Unit installation

IOMM ACZ/AGZ-3 ACZ / AGZ-BM 73
Monitoring Trip Events, History. & Conditions
Fault Detection and Clearing
The microprocessor in the inverter detects a variety of fault
conditions and captures the event, recording it in a history table.
The inverter output turns OFF, or “trips” similar to the way a
circuit breaker trips due to an over-current condition. Most faults
occur when the motor is running (refer to the diagram to the
right). However, the inverter could have an internal fault and trip
in Stop Mode. In either case, you can clear the fault by pressing
the Stop/Reset key.
Error Codes
An error code will appear on the display automatically when a fault causes the inverter to trip. The following
table lists the cause associated with the error.
Error
Code
Name Cause(s)
E01
Over current event while at constant
speed
E02
Over current event during deceleration
E03
Over current event during acceleration
E04
Over current event during
other conditions
The inverter output was short-circuited, or the motor shaft is locked or has a heavy
load. These conditions cause excessive current for the inverter, so the inverter
output is turned OFF.
The dual-voltage motor is wired incorrectly.
E05
Overload protection
When a motor overload is detected by the electronic thermal function, the inverter
trips and turns OFF its output.
E07
Over voltage protection
When the DC bus voltage exceeds a threshold, due to regenerative energy from
the motor.
E08
EEPROM error
When the built-in EEPROM memory has problems due to noise or excessive
temperature, the inverter trips and turns OFF its output to the motor.
E09
Under-voltage error
A decrease of internal DC bus voltage below a threshold results in a control circuit
fault This condition can also generate excessive motor heat or cause low torque.
The inverter trips and turns OFF its output.
E11
E22
CPU error
A malfunction in the built-in CPU has occurred, so the inverter trips and turns OFF
its output to the motor.
E12
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.
E13
USP
When the Unattended Start Protection (LJSP) 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.
E14
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.
E15
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 (brownout) 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.
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.