YASKAWA Varispeed-606PC3

2 . DIGITAL OPERATOR (JV0P-114)
(Gont'd)
- 13 9 -
Protective
Error Causes
Action
to
be Taken
Function
Inverter
capacity is too
small .
Voltage drop due to wring
.
Low
Man
A motor of large capacity connected
Check the power
Volt- Circuit
to
the same power system has been
supply voltage .
age Volt-
started .
Check the power
Protec- age
Rapid acceleration
with generator
capacity and
power
tion
Low
power supply system .
Operation sequence
when power
is
off
Defective electromagnetic contactor
Extremely rapid accel/decel
Motor ON/OFF switching at the
inverter output side
Overctxrent
Short-circuit at
the inverter
output
Transistor error may occur
Protection
side
Investigate the
error
cause,
Motor of a capacity greater than the
correct it, then restart .
inverter rating has been started .
High-speed motor or pulse motor has
been started
.
Check that motor insula-
Ground-fault
ton ~s not deteriorated . i
Protection
Ground-fault at the
inverter output
side .
Check that
wring of
load
side
are
not damaged .
If braking torque
is not
Insufficient
deceleration
time
proper, extend the decel
Overvoltage
Negative load (Motor is turned by the
time or connect a braking
resister unit
(option)
Protection
toad .)
Check that the load is
High input voltage compared to motor
not
minus
.
rated voltage
Check the power supply
voltage
.
Repeated overcurrent protection (OC)
Turn OFF the power supply
Repeated overload protection (OL2)
once and turn it ON again
FuseFuse
Blown
power reset
If
the fault occurs again,
Rapid deceleration in excess
replace the inverter
excitation
Do not replace
the
fuse .
(improper V/f characteristic setting)
Cooing Fn
Overheat
Defective cooling fan
.
t Replace he inverterinverter when
(Only for
Intake air
temperature
rise
the inverter cooling fn is
Types of
Clogged
filter
defective .
Forced Cooing)
Intake air temperature
104° F (40V or less