YASKAWA Z1000U Technical Manual page 301

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L3: Stall Prevention
No.
(Addr. Name
Hex)
Stall Prevention
L3-01
Selection during
(048F)
Acceleration
L3-02 Stall Prevention Level
(0490) during Acceleration
L3-03 Stall Prevention Limit
(0491) during Acceleration
Stall Prevention
L3-04
Selection during
(0492)
Deceleration
L3-05 Stall Prevention
(0493) Selection during Run
L3-06 Stall Prevention Level
(0494) during Run
L3-14 Stall Prevention Level
(04C7) during Deceleration
Automatic Reduction
L3-23
Selection for Stall
(04FD)
Prevention during Run
<1> Upper limit and default values are dependent on parameter L8-38, Frequency Reduction Selection.
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L4: Speed Detection
No.
(Addr. Name
Hex)
L4-01 Speed Agreement
(0499) Detection Level
L4-02 Speed Agreement
(049A) Detection Width
L4-03 Speed Agreement
(049B) Detection Level (+/-)
L4-04 Speed Agreement
(049C) Detection Width (+/-)
Frequency Reference
L4-05
Loss Detection
(049D)
Selection
YASKAWA SIEP YAIZ1D 01C Z1000U HVAC MATRIX Drive Bypass Technical Manual
LCD Display
0: Disabled.
1: General purpose. Acceleration is paused as long as the
StallP Accel Sel
current is above the L3-02 setting.
0: Disabled
2: Intelligent. Accelerate in the shortest possible time without
1: General purpose
exceeding the L3-02 level.
2: Intelligent
3: Enabled (Current Limit). The acceleration rate is
3: iLim Mode
automatically adjusted while limiting the output current at the
setting value of the stall prevention level (L3-02).
Used when L3-01 = 1 or 2. 100% is equal to the drive rated
current.
StallP Accel Lvl
Sets Stall Prevention lower limit during acceleration when
StallPAccDecLim operating in the constant power range. Set as a percentage of
drive rated current.
0: Disabled. Deceleration at the active deceleration rate. An ov
fault may occur.
StallP Decel Sel 1: General purpose. Deceleration is paused when the DC bus
0: Disabled voltage exceeds the Stall Prevention level.
1: General Purpose 4: Overexcitation Deceleration. Decelerates while increasing
4: High Flux Brake the motor flux
6: ILim Mode 6: Enable (Current Limit). The deceleration rate is
automatically adjusted while limiting the regeneration current
at the setting value of the stall prevention level (L3-14).
0: Disabled. Drive runs at a set frequency. A heavy load may
StallP Run Sel cause speed loss.
0: Disabled 1: Decel time 1. Uses the deceleration time set to C1-02 while
1: Decel time Stall Prevention is performed.
2: Decel time 2 2: Decel time 2. Uses the deceleration time set to C1-04 while
Stall Prevention is performed.
Enabled when L3-05 is set to 1 or 2. 100% is equal to the drive
rated current.
StallP Run Level
StallP Decel Lvl Used when L3-04 = 1. 100% is equal to the drive rated current.
0: Sets the Stall Prevention level set in L3-04 that is used
CHP Stall P Sel
throughout the entire frequency range.
0: Lv1 set in L3-06
1: Automatic Stall Prevention level reduction in the constant
1: Autom. Reduction
output range. The lower limit value is 40% of L3-06.
LCD Display
Sets the frequency detection level for digital output functions
Spd Agree Level H2-oo = 2, 3, 4, 5.
Sets the hysteresis or allowable margin for speed detection.
Spd Agree Width
Sets the frequency detection level for digital output functions
Spd Agree Lvl+- H2-oo = 13, 14, 15, 16.
Sets the hysteresis or allowable margin for speed detection.
Spd Agree Wdth+-
Ref Loss Sel 0: Stop. Drive stops when the frequency reference is lost.
0: Stop 1: Run. Drive runs at a reduced speed when the frequency
1: Run@L4-06PrevRef reference is lost.
B.9 L: Protection Function
Description
Description
Values Page
Default: 1
–
Range: 0 to 3
<1>
Default:
Min.: 0% 152
<1>
Max.: 150%
Default: 50%
Min.: 0 153
Max.: 100
Default: 1
153
Range: 0, 1, 4, 6
Default: 1
–
Range: 0 to 2
<1>
Default:
Min.: 30% 154
<1>
Max.: 150%
Default: 120%
Min.: 80
–
<1>
Max.: 120
Default: 0
–
Range: 0, 1
Values Page
Default: 0.0 Hz
B
Min.: 0.0 154
Max.: 400.0
Default: 2.0 Hz
Min.: 0.0 154
Max.: 20.0
Default: 0.0 Hz
Min.: -400.0 154
Max.: 400.0
Default: 2.0 kHz
Min.: 0.0 154
Max.: 20.0
Default: 1
154
Range: 0, 1
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