2.4 Protective Functions
2-39
Chapter 2 INSTALLATION AND WIRING
Stops the inverter output upon detecting excess heat sink
temperature in case of cooling fan failure or overload.
Detects a failure of the internal air circulation DC fan and stops the
inverter.
(For models of 45 kW in 200 V class series and 75 kW or above in
400 V class series)
0h1
Yes
Stops the inverter output upon detecting an excessively high
surrounding temperature inside the inverter caused by a failure or an
overload condition of the cooling fan.
0h3
Yes
Overheat
protection
The electronic thermal protection for the braking resistor stops the
inverter output to prevent the braking resistor from overheating. (For
models of 22 kW in 200 V class series and 22 kW or below in 400 V
class series)
* Function codes must be set according to the braking resistor.
dbh
Yes*
Overload
protection
Stops the inverter output upon detection of the abnormal heat sink
temperature and switching element temperature calculated with the
output current.
0lu
Yes
External alarm
input
Places the inverter in alarm-stop state upon receiving digital input
signal THR.
0h2
Yes*
Fuse blown Upon detection of a blown fuse in the inverter’s main circuit, this
function stops the inverter output. (For models of 75 kW in 200 V
class series and 90 kW or above in 400 V class series)
fus
Yes
Abnormal
condition in
charger circuit
Upon detection of an abnormal condition in the charger circuit
inside the inverter, this function stops the inverter output. (For
models of 37 kW in 200 V class series and 75 kW or above in 400 V
class series)
pbf
Yes
Braking
transistor broken
Stops the inverter output if a breakdown of the braking transistor is
detected.
(Only for braking transistor built-in type inverters)
dba
Yes*
Note: In Alarm output [30A/B/C] column, "Yes*" means that an alarm may not be issued depending upon
function code setting.
To Next Page
Loading...
