YASKAWA CIPR-GA50C Serie Manual De Instrucciones página 361

Load Tolerance
L1-02: Motor Overload Protection Time
No.
Name
(Hex.)
L1-02 Motor Overload
Protection Time
(0481)
Set the overload tolerance time to the length of time that the motor can operate at 150%
load from continuous operation at 100% load.
When the motor operates at 150% load continuously for one minute after continuous
operation at 100% load (hot start), the default setting triggers the electronic thermal
protector.
Figure 10.6 shows an example of the electronic thermal protector operation time. Motor
overload protection operates in the range between a cold start and a hot start.
This example shows a general-purpose motor operating at the base frequency with L1-02
set to 1.0 min.
• Cold start
Shows the motor protection operation time characteristics when the overload occurs
immediately after starting operation from a complete stop.
• Hot start
Shows the motor protection operation time characteristics when overload occurs from
continuous operation below the motor rated current.
YASKAWA TOMPC7106173UA GA500 Installation and Operation Instruction
Cooling Capability
This motor is designed to operate
with commercial line power. Operate
at a 50 Hz base frequency to
maximize the motor cooling ability.
Description
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the operation time for the electronic thermal protector of
the drive to prevent damage to the motor. Usually it is not
necessary to change this setting.
10 Attachment
Overload Characteristics
(at 100% motor load)
If the motor operates at frequencies
less than commercial line power, the
drive will detect oL1. The drive
triggers a fault relay output and the
motor coasts to stop.
Default
(Range)
1.0 min
(0.1 - 5.0 min)
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