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Open-loop Motor A5
62
OVLD START LEVEL
(Motor Overload Start Level)
This parameter defines maximum current at
which motor can run continuously. This
parameter is also one of the two parameters that
define the motor overload curve.
The motor overload parameters can be adjusted
by the user. The following two parameters are
used to define the motor overload curve.
•
motor current overload start level (OVLD
START LEVEL(A5)) parameter
•
motor current time out (OVLD TIME
OUT(A5)) parameter
Three overload curves are shown. Curve #1 is
the default motor overload curve. The
parameter settings that define the three overload
curves are shown.
OVLD
START
LEVEL
OVLD
TIME
OUT
curve #1
110%
60 sec
curve #2
110%
40 sec
curve #3
120%
70 sec
Motor Overload Parameters
Motor Overload Curve
110% 130% 150%
170%
190%
210%
230% 250%
10
100
1000
10,000
current (percentage of rated motor current)
default
motor
overload
trip time
(seconds)
curve #1
OLVD START
LEVEL = 110%
curve #1
OLVD TIME
OUT = 60 sec
curve #2
OLVD TIME
OUT = 40 sec
curve #2
OLVD START
LEVEL = 110%
curve #3
OLVD TIME
OUT = 70 sec
curve #3
OLVD START
LEVEL = 120%
Curve #1
Curve #2
Curve #3