L9: Drive Protection 2 - YASKAWA GA700 Technical Manual

11.9 L: Protection Functions
Note:
If this value is too small, it can cause incorrect detection of STPo. If this value is too large, the drive will not detect STPo.
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L8-90: STPo Detection Level (Low Speed)
No.
Name
(Hex.)
L8-90 STPo Detection
Level (Low Speed)
(0175)
Expert
This function detects when PM motors are not synchronized.
The drive cannot detect when motors are not synchronized because the frequency reference is low during start up
and the motor is locked. If fault detection is necessary in these conditions, set the control fault detection level to
enable detection of desynchronization because of motor locking. Increase the setting in 5-unit increments.
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L8-93: Low Speed Pull-out DetectionTime
No.
Name
(Hex.)
L8-93 Low Speed Pull-out
DetectionTime
(073C)
Expert
Set this parameter to 0.0 to disable the function.
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L8-94: Low Speed Pull-out Detect Level
No.
Name
(Hex.)
L8-94 Low Speed Pull-out
Detect Level
(073D)
Expert
■
L8-95: Low Speed Pull-out Amount
No.
Name
(Hex.)
L8-95 Low Speed Pull-out
Amount
(077F)
Expert
◆

L9: Drive Protection 2

L9 parameters are used to configure the protection function used to detect cooling fan faults.
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L9-16: FAn1 Detect Time
No.
Name
(Hex.)
L9-16 FAn1 Detect Time
(11DC)
Expert
986
V/f CL-V/f OLV CLV AOLV
Sets the detection level that the control fault must be equal to or more than
to cause an STPo [Desynchronization Error].
V/f CL-V/f OLV CLV AOLV
Sets the length of time the drive will wait to start baseblock after detecting
LSo [LSo Fault].
V/f CL-V/f OLV CLV AOLV
Sets the detection level for LSo [Low Speed Motor Step-Out] as a
percentage of E1-04 [Maximum Output Frequency].
V/f CL-V/f OLV CLV AOLV
Sets the average count of LSo [Low Speed Motor Step-Out] detections.
V/f CL-V/f OLV CLV AOLV
Sets the detection time for FAn1 [Drive Cooling Fan Failure]. Yaskawa
recommends that you do not change this parameter value.
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Default
(Range)
Determined by A1-02
(0 - 5000 times)
Default
(Range)
1.0 s
(0.0 - 10.0 s)
Default
(Range)
3%
(0 - 10%)
Default
(Range)
10 times
(1 - 50 times)
Default
(Range)
4.0 s
(0.0 - 30.0 s)