12.8 L: PROTECTION
784 SIEPYEUOQ2A01G AC Drive Q2A Technical Manual
◆ L4: SPEED DETECTION
L4 parameters set the output of signals to the MFDO terminals, for example frequency agree and speed detection.
The drive detects motor speed in CLV or CLV/PM control methods.
■ L4-01 SpAgree Det.Level
No.
(Hex.)
Name Description
Default
(Range)
L4-01
(0499)
SpAgree Det.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 = F, 10, 13, 14 [DO Function Select =
SpeedAgree1, USpeedAgree1, FreqDetect 1, FreqDetect 2].
■ L4-02 SpAgree Det.Width
No.
(Hex.)
Name Description
Default
(Range)
L4-02
(049A)
SpAgree Det.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 = F, 10, 13, 14 [DO Function Select =
SpeedAgree1, USpeedAgree1, FreqDetect 1, FreqDetect 2].
■ L4-03 SpAgree Det.Level(+/-)
No.
(Hex.)
Name Description
Default
(Range)
L4-03
(049B)
SpAgree Det.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 = 11, 12, 15, 16 [DO Function Select =
SpeedAgree2, USpeedAgree2, FreqDetect 3, FreqDetect 4].
■ L4-04 SpAgree Det.Width(+/-)
No.
(Hex.)
Name Description
Default
(Range)
L4-04
(049C)
SpAgree Det.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 = 11, 12, 15, 16 [DO Function Select =
SpeedAgree2, USpeedAgree2, FreqDetect 3, FreqDetect 4].
■ L4-05 FrefLoss Det.Selection
No.
(Hex.)
Name Description
Default
(Range)
L4-05
(049D)
FrefLoss Det.Selection
Sets the operation when the drive detects a loss of frequency reference.
1
(1, 2)
Enables the detection of a loss of an analog frequency reference when the frequency reference is input from the
MFAI terminals (AI1, AI2, and AI3). Set H2-01 to H2-03 = 4B [DO Function Select = FreqRef Loss] to enable
this function.
If the frequency reference is less than 10% in 400 ms, the drive detects frequency reference loss.
Figure 12.133 Detection of Frequency Reference Loss
1 : Stop
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