Yaskawa iQpump Micro - Manual (Page 297)

u Drive Motor Overload Protection
Set parameter E2-01 (motor rated current) to the appropriate value to enable motor overload protection. The internal motor
overload protection is UL listed and in accordance with the NEC and CEC.
n E2-01: Motor Rated Current
Setting Range: Model Dependent
Default Setting: Model Dependent
Parameter E2-01 (motor rated current) protects the motor if parameter L1-01 is not set to 0 (default is 1, standard induction
motor protection enabled).
If Auto-Tuning has been performed successfully, the motor data that was entered in T1-04 is automatically written into
parameter E2-01. If Auto-Tuning has not been performed, manually enter the correct motor rated current in parameter E2-01.
n L1-01: Motor Overload Protection Selection
The drive has an electronic overload protection function (oL1) based on time, output current and output frequency, which
protects the motor from overheating. The electronic thermal overload function is UL-recognized, so it does not require an
external thermal overload relay for single motor operation.
This parameter selects the motor overload curve used according to the type of motor applied.
Table C.7 Overload Protection Settings
Setting Description
0 Disabled
1 Standard Fan-Cooled Motor (Default)
2 Drive Duty Motor with a Speed Range of 1:10
3 Vector Motor with a Speed Range of 1:100
6 Standard Fan-Cooled Motor (50 Hz)
Set L1-01 to 0 to disable the electronic overload protection and wire each motor with its own motor thermal overload when
connecting the drive to more than one motor for simultaneous operation.
Set L1-01 to 1, 2, or 3 to enable the motor overload protection when connecting the drive to a single motor unless there is
another means of preventing motor thermal overload. The electronic thermal overload function will cause an oL1 fault and
shut off the output of the drive and prevent further 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 Minutes
Factory Default: 1.0 Minutes
The L1-02 parameter sets the allowed operation time before the oL1 fault occurs when the drive is running at 60 Hz and 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 C.2 Motor Overload Protection Time
C.1 UL Standards
YASKAWA TOEP YAIQPM 03B YASKAWA AC Drive - iQpump Micro User Manual 297
C
Standards Compliance