113
Display
Protection item
Description
abnormality
(slave unit 2)
Gate power supply
abnormality
(slave unit 2)
Power supply of the gate in the slave unit 2
has an abnormality.
IGBT (L1/R phase)
protection operation
(slave unit 2)
Overcurrent is applied to the L1/R phase IGBT
in the slave unit 2.
IGBT (L2/S phase)
protection operation
(slave unit 2)
Overcurrent is applied to the L2/S phase IGBT
in the slave unit 2.
IGBT (L3/T phase)
protection operation
(slave unit 2)
Overcurrent is applied to the L3/T phase IGBT
in the slave unit 2.
DC part
overvoltage
(slave unit 2)
DC part is protected from
overvoltage in the slave unit 2.
[200 V class] Voltage of the DC part exceeds 400 V.
[400 V class] Voltage of the DC part exceeds 800 V.
Unit overheat
(L1/R phase)
(slave unit 2)
Heat sink temperature of the L1/R phase IGBT
in the slave unit 2 becomes more than or equal to a specified value.
Unit overheat
(L2/S phase)
(slave unit 2)
Heat sink temperature of the L2/S phase IGBT
in the slave unit 2 becomes more than or equal to a specified value.
Unit overheat
(L3/T phase)
(slave unit 2)
Heat sink temperature of the L3/T phase IGBT
in the slave unit 2 becomes more than or equal to a specified value.
Blown fuse
(slave unit 2)
Fuse of the main circuit DC part
in the slave unit 2 is blown.
or
Magnetic contactor (MC) in the slave unit 2 does not turn on.
Failed fan
(slave unit 2)
Cooling fan in the slave unit 2 fails. However, the operation is
not stopped for protection.
Control power supply
abnormality
(slave unit 2)
Voltage of the control power supply
in the slave unit 2 has an abnormality.
Gate board
communication
abnormality
(slave unit 3)
Abnormality occurs in a communication
with the gate board <GAC66> in the slave unit 3.
Gate power supply
abnormality
(slave unit 3)
Power supply of the gate
in the slave unit 3 has an abnormality.
IGBT (L1/R phase)
protection operation
(slave unit 3)
Overcurrent is applied to the L1/R phase IGBT
in the slave unit 3.
IGBT (L2/S phase)
protection operation
(slave unit 3)
Overcurrent is applied to the L2/S phase IGBT
in the slave unit 3.
IGBT (L3/T phase)
protection operation
(slave unit 3)
Overcurrent is applied to the L3/T phase IGBT
in the slave unit 3.