Notes On Motor Protection; Motor Protection Operation - YASKAWA V1000 Series Installation & Start-Up Manual

L1-01
Motor Type
Setting
Vector motor
3
(1:100)
PM Derated
4
Torque Motor

Notes on Motor Protection

• Motor protection meeting UL and cUL standards is achieved with the motor overload
protection time (L1-02) set to factory default setting. Normally, L1-02 (Motor Overload
Protection Time) does not require setting. If the motor overload tolerance is clear, set the
ovlerload protection time at hot start according to the motor. To detect overload earlier,
decrease the setting.
Note: Figure 4.27 illustrates motor protection operation time characteristics.
Figure 4.27
YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
Overload Tolerance
150
Rated Speed = 100% Sp
60 seconds
100
90
(%)
50 A
Continuous
0 1
100 120 167
A: Typical maximum speed for Yaskawa motor frame number 200LJ and greater
B: Typical maximum speed for Yaskawa motor frame numbers 160MJ – 180LJ
C: Typical maximum speed for Yaskawa motor frame number 132MHJ or less
D: Typical maximum speed for Yaskawa motor frame number 132MJ or less
Operation Time (minutes)
10
7
3
1
0.4
0.1
0 100
Figure 4.27 Motor Protection Operation
4.6 Basic Drive Setup Adjustments
Cooling Fan Capacity
Motor capable of effective
cooling at extremely low
speeds (0.6 Hz).
B
D
200
Pico motors feature a
heatsink running from the
flange to the enclosure. IPM
motors for derated torque
have the most effective
cooling design.
Cold Start
Hot Start
Motor Current (%)
E2-01 = 100%
150 200
Electrothermal
Protection
(100% motor
overload)
Continuous operation
between 0.6 and 60 Hz.
Because this motor is
designed for derated
torque applications, limit
the load at low speeds.
149
4