10.11 L: Protection Functions
572 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L3-37
(11D1)
Expert
Current Limit P
Gain @ Accel
Usually it is not necessary to change this setting.
5 ms
(0 - 100 ms)
964
L3-38
(11D2)
Expert
Current Limit I
Time @ Accel
Suppresses current hunting and overshooting that occurs when the
drive stalls during acceleration. Usually it is not necessary to change
this setting.
10.0
(0.0 - 100.0)
964
L3-39
(11D3)
Current Limit
Filter Time
@Accel
Sets the time constant to adjust the acceleration rate when L3-01 = 3
[Stall Prevention during Accel = Current Limit Method]. Usually it
is not necessary to change this setting.
100.0 ms
(1.0 - 1000.0 ms)
965
L3-40
(11D4)
Current Limit S-
Curve @ Acc/Dec
Sets the function to enable and disable the best S-curve
characteristic used for current-limited acceleration.
0 : Disabled
1 : Enabled
0
(0, 1)
965
◆ L4: Speed Detection
No.
(Hex.)
Name Description
Default
(Range)
Ref.
L4-01
(0499)
Speed Agree
Detection Level
Sets the level to detect speed agree or motor speed.
Sets the level to detect speed agree or motor speed when H2-01 to
H2-03 = 2, 3, 4, 5 [MFDO Function Select = Speed Agree 1, User-
set Speed Agree 1, Frequency Detection 1, Frequency Detection 2].
Determined by A1-
02
(Determined by
A1-02)
965
L4-02
(049A)
Speed Agree
Detection Width
Sets the width to detect speed agree or motor speed.
Sets the width to detect speed agree or motor speed when H2-01 to
H2-03 = 2, 3, 4, 5 [MFDO Function Select = Speed Agree 1, User-
set Speed Agree 1, Frequency Detection 1, Frequency Detection 2].
Determined by A1-
02
(Determined by
A1-02)
965
L4-03
(049B)
Speed Agree
Detection Level
(+/-)
Sets the level to detect speed agree or motor speed.
Sets the level to detect speed agree or motor speed when H2-01 to
H2-03 = 13, 14, 15, 16 [MFDO Function Select = Speed Agree 2,
User-set Speed Agree 2, Frequency Detection 3, Frequency
Detection 4].
Determined by A1-
02
(Determined by
A1-02)
966
L4-04
(049C)
Speed Agree
Detection Width
(+/-)
Sets the width to detect speed agree or motor speed.
Sets the width to detect speed agree or motor speed when H2-01 to
H2-03 = 13, 14, 15, 16 [MFDO Function Select = Speed Agree 2,
User-set Speed Agree 2, Frequency Detection 3, Frequency
Detection 4].
Determined by A1-
02
(Determined by
A1-02)
966
L4-05
(049D)
Fref Loss
Detection Selection
Sets the operation when the drive detects a loss of frequency
reference.
0 : Stop
1 : Run at (L4-06 x Last Reference)
0
(0, 1)
966
L4-06
(04C2)
Frequency
Reference @Loss
of Ref
Sets the frequency reference as a percentage to continue drive
operation after it detects a frequency reference loss. The value is a
percentage of the frequency reference before the drive detected the
loss.
80.0%
(0.0 - 100.0%)
966
L4-07
(0470)
Speed Agree
Detection Selection
Sets the condition that activates speed detection.
0 : No Detection during Baseblock
1 : Detection Always Enabled
0
(0, 1)
967
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