Instruction manual

170
Protective
Operation
Output is
turned OFF
and motor
coasts to a
stop.
OL2 (Inverter overload)
Inverter overload protection
operated by built-in electron-
ic thermal overload relay.
• Check the load size or V/f
pattern setting (constants
n011 to n017).
• Check the Inverter capac-
ity.
• Check the load size, V/f
set value, operation pat-
tern, etc. to confirm that
the load is not excessive
under actual operation.
• Refer to
 Reducing
Motor Noise or Leakage
Current Using Carrier
Frequency Selection
(n080) on page 81.
• Check the wiring
(increase of current
caused by rare shortcir-
cuit, etc.).
OL3 (Overtorque detec-
tion)
V/f mode: Inverter output cur-
rent exceeded the preset val-
ue in constant n098.
Vector mode: Motor output
current or torque exceeded
the preset value in constants
n097 and n098.
When overtorque is detect-
ed, Inverter performs opera-
tion according to the preset
setting of constant n096.
• Check the driven
machine and correct the
cause of the fault, or
increase the value of con-
stant n098 up to the high-
est value allowed for the
machine.
• Check the load size, V/f
set value, operation pat-
tern, etc. to confirm that
the load is not excessive
under actual operation.
• Refer to
 Reducing
Motor Noise or Leakage
Current Using Carrier
Frequency Selection
(n080) on page 81.
• Check the wiring
(increase of current
caused by rare shortcir-
cuit, etc.).
Fault Display Inverter
Status
Description Causes and Corrective
Actions
Digital
Operator
RUN (Green)
ALARM (Red)