Omron SYSDRIVE 3G3EV SERIES, User Manual

Page: 63 / 88

5-6
Data
display
Cause and action Description
%l1
Motor overload (OL1)
The electronic thermal relay actuated
the motor overload protection function.
•
Review the load size, V/f characteris-
tics, acceleration/deceleration time,
and cycle time.
•
Set the rated motor amperage in
constant No. 31 (electronic thermal
reference current).
•
The maximum voltage frequency
(FBAS) was set too low (V/f charac-
teristics setting error) and caused
overcurrent.
•
Set the maximum voltage frequency
to the rated motor frequency.
•
Operated more than one motor with
one Inverter.
•
Set constant No. 31 (electronic ther-
mal reference current) to “0.0 (A).”
%l2
Inverter overload (OL2)
The electronic thermal relay actuated
the Inverter overload protection
function.
•
Review the load size, V/f characteris-
tics, acceleration/deceleration time,
and cycle time.
•
Review the Inverter capacity.
ef1
External fault (EF1)
The Inverter received abnormal input
from external circuits.
•
Review the external circuits.
•
Review the external sequence.
•
Check the signal line of multi-function
contact input for disconnection.
Operation
Chapter 5