Specifications
YASKAWA Inverter Drive A1000 – Crane Software Application Manual 
21 
Access Level <1> 
No.  Parameter Name 
Setting 
Range 
Units  Default  Description 
During 
Run 
V/f 
V/f 
with PG 
OLV  CLV 
MEMOBUS 
Address 
n1-01 
Hunting Prevention Function 
Selection 
0,1  1 
0: Disabled 
1: Enabled 
 A A - - 580H 
n1-02  Hunting Prevention Gain 
0.00 to 
2.50 
 1.00 
Hunting Prevention gain. Used to reduce 
motor vibration when lightly loaded. 
 A A - - 581H 
n1-03 
Hunting Prevention Time 
Constant 
0 to 500  1 ms  10  Time constant for Hunting Prevention function    A  A  -  -  582H 
Hunting Prevention 
n1-05 
Hunting Prevention Gain While in 
Reverse 
0.00 to 
2.50 
 0.00 
Hunting Prevention gain when in reverse 
operation. If set to 0, gain set in n1-02 will be 
used. 
 A A - - 582H 
n2-01 
Speed Feedback Detection 
Suppression (AFR ) Gain   
0.00 to 
10.00 
  1.00  Internal speed feedback detection control gain    -  -  A  -  584H 
n2-02 
Speed Feedback Detection 
Suppression (AFR ) Time 
Constant 
0 to 
2000 
1 ms  50 
Time constant used for speed feedback 
detection (AFR) control 
 - - A - 585H 
AFR Tuning 
n2-03 
Speed Feedback Detection 
Suppression (AFR ) Time 
Constant 2 
0 to 
2000 
1 ms  750 
Time constant used for speed feedback 
detection (AFR) control during regen 
 - - A - 586H 
n3-13  Overexcitation Deceleration Gain   
1.00 to 
1.40 
 1.10 
Gain applied to V/f pattern during 
Overexcitation 
 A A A A 531H 
n3-14 
High Frequency Injection during 
Overexcitation Deceleration 
0,1  0 
0: Disabled 
1: Enabled 
 A A A - 532H 
n3-21 
High-Slip Suppression Current 
Level 
0 to 150  1%  100 
Output current at which the drive reduces 
overexcitation gain to prevent excess motor 
slip 
 A A A A 579H 
Overexcitation Braking 
n3-23 
Overexcitation Operation 
Selection 
0 to 2    0 
0: Enabled in both directions 
1: Enabled only when rotating forward 
2: Enabled only when in reverse 
 A A A A 57BH 
n5-01  Feed Forward Control Selection  0,1    0 
0: Disabled 
1: Enabled 
 - - - A 5B0H 
n5-02  Motor Accel Time 
0.001 to 
10.000 
0.001 
s 
0.178 
<6> 
Time required to accelerate motor at rated 
torque from standstill to rated speed. 
 - - - A 5B1H 
F
ee
d F
orwar
d 
Control
n5-03 
Feed Forward Control 
Proportional Gain 
0.00 to 
100.00 
  1.00  Ratio between motor and load inertia    -  -  -  A  5B2H 
n6-01  Online Tuning Selection    0 to 2    0 
0: Disabled 
1: Line-to-line resistance tuning 
2: Voltage correction 
 - - A - 570H 
Online Tuning 
n6-05  Online Tuning Gain   
0.1 to 
5.0 
 1.0 
Online Tuning gain. Decrease for motors with 
a large rotor time constant. 
 - - A - 5C7H 
o1-01 
Drive Mode Unit Monitor 
Selection 
104 to 
809 
 106 
Content of the last monitor that is shown 
when scrolling through Drive Mode display 
● A A A A 500H 
o1-02 
User Monitor Selection after 
Power Up 
1 to 4    1 
1: Frequency reference (U1-01) 
2: Direction 
3: Output frequency (U1-02) 
4: Output current (U1-03) 
5: User-selected monitor (set by o1-01) 
● A A A A 501H 
o1-03 
Digital Operator Display Units 
Selection 
0 to 3    0 
0: 0.01 Hz 
1: 0.01 % 
2: r/min (using # of motor poles) 
3: User-selected units (set with o1-10 and 
o1-11) 
 A A A A 502H 
o1-04  V/f Pattern Display Unit  0,1    0 
0: Hz 
1: r/min 
 - - - A 503H 
o1-10 
User-Set Display Units Maximum 
Value 
1 to   
60000 
 5000 
Display value that is equal to max output 
frequency 
 A A A A 520H 
Operator Display Settings 
o1-11 
User-Set Display Units Decimal 
Display 
0 to 3    2  Position of the decimal point for o1-10    A  A  A  A  521H 
o2-02  STOP Key Function Selection    0,1    1 
0: Disabled in REMOTE operation 
1: Always Enabled 
 A A A A 506H 
o2-03  User Parameter Default Value    0 to 2    0 
0: No change 
1: Set defaults. Saves parameter settings as 
default values for a User Initialization 
2: Clear all 
 A A A A 507H 
o2-04  Drive Model Selection  0 to FF    <6> 
Enter Drive Model when replacing control 
board 
 A A A A 508H 
o2-05 
Frequency Reference Setting 
Method Selection 
0,1  0 
0: ENTER key must be pressed to enter a 
frequency reference. 
1: ENTER key is not required 
 A A A A 509H 
o2-06 
Operation Selection when Digital 
Operator is Disconnected 
0,1  0 
0: No fault when digital operator is 
disconnected 
1: oPr fault is triggered when disconnected 
 A A A A 50AH 
Digital Operator Keypad Functions 
o2-07 
Motor Direction at Power Up 
when Using Operator 
0,1  0 
0: Forward 
1: Reverse 
 A A A A 527H 
<1>  Access Levels  A: Advanced Programming Menu  Q: Quick Setting Menu  -: N/A in this Control Mode 
<6>  Default Setting and/or Setting Range is determined by drive capacity rating 










