f-
r--
Function
Description
Remarks
is activated and stops (and holds stopped)
inverter output.
Brake transistor If trouble occurs with brake transistor,
fault detection
this function detects it and shuts off
(BE)
inverter output.
Examine thermal
capacity of brake
resistor and regene-
rative braking duty
(%ED) and use
inverter having a
larger capacity, if
necessary.
Overload shutoff Electronic thermal relay in the inverter
Examine the cause
(Electronic
detects overload of motor during operation of overload, and
thermal relay) under rated conditions, or motor over-
lighten load, change
(THT)
heating at low speed, and activates this
operation pattern,
(THM)
protective function which stops (holds
or use inverter
stopped) inverter output.
having a larger
capacity if necessary
CkUTION
External overload protection must be
provided to protect the motor in
accordance with UL508 Par.144.3.
Heatsink overheat Models larger than 2.2K are equipped
protection with cooling far&) .
(FIN)
If the fan fails and the semiconductor
heatsinks overheat, temperature sensor is
activated to shut off (hold shut off)
inverter output.
Examine cooling fan
operation and ambient
temperature.
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