8.8 Details of Protective Functions
8-41
Chap. 8 SPECIFICATIONS
Name Description
LED
monitor
displays
Alarm
output
[30A/B/C]
Related
function
code
Memory error The inverter checks memory data after power-on and
when the data is written. If a memory error is
detected, the inverter stops.
er1
Yes ---
Remote keypad
(option)
communications
error
The inverter stops by detecting a communication
error between the inverter and the remote keypad
(option) during operation from the remote keypad.
er2
Yes
F02
CPU error If the inverter detects a CPU error caused by noise or
some other factor, the inverter stops.
er3
Yes ---
STOP key
priority
Pressing the key on the keypad
forces the inverter to decelerate and
stop the motor even if the inverter is
running by any run commands given
via the terminals or communications
(link operation). After the motor
stops, the inverter issues alarm
"
er6
."
Operation error
Start check
function
Prohibits any run operations and
displays "
er6
" on the LED monitor
if a run command is present at the time
of any of the following status changes.
- Powering up
- An alarm (the
key turned ON) is
released or an alarm reset (RST) is
input.
- Link command (LE) has switched
inverter operation and the run
command in the source to be
switched is active.
er6
Yes H96
Tuning error Stops the inverter output when a tuning failure,
interruption, or abnormal tuning result is detected
during tuning of motor parameters.
er7
Yes ---
RS-485
communications
error
Upon detection of an RS-485 communications error,
the inverter stops its output.
er8
Yes ---
Data save error
during
undervoltage
If the data could not be saved during activation of the
undervoltage 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.
--- --- ---
"---": Not applicable.
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