Idiomas disponibles
Idiomas disponibles
10 Attachment
When the motor operates at 150% load continuously for 1 minute after continuous operation at 100% load (hot
start), the default setting triggers the electronic thermal protector.
Figure 10.5
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.
Figure 10.5 Protection Operation Time for a General-purpose Motor at Rated Output Speed
L1-03: Motor Thermistor oH Alarm Select
No.
Name
(Hex.)
L1-03
Motor Thermistor oH
Alarm Select
(0482)
Expert
0 : Ramp to Stop
The drive ramps the motor to stop in the deceleration ramp. Fault relay output terminal MA-MC turns ON, and
MB-MC turns OFF.
1 : Coast to Stop
The output turns off and the motor coasts to stop. Fault relay output terminal MA-MC turns ON, and MB-MC
turns OFF.
2 : Emergency Stop (Use C1-09)
The drive stops the motor in the deceleration ramp set in C1-09 [Emergency Stop Ramp]. Fault relay output
terminal MA-MC turns ON, and MB-MC turns OFF.
3 : Alarm Only
The keypad shows oH3 and the drive continues operation. The output terminal set for Alarm [H2-01 to H2-05 =
10] activates.
L1-04: Motor Thermistor oH Fault Select
No.
Name
(Hex.)
L1-04
Motor Thermistor oH Fault
Select
(0483)
Expert
0 : Ramp to Stop
The drive ramps the motor to stop in the deceleration ramp. Fault relay output terminal MA-MC turns ON, and
MB-MC turns OFF.
1 : Coast to Stop
358
V/f
OLV
CLV
CLV/PM
Sets drive operation when the PTC input signal entered into the drive is at the oH3 [Motor
Overheat Alarm] detection level.
V/f
OLV
CLV
CLV/PM
Sets the drive operation when the PTC input signal to the drive is at the oH4 [Motor Overheat
Fault (PTC Input)] detection level.
YASKAWA TOMPYEULA7002A LA700 Series Installation and Operation Instruction
Description
Description
Default
(Range)
3
(0 - 3)
Default
(Range)
1
(0 - 2)
