(3) Overload Detection (OL) Level
Overload detection level is set as shown in Fig. 4.4 when motor rated current =
100%. (Whenallowable current applying time at motor locking is at the maximum,
operating time at higher rotating speed is shorter for the same overload.)
NOTE
Overload detection level is determined with hot start conditions of ambient
temperature 55° C. The set value cannot be changed.
I000
I00
OPERATING N = 0r/rain
TIME (S) (AT MOTOR
N= /
3000r/min _
(AT RATED 1
SPEED)
1 \
0.7
100 2O0 3O0
MOTOR RATED CURRENT (°.4)
Fig. 4.4 Overload Characterisitics
-- 50 --
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