L: Protection Functions; L1: Motor Protection - YASKAWA GA500 Maintenance & Troubleshooting

3.11

L: Protection Functions

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L1: Motor Protection

No.
Name
(Hex.)
L1-01 Motor Overload (oL1)
Protection
(0480)
L1-02 Motor Overload Protection
Time
(0481)
L1-03 Motor Thermistor oH Alarm
Select
(0482)
L1-04 Motor Thermistor oH Fault
Select
(0483)
L1-05 Motor Thermistor Filter
Time
(0484)
L1-08 oL1 Current Level
(1103)
L1-09 oL1 Current Level for Motor
2
(1104)
L1-13 Motor Overload Memory
Selection
(046D)
L1-22 Leakage Current Filter
Time1
(0768)
RUN
L1-23 Leakage Current Filter
Time2
(0769)
RUN
YASKAWA TOEPYAIGA5001A GA500 DRIVE MAINTENANCE & TROUBLESHOOTING
Sets the motor overload protection with electronic thermal protectors.
0 : No
1 : Variable Torque
2 : Constant Torque 10:1 Speed Range
3 : Constant Torque 100:1 SpeedRange
4 : PM Variable Torque
5 : PM Constant Torque
6 : Variable Torque (50Hz)
Note:
When only one motor is connected to a drive, set L1-01 = 1 to 6 [Enabled]. External thermal
relays are not necessary in these conditions.
Sets the operation time for the electronic thermal protector of the drive to prevent damage to the
motor. Usually it is not necessary to change this setting.
Sets drive operation when the PTC input signal entered into the drive is at the oH3 [Motor Overheat
Alarm] detection level.
0 : Ramp to Stop
1 : Coast to Stop
2 : Fast Stop
3 : Alarm Only
Sets the drive operation when the PTC input signal to the drive is at the oH4 [Motor Overheat Fault
(PTC Input)] detection level.
0 : Ramp to Stop
1 : Coast to Stop
2 : Fast Stop
Sets the primary delay time constant for the PTC input signal entered to the drive. This parameter
prevents accidental motor overheat faults.
Sets the reference current for the motor 1 thermal overload detection. When the current level > 0.0 A,
you cannot set this value < 10% of drive rated current.
Sets the reference current for the motor 2 thermal overload detection. When the current level > 0.0 A,
you cannot set this value < 10% of drive rated current.
Sets the function that keeps the current electronic thermal protector value when the drive stops
receiving power.
0 : Disabled
1 : Enabled
Sets the leakage current detection reduction filter time constant during constant speed run.
Note:
You can set this parameter when C6-02 = B [Carrier Frequency Selection = Leakage Current
Detection Reduction Rate PWM].
Sets the leakage current detection reduction filter time constant during acceleration/deceleration.
Note:
• You can set this parameter when C6-02 = B [Carrier Frequency Selection = Leakage Current
Detection Reduction Rate PWM].
• When the setting value increases, the current monitor also starts up slowly. Examine the
relevant sequence for problems.

3.11 L: Protection Functions

Description
Default
(Range)
Determined by A1-02
(0 - 6)
1.0 min
(0.1 - 5.0 min)
3
(0 - 3)
1
(0 - 2)
0.20 s
(0.00 - 10.00 s)
0.0 A
(0.0 A or 10% to 150% of
the drive rated current)
0.0 A
(0.0 A or 10 to150% of the
drive rated current)
1
(0, 1)
Determined by C6-02
(0.0 - 60.0 s)
Determined by C6-02
3
(0.0 - 60.0 s)
145