11.9 L: Protection Function
758 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
■ 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 speed agree detection level or motor speed detection level when H2-01 to H2-05 = 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 speed detection width or motor speed detection width when H2-01 to H2-05 = 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 Detect 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 speed agree detection level or motor speed detection level when H2-01 to H2-05 = 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 speed detection width or motor speed detection width when H2-01 to H2-05 = 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)
Enables the detection of a loss of an analog frequency reference when the frequency reference is input from the
MFAI terminals (A1, A2, and A3). Set H2-01 to H2-05 = C [MFDO Function Selection = Frequency Reference
Loss] to enable this function.
Frequency reference loss is detected when the frequency reference drops below 10% within 400 ms.
Figure 11.94 Detection of Frequency Reference Loss
0 : Stop
The drive follows the frequency reference and stops the motor.
1 : Run at (L4-06 x Last Reference)
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