114
Display
Protection item
Description
DC part
overvoltage
(slave unit 3)
DC part is protected from overvoltage in the slave unit 3.
[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 3)
Heat sink temperature of the L1/R phase IGBT
in the slave unit 3 becomes more than or equal to a specified value.
Unit overheat
(L2/S phase)
(slave unit 3)
Heat sink temperature of the L2/S phase IGBT
in the slave unit 3 becomes more than or equal to a specified value.
Unit overheat
(L3/T phase)
(slave unit 3)
Heat sink temperature of the L3/T phase IGBT
in the slave unit 3 becomes more than or equal to a specified value.
Blown fuse
(slave unit 3)
Fuse of the main circuit DC part in the slave unit 3 is blown.
or
Magnetic contactor (MC) in the slave unit 3 does not turn on.
Failed fan
(slave unit 3)
Cooling fan in the slave unit 3 fails. However, the operation is
not stopped for protection.
Control power supply
abnormality
(slave unit 3)
Voltage of the control power supply in the slave unit 3 has an
abnormality.
Console error displays
Display
Protection item
Description
Communication timeout
error
Communication timeout between the control board <VFC66R-Z> and the
console board <SET66-Z>.