2.9 L: Protection Functions
384 YASKAWA TOEPYAIGA5002A GA500 DRIVE PROGRAMMING
Makes the best motor acceleration rate for start up. If you set this parameter to 1, it will make acceleration smoother,
but it can also increase the acceleration time to be longer than the set time. If the drive detects oC [Overcurrent] faults
immediately after acceleration starts, set this parameter.
0 : Disabled
1 : Enabled
Note:
Set L3-01 = 3 [Stall Prevention during Accel = Current Limit Acceleration] to enable this function.
◆ L4: Speed Detection
L4 parameters set the output of signals to the MFDO terminals, for example frequency agree and speed detection.
■ L4-01: Speed Agree Detection Level
No.
(Hex.)
Name Description
Default
(Range)
L4-01
(0499)
Speed Agree Detection
Level
Sets the level to detect speed agree or motor speed.
Determined by A1-02
(Determined by A1-02)
Sets the level to detect speed agree or motor speed when H2-01 to H2-03 = 2, 3, 4, 5 [MFDO Function Selection =
Speed Agree 1, User-set Speed Agree 1, Frequency Detection 1, Frequency Detection 2].
■ L4-02: Speed Agree Detection Width
No.
(Hex.)
Name Description
Default
(Range)
L4-02
(049A)
Speed Agree Detection
Width
Sets the width to detect speed agree or motor speed.
Determined by A1-02
(Determined by A1-02)
Sets the width to detect speed agree or motor speed when H2-01 to H2-03 = 2, 3, 4, 5 [MFDO Function Selection =
Speed Agree 1, User-set Speed Agree 1, Frequency Detection 1, Frequency Detection 2].
■ L4-03: Speed Agree Detection Level(+/-)
No.
(Hex.)
Name Description
Default
(Range)
L4-03
(049B)
Speed Agree Detection
Level(+/-)
Sets the level to detect speed agree or motor speed.
Determined by A1-02
(Determined by A1-02)
Sets the level to detect speed agree or motor speed when H2-01 to H2-03 = 13, 14, 15, 16 [MFDO Function Selection
= Speed Agree 2, User-set Speed Agree 2, Frequency Detection 3, Frequency Detection 4].
■ L4-04: Speed Agree Detection Width(+/-)
No.
(Hex.)
Name Description
Default
(Range)
L4-04
(049C)
Speed Agree Detection
Width(+/-)
Sets the width to detect speed agree or motor speed.
Determined by A1-02
(Determined by A1-02)
Sets the width to detect speed agree or motor speed when H2-01 to H2-03 = 13, 14, 15, 16 [MFDO Function
Selection = Speed Agree 2, User-set Speed Agree 2, Frequency Detection 3, Frequency Detection 4].
■ L4-05: Fref Loss Detection Selection
No.
(Hex.)
Name Description
Default
(Range)
L4-05
(049D)
Fref Loss Detection
Selection
Sets the operation when the drive detects a loss of frequency reference.
0
(0, 1)
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