YASKAWA V1000 Series

5.8 L: Protection Functions
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L1: Motor Protection Functions
The drive has an electronic overload protection function that protects the motor from overheating.
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L1-01: Motor Protection Function Selection
Set the overload protection function in L1-01 according to the motor being used. The cooling ability of an induction motor varies with the motor type, so
the electronic thermal protection characteristics must be consequently adjusted.
No. Name Setting Range Default Page
L1-01 Motor Overload Protection Selection 0 to 4 Determined by A1-02. −
The table below shows the overload characteristics for each type of motor.
L1-01 Setting Motor Type Overload Characteristics Cooling Ability
Eletrothermal Operation (100%
motor OL)
1
General-purpose motor
(standard motor)
100
150
90
60
50
Torque
(%)
60 seconds
continuous
0 5 33 100
(60 Hz)
120 167 200
(%)
Motor Speed
max speed for
200LJ and
above
max speed for
132MHJ and below
max speed for
160MJ thru 180LJ
rated rpm = 100% speed
Motor designed to operate from
line power. Most effective at
cooling the motor when running
at line power specifications
(check the specifications for line
power in your area).
Operating continuously at less then
frequency provided by line power can
trigger motor overload protection (OL1).
A fault is then output and the motor will
coast to stop.
2
Inverter-Drive Dedicated
Motor (constant torque,
1:10)
100
150
55
50
(%)
60 seconds
Continuous
0
1 10
100
(60Hz)
120 167 200
(%)
Motor Speed
Rated rpm = 100% Speed
Torque
max speed for
200LJ and above
max speed for
160MJ thru 180LJ
max speed for
132MJ and below
Motor is designed to effectively
cool itself even at low speeds (as
lower as 6 Hz).
Continuous operation at 6 Hz to 50/60 Hz.
3 Vector Motor (1:100)
100
150
55
50
(%)
60 seconds
Continuous
0
1 10
100
(60Hz)
120 167 200
(%)
Motor Speed
Rated rpm = 100% Speed
Torque
max speed for
200LJ and above
max speed for
160MJ thru 180LJ
max speed for
132MJ and below
Motor is designed to effectively
cool itself at ultra-low speeds
(about 0.6 Hz).
Continuous operation at 0.6 Hz to 50/60
Hz.
4 PM Derated Torque Motor
150
continuous
rating
60 s momentar y
ratin g
Motor Speed (%)
10 33 100
120
100
80
50
0.0
(%)
Torque
Pico motor is designed with a
heatsink running from the flange
to the enclosure. IPM motors for
derated torque have the most
effective cooling design.
Because this motor is designed for derated
torque applications, the load needs to be
limited at low speeds.
5.8 L: Protection Functions
186
YASKAWA ELECTRIC SIEP C710606 18A YASKAWA AC Drive – V1000 Technical Manual (Preliminary)