Fuji Electric frenic mini series, User Manual

Page: 155 / 269

8-30
Name Description
LED
monitor
displays
Alarm
output
[30A,B,C]
Related
function
code
Overload
protection
Stops the inverter output if the Insulated Gate
Bipolar Transistors (IGBT) internal temperature
calculated from the output current and cooling fan
temperature detection is over the preset value.
0LU Yes ---
In the following cases, the inverter stops running
the motor to protect the motor in accordance with
the electronic thermal function setting.
Electronic
thermal
overload
relay
• Protects general-purpose motors over the entire
frequency range.
• Protects inverter motors over the entire frequency
range.
* The operation level and thermal time constant
can be set.
0L1 Yes F10
F11, F12
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
Ω =
external resistor is
connected between terminals [13] and [C1].
0H4 Yes H26,
H27
M
ot
or pro
tectio
n
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.
--- --- E34,
E35
Stall prevention Operates when the current limiting is active.
Current limiting: Operates if the current limiting set
in the hardware is exceeded by the inverter's output
current, avoiding tripping of the inverter (during
constant speed operation or during acceleration).
--- --- H12
External alarm
input
Stops the inverter output with an alarm through the
digital input signal (THR).
0H2 Yes E01 to
E03,
E98,
E99
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 E20,
E27,
E01 to
E03,
E98,
E99
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 its output.
E 1 Yes ---
"---": Not applicable.