YASKAWA Varispeed-616G3

FAULT DISPLAY
FAULT DISPLAY
As Table 6 shows, the faults that the VS-616G3 detects are classified into
troubles and alarms . If a problem occurs, the fault contact is output and
the motor coasts to a stop . Where an alarm is issued, the digital opera-
tor indicates the alarm for warning .
Table 6

Fault Display and Details
Indication Fault Display Description Corrective Action
1 4
:
Undervolatge (PUV)
Low main power circuit voltage
d u ring operation .
"
Check wiring .
Low control circuit voltage during
(at power supply side)
u've~
Undervoltage (CUV)
ope r a tion .
"
Correct power supply
ut .r3 Undervoltage (MC-ANS fault)
_
Main circuit magnetic contactor
voltage .
does n o t operate correctly .
" Check that motor insulation has
r
F Grounding
Grounding current > Approx .
not
deteriorated .
"
50% of inverter rated current
"
Check that there is no damage to
w iring at load side .
" Check the motor winding resistance
oL_
Overcurrent
Inv . output current > 200% of
and ground .
Inv . rated current
" Increase accel time .
Detection level :
Approx . 400V for 200V
class
Approx
. 800V for 400V class
oLJ
Overvoltage Increase decel time and/or
add
[(Cn-O1) -_
400VJ
braking resistor .
Approx . 700V
for 400V class
[(Cn-0 1) <
400V)
Check short-circuit at load, ground
Fuse blown
-
fault
etc .
o}{
Radiation fin overheated Fin temperature 90°C (194°F)
Check fan or ambient temperature
(less than 45°C, 113°F) .
Overload 'Protect the motor .
Measure motor temperature-rise
and reduce load, then reset
V/f .
oL 2 Overload
Protect the inverter .
Reduce load, and increase accel
time, then reset V/f .
When selecting inv . output OFF
o` 3 Overtorque
at "inv . output current > over- -
torque cetection level and
over-
torque c etecfon .
rr Regenerat ive t ran s ist or fault -
Replace
transistor
.
Protect oraking resistor incor-
Reduce regenerative load,
or
use
r -H Braking resistor overheated other resistor unit separately
porated in inverter unit .
installed .
FRin
Coolig fan
fault
Cooling fan stops
during
operation
Repl
ace co o ling fan .
FF 3
Control circuit terminal fault Check state of input terminal
EFS
Control circuit terminalfault
_
with data Un-07
u
n - u
b
---
Control circuit terminal © fault Stop mode selection possible
Replace inverter if " :
'Is
Indicated the state of
F
F I
_
-----------
Control circuit terminalfault
as
open terminal .
F
F
S
Control circuit terminal ® fault
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