L: Protection Functions; L1: Motor Protection - YASKAWA GA500 GA50U Series Programming Manual

1.11

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 TOEPYAIGA5002A GA500 DRIVE PROGRAMMING
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
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.
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
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.
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
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
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
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
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the primary delay time constant for the PTC input signal entered to the drive. This parameter
prevents accidental motor overheat faults.
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
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.
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
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.
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
Sets the function that keeps the current electronic thermal protector value when the drive stops
receiving power.
0 : Disabled
1 : Enabled
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
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].
V/f OLV OLV/PM AOLV/PM EZOLV OLV/PM
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.

1.11 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)
1
Determined by C6-02
(0.0 - 60.0 s)
81