Setting Description
4
Permanent Magnet motor with variable
torque control
Selects protection characteristics for a variable torque PM motor. The motor overload detection
level (oL1) is automatically reduced when running below the motor rated speed.
When connecting the drive to more than one motor for simultaneous operation, disable the electronic overload protection
(L1-01 = 0) and wire each motor with its own motor thermal overload relay.
Enable motor overload protection (L1-01 = 1, 2, or 4) when connecting the drive to a single motor, unless another motor
overload preventing device is installed. The drive electronic thermal overload function causes an oL1 fault, which shuts off
the output of the drive and prevents additional overheating of the motor. The motor temperature is continually calculated while
the drive is powered up.
n
L1-02: Motor Overload Protection Time
Setting Range: 0.1 to 5.0 min
Factory Default: 1.0 min
Parameter L1-02 determines how long the motor is allowed to operate before the oL1 fault occurs when the drive is running
a hot motor at 60 Hz and at 150% of the full load amp rating (E2-01) of the motor. Adjusting the value of L1-02 can shift the
set of oL1 curves up the y axis of the diagram below, but will not change the shape of the curves.
Operation time (minutes)
Cold start
(characteristics when an
overload occurs at a
complete stop)
Hot start
(characteristics when an
overload occurs during
continuous operation at 100%)
Motor current (%)
E2-01 = 100% motor current
10
7
3
1
0.4
0.1
0 100 150 200
Figure i.66 Motor Overload Protection Time
u
Precautionary Notes on External Heatsink (IP00/Open-Type Enclosure)
When using an external heatsink, UL compliance requires covering exposed capacitors in the main circuit to prevent injury
to surrounding personnel.
The portion of the external heatsink that projects out can be protected with the enclosure or with the appropriate capacitor
cover after completing drive installation. Use Table i.38 to match drive models with available capacitor covers. Order capacitor
covers from a Yaskawa representative or directly from the Yaskawa sales department.
Table i.38 Capacitor Cover
Model Code Number Model Figure
2A0343
100-061-278 ECAT31698-11
Figure i.67
2A0396
4A0361 100-061-278 ECAT31698-11
4A0414 100-061-279 ECAT31740-11
4A0480
100-061-280 ECAT31746-11
4A0590
i.9 Standards Compliance
YASKAWA ELECTRIC TOEP C710616 54A YASKAWA AC Drive - Z1000 Quick Start Guide
87
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