Input over-voltage When the input voltage is higher than the specified
value, it is detected 100 seconds after powerup and
the inverter trips and turns OFF its output.
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.
E35
Thermistor When a thermistor is connected to terminals [5] and
[CM1] and the inverter has sensed the temperature is
too high, the inverter trips and turns OFF the output.
---U
Under-voltage (brown-
out) with output shutoff
Due to low input voltage, the inverter turns its output
OFF and tries to restart. If it fails to restart, then the
alarm trips to record the under-voltage error event.
Error
Code
Name Cause(s)