YASKAWA AC Drive-A1000 User Manual

B.11 n: Special Adjustment
The n parameters adjust more advanced performance characteristics such as Hunting Prevention, speed feedback detection,
High Slip Braking, and Online Tuning for motor line-to-line resistance.
u
n1: Hunting Prevention
No.
(Addr.
Hex)
Name Description Values Page
n1-01
(580)
Hunting Prevention
Selection
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG
0: Disabled
1: Enabled
Default: 1
Range: 0, 1
269
n1-02
(581)
Hunting Prevention Gain
Setting
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG
If the motor vibrates while lightly loaded, increase the gain by 0.1 until
vibration ceases. If the motor stalls, decrease the gain by 0.1 until the stalling
ceases.
Default: 1.00
Min.: 0.00
Max.: 2.50
269
n1-03
(582)
Hunting Prevention Time
Constant
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG
Sets the time constant used for Hunting Prevention.
Default:
<1>
Min.: 0 ms
Max.: 500 ms
269
n1-05
(530)
Hunting Prevention Gain
while in Reverse
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG
Sets the gain used for Hunting Prevention. If set to 0, the gain set to n1-02 is
used for operation in reverse.
Default: 0.00
Min.: 0.00
Max.: 2.50
269
<1> Default setting is dependent on parameter o2-04, Drive Model Selection.
u
n2: Speed Feedback Detection Control (AFR) Tuning
No.
(Addr.
Hex)
Name Description Values Page
n2-01
(584)
Speed Feedback Detection
Control (AFR) Gain
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVOLV
Sets the internal speed feedback detection control gain in the automatic
frequency regulator (AFR).
If hunting occurs, increase the set value. If response is low, decrease the set
value.
Default: 1.00
Min.: 0.00
Max.: 10.00
270
n2-02
(585)
Speed Feedback Detection
Control (AFR) Time
Constant 1
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVOLV
Sets the time constant used for speed feedback detection control (AFR).
Default: 50 ms
Min.: 0
Max.: 2000
270
n2-03
(586)
Speed Feedback Detection
Control (AFR) Time
Constant 2
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVOLV
Sets the AFR time constant to be used during Speed Search and during regen.
Default: 750 ms
Min.: 0
Max.: 2000
270
u
n3: High Slip Braking (HSB) and Overexcitation Braking
No.
(Addr.
Hex)
Name Description Values Page
n3-01
(588)
High-Slip Braking
Deceleration Frequency
Width
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG
Sets the output frequency reduction step width for when the drive stops the
motor using HSB. Set as a percentage of the maximum output frequency.
Increase this setting if overvoltage occurs during HSB.
Default: 5%
Min.: 1
Max.: 20
270
n3-02
(589)
High-Slip Braking Current
Limit
V/f
OLV/PM
V/f w PG
AOLV/PM
OLV
CLV/PM
CLVV/f V/f w PG
Sets the current limit during HSB as a percentage of the motor rated current.
Default:
<1>
Min.: 0%
Max.: 200%
270
B.11 n: Special Adjustment
436
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual

YASKAWA AC Drive-A1000 Specifications

General

Brand	YASKAWA
Model	AC Drive-A1000
Category	Controller
Language	English