B.3 Parameter Table
436 YASKAWA ELECTRIC SIEP C710616 27C YASKAWA AC Drive A1000 Technical Manual
■ L4: Speed Detection
L3-21
(466H)
Accel/Decel Rate Calculation Gain
Sets the proportional gain used to calculate the deceleration rate during KEB Ride-Thru, ov
suppression function, and Stall Prevention during deceleration (L3-04 = 2).
Default: 1.00
Min: 0.10
Max: 10.00
261
L3-22
(4F9H)
Deceleration Time at Stall
Prevention during Acceleration
Sets the deceleration time used for Stall Prevention during acceleration in OLV/PM.
Default: 0.0 s
Min: 0.0 s
Max: 6000 s
257
L3-23
(4FDH)
Automatic Reduction Selection for
Stall Prevention during Run
0: Sets the Stall Prevention level set in L3-06 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.
Default: 0
Min: 0
Max: 1
259
L3-24
(46EH)
Motor Acceleration Time for
Inertia Calculations
Sets the time needed to accelerate the uncoupled motor at rated torque from stop to the
maximum frequency.
Default:
<8> <9> <14>
Min: 0.001 s
Max: 10.000 s
261
L3-25
(46FH)
Load Inertia Ratio
Sets the ratio between the motor and machine inertia.
Default: 1.0
Min: 1.0
Max: 1000.0
261
L3-26
(455H)
Additional DC Bus Capacitors
When DC bus capacitors have been added externally, be sure to add those values to the internal
capacitor table for proper DC bus calculations.
Default: 0 μF
Min: 0 μF
Max: 65000 μF
262
L3-27
(456H)
Stall Prevention Detection Time
Sets the time the current must exceed the Stall Prevention level to activate Stall Prevention.
Default: 50 ms
Min: 0 ms
Max: 5000 ms
262
<8> Parameter value is changed if E2-11 is manually changed or changed by Auto-Tuning.
<9> Default setting is determined by the drive model (o2-04) and duty selection (C6-01).
<10> Default setting is determined by the control mode (A1-02).
<14> Default setting value is dependent on the motor code set to parameter E5-01.
<18> Values shown here are for 200 V class drives. Double the value when using a 400 V class drive.
<33> Default setting value is dependent on the setting for the input voltage (E1-01).
<34> Setting range is dependent on the control mode (A1-02). When using CLV, OLV/PM, or AOLV/PM, the setting range is 0 to 2 s.
<35> The upper limit of the setting range is determined by the values set to the duty selection (C6-01) and the carrier frequency reduction selection
(L8-38).
No. (Addr.) Name Description Setting Page
L4-01
(499H)
<10> Default setting is determined by the control mode (A1-02).
Speed Agreement Detection Level
L4-01 sets the frequency detection level for digital output functions H2- = 2, 3, 4, 5.
L4-02 sets the hysteresis or allowable margin for speed detection.
Default: 0.0 Hz
Min: 0.0 Hz
Max: 400.0 Hz
262
L4-02
(49AH)
Speed Agreement Detection Width
Default:
<10>
Min: 0.0 Hz
Max: 20.0 Hz
262
L4-03
(49BH)
Speed Agreement Detection Level
(+/-)
L4-03 sets the frequency detection level for digital output functions H2- = 13, 14, 15, 16.
L4-04 sets the hysteresis or allowable margin for speed detection.
Default: 0.0 Hz
Min: -400.0 Hz
Max: 400.0 Hz
262
L4-04
(49CH)
Speed Agreement Detection Width
(+/-)
Default:
<10>
Min: 0.0 Hz
Max: 20.0 Hz
262
L4-05
(49DH)
Frequency Reference Loss
Detection Selection
0: Stop. Drive stops when the frequency reference is lost.
1: Run. Drive runs at a reduced speed when the frequency reference is lost.
Default: 0
Min: 0
Max: 1
262
L4-06
(4C2H)
Frequency Reference at Reference
Loss
Sets the percentage of the frequency reference that the drive should run with when the
frequency reference is lost.
Default: 80%
Min: 0.0%
Max: 100.0%
263
L4-07
(470H)
Speed Agreement Detection
Selection
0: No detection during baseblock.
1: Detection always enabled.
Default: 0
Min: 0
Max: 1
263
No. (Addr.) Name Description Setting Page
All Modes
To Next Page
Loading...
Need help?
General
