L4: Speed Detection - YASKAWA AC Drive-A1000 Technical Manual

B.10 L: Protection Function
No.
(Addr. Name
Hex)
Deceleration Time at Stall
L3-22
Prevention during
(4F9)
Acceleration
Automatic Reduction
L3-23
Selection for Stall
(4FD)
Prevention during Run
L3-24 Motor Acceleration Time for
(46E) Inertia Calculations
L3-25
Load Inertia Ratio
(46F)
L3-26 Additional DC Bus
(455) Capacitors
L3-27 Stall Prevention Detection
(456) Time
<1> Upper limit is dependent on parameters C6-01, Drive Duty Selection, and L8-38, Frequency Reduction Selection.
<2> The setting range is 0 to 2 in CLV, OLV/PM, or AOLV/PM, control modes.
<3> Default setting is dependent on parameter E1-01, Input voltage Setting.
<4> Default setting is determined by parameter A1-02, Control Mode Setting.
<5> Parameter value changes automatically if E2-11 is manually changed or changed by Auto-Tuning.
<6> Default setting is dependent on parameters C6-01, Drive Duty Selection, and o2-04, Drive Model Selection.
<7> Default setting is dependent on parameter E5-01, Motor Code Selection.
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L4: Speed Detection

No.
(Addr. Name
Hex)
L4-01 Speed Agreement Detection
(499) Level
L4-02 Speed Agreement Detection
(49A) Width
L4-03 Speed Agreement Detection
(49B) Level (+/-)
L4-04 Speed Agreement Detection
(49C) Width (+/-)
L4-05 Frequency Reference Loss
(49D) Detection Selection
430
V/f V/f V/f w PG V/f w PG OLV OLV
OLV/PM OLV/PM OLV/PM OLV/PM AOLV/PM AOLV/PM CLV/PM CLV/PM
Sets the deceleration time used for Stall Prevention during acceleration in
OLV/PM.
V/f V/f V/f w PG V/f w PG OLV
OLV/PM AOLV/PM CLV/PM
0: Sets the Stall Prevention level set in L3-04 that is used throughout the entire
frequency range.
1: Automatic Stall Prevention level reduction in the constant output range. The
lower limit value is 40% of L3-06.
V/f V/f V/f w PG V/f w PG OLV OLV
OLV/PM AOLV/PM CLV/PM
Sets the time needed to accelerate the uncoupled motor at rated torque from
stop to the maximum frequency.
V/f V/f V/f w PG OLV OLV
OLV/PM OLV/PM AOLV/PM AOLV/PM CLV/PM
Sets the ratio between the motor and machine inertia.
All Modes
When DC bus capacitors have been added externally, be sure to add those
values to the internal capacitor table for proper DC bus calculations.
V/f V/f V/f w PG V/f w PG OLV OLV
OLV/PM OLV/PM AOLV/PM CLV/PM
Sets the time the current must exceed the Stall Prevention level to activate
Stall Prevention.
All Modes
L4-01 sets the frequency detection level for digital output functions H2-oo
= 2, 3, 4, 5.
All Modes
L4-02 sets the hysteresis or allowable margin for speed detection.
All Modes
L4-03 sets the frequency detection level for digital output functions H2-oo
= 2, 3, 4, 5.
All Modes
L4-04 sets the hysteresis or allowable margin for speed detection.
All Modes
0: Stop. Drive stops when the frequency reference is lost.
1: Run. Drive runs at a reduced speed when the frequency reference is lost.
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
Description
CLV CLV
CLV
CLV
CLV
CLV
Description
Values Page
Default: 0.0 s
Min.: 0.0 252
Max.: 6000
Default: 0
253
Range: 0, 1
<5> <6>
Default:
<7>
255
Min: 0.001 s
Max: 10.000 s
Default: 1.0
Min.: 1.0 255
Max.: 1000.0
Default: 0 μF
Min: 0 256
Max: 65000
Default: 50 ms
Min.: 0 256
Max.: 5000
Values Page
Default: 0.0 Hz
Min.: 0.0 256
Max.: 400.0
<1>
Default: 2.0 Hz
256
Min.: 0.0
Max.: 20.0
Default: 0.0 Hz
Min.: -400.0 256
Max.: 400.0
<1>
Default: 2.0 Hz
256
Min.: 0.0
Max.: 20.0
Default: 0
257
Range: 0, 1