Yaskawa AC Drive P1000 Bypass Technical Manual - Manual (Page 253)

B.10 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
0: Disabled
1: Enabled
Default: 1
Range: 0, 1
139
n1-02
(581)
Hunting Prevention Gain
Setting
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
139
u n3: High Slip Braking (HSB) and Overexcitation Braking
No.
(Addr.
Hex)
Name Description Values Page
n3-04
(58B)
High-Slip Braking Overload
Time
Sets the time required for an HSB overload fault (oL7) to occur when the drive
output frequency does not change during an HSB stop. This parameter does
not typically require adjustment.
Default: 40 s
Min.: 30
Max.: 1200
139
n3-13
(531)
Overexcitation Deceleration
Gain
Sets the gain applied to the V/f pattern during Overexcitation Deceleration
(L3-04 = 4).
Default: 1.10
Min.: 1.00
Max.: 1.40
140
B.10 n: Special Adjustment
YASKAWA SIEP YAIP1B 01A YASKAWA AC Drive – P1000 Bypass Technical Manual 253
B
Parameter List