3.11 L: Protection Functions
234 YASKAWA TOEPYAIGA8001B GA800 Drive Maintenance & Troubleshooting
No.
(Hex.)
Name Description
Default
(Range)
L8-40
(04F1)
Carrier Freq Reduction Off-
Delay
Sets the length of time until the automatically reduced carrier frequency returns to the condition
before the reduction.
Determined by A1-02
(0.00 - 2.00 s)
L8-41
(04F2)
High Current Alarm
Selection
Sets the function to cause an HCA [Current Alarm] when the output current is more than 150% of the
drive rated current.
0 : Disabled
1 : Enabled
0
(0, 1)
L8-51
(0471)
Expert
STPo I Detection Level
Sets the STPo [Motor Step-Out Detected] detection level as a percentage of the motor rated current.
Note:
Parameter A1-02 [Control Method Selection] selects which parameter is the motor rated current.
• A1-02 = 5 [OLV/PM]: E5-03 [PM Motor Rated Current (FLA)]
• A1-02 = 8 [EZOLV]: E9-06 [Motor Rated Current (FLA)]
0.0%
(0.0 - 300.0%)
L8-52
(0472)
Expert
STPo Integration Level
Sets the detection level for STPo [Motor Step-Out Detected] related to the ACR integral value.
1.0
(0.1 - 2.0)
L8-53
(0473)
Expert
STPo Integration Time
Sets the length of time until the drive detects STPo after it is more than the value of L8-51 [STPo I
Detection Level].
1.0 s
(1.0 - 10.0 s)
L8-54
(0474)
Expert
STPo Id Diff Detection
Sets the Id deviation detection function for STPo [Motor Step-Out Detected].
0 : Disabled
1 : Enabled
1
(0, 1)
L8-55
(045F)
Internal DB
TransistorProtection
Sets the protection function for the internal braking transistor.
0 : Disable
1 : Protection Enabled
1
(0, 1)
L8-56
(047D)
Expert
Stall P @ Accel Activation
Time
Sets the length time that the acceleration stall prevention function can continue to operate before the
drive detects an STPo [Motor Step-Out Detected].
5000 ms
(100 - 5000 ms)
L8-57
(047E)
Expert
Stall Prevention Retry
Counts
Sets the number of times the acceleration stall prevention function can operate until speeds agree
before the drive detects an STPo [Motor Step-Out Detected].
10
(1 - 10 times)
L8-90
(0175)
Expert
STPo Detection Level (Low
Speed)
Sets the detection level that the control fault must be equal to or more than to cause an STPo [Motor
Step-Out Detected].
Determined by A1-02
(0 - 5000 times)
L8-93
(073C)
Expert
Low Speed Pull-out
DetectionTime
Sets the length of time the drive will wait to start baseblock after detecting LSo [Low Speed Motor
Step-Out].
1.0 s
(0.0 - 10.0 s)
L8-94
(073D)
Expert
Low Speed Pull-out Detect
Level
Sets the detection level for LSo [Low Speed Motor Step-Out] as a percentage of E1-04 [Maximum
Output Frequency].
3%
(0 - 10%)
L8-95
(077F)
Expert
Low Speed Pull-out Amount
Sets the average count of LSo [Low Speed Motor Step-Out] detections.
10
(1 - 50 times)
◆ L9: Drive Protection 2
No.
(Hex.)
Name Description
Default
(Range)
L9-16
(11DC)
Expert
FAn1 Detect Time
Sets the detection time for FAn1 [Drive Cooling Fan Fault]. Yaskawa recommends that you do not
change this parameter value.
4.0 s
(0.0 - 30.0 s)
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