8-14
Name Description
LED
monitor
displays
Alarm
output
[30A,B,C]
PTC
thermistor
- A PTC thermistor input stops the inverter output for motor
protection.
A PTC thermistor is connected between terminals [C1] and [11],
and a 1-k
:
external resistor is connected between terminals
[13] and [C1].
OH4
Yes
Motor protection
Overload
early
warning
Outputs a preliminary alarm at a preset level before the motor is
stopped by the electronic thermal function for the purpose of
protecting the motor.
— —
Stall prevention Operates when instantaneous overcurrent limiting is active.
- Instantaneous overcurrent limiting:
Operates if the inverter's output current exceeds the
instantaneous overcurrent limit level, avoiding tripping of the
inverter (during constant speed operation or during
acceleration).
— —
External alarm
input
- Stops the inverter output with an alarm through the digital input
signal (THR).
OH2
Yes
Alarm relay
output
(for any fault)
- The inverter outputs a relay contact signal when the inverter
issues an alarm and stops the inverter output.
< Alarm Reset >
The alarm stop state is reset by pressing the
key or by the
digital input signal (RST).
< Saving the alarm history and detailed data >
The information on the previous 4 alarms can be saved and
displayed.
— Yes
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.
E 1 Yes
Remote keypad
communications
error
The inverter stops by detecting a communication error between the
inverter and the remote keypad (option) during operation from the
remote keypad.
E 2
Yes
CPU error
If the inverter detects a CPU error caused by noise or some other
factor, the inverter stops.
E 3
Yes
Operation
Protection
STOP
key
priority
Pressing
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 "E
6."
E 6 Yes
"—": Not applicable.
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