Name
Description
LED
monitor
displays
Alarm
output
[30A,B,C]
Tuning error
*1
Stops the inverter output when a tuning failure, interruption, or
abnormal tuning result is detected during tuning of motor
parameters.
Er7
Yes
RS-485
communication
error
Upon detection of an RS-485 communications error, the inverter
stops its output.
Er8
Yes
Data save error
during under
voltage
If the data could not be saved during activation of the under voltage
protection function, the inverter displays the alarm code.
ErF
Yes
Retry function
When the inverter stops due to a trip, this function automatically
resets the inverter and restarts it.
(The number of retries and the latency between stop and reset can
be specified.)
—
—
Surge protection Protects the inverter against surge voltages which might appear
between one of the power lines for the main circuit and the ground.
—
—
Protection
against
momentary
power failure
Upon detection of a momentary power failure lasting 15 ms or
more, this function stops the inverter output.
If "restart after momentary power failure" is selected, this function
invokes a restart process when power has been restored within a
predetermined period.
—
—
Overload
prevention
control
In the event of overheating of the cooling fan or an overload
condition (alarm display: O H 1
or O L U ), the output frequency
of the inverter is reduced to keep the inverter from tripping.
—
—
Mock alarm
A mock alarm can be generated with keypad operations to check
the failure sequence.
Err
Yes
PID feedback
wire break
detection
Upon detection of a PID feedback wire break, this function outputs
an alarm.
CoF
Yes
*1 Available only for induction motor drive.
8-7
