YASKAWA A1000 Technical Manual

5.2 b: Application
182 YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
 b9-01: Zero Servo Gain
Parameter b9-01 adjusts the responsiveness of the Zero Servo position loop. Increase the value if the response is too slow
and the deviation from the zero position rises too high when load is applied. Decrease the value if vibrations occur during
Zero Servo operation.
Note: Before adjusting the Zero Servo gain, make sure the ASR parameters (C5-) are set up properly and vibration or hunting does
not occur when running with a zero speed reference.
 b9-02: Zero Servo Completion Width
Sets the output range of the Zero Servo completion signal. Enter the amount of deviation allowable from the desired
position to trigger Zero Servo. An output terminal set for Zero Servo (H2- = 33) will be triggered when the motor
reaches the position
Zero Servo position plus or minus b9-02.
No. Name Setting Range Default
b9-01 Zero Servo Gain 0 to 100 5
No. Name Setting Range Default
b9-02 Zero Servo Completion Width 0 to 16383 10

YASKAWA A1000 Specifications

General

Type	AC Drive
Series	A1000
Input Voltage	200-240V, 380-480V
Frequency Range	0-400 Hz
Horsepower Range	0.5 to 1000 HP
Power Range	0.4 to 630 kW
Control Method	V/f Control
Overload Capacity	150% for 60 seconds
Braking	Dynamic Braking
Communication	Modbus
Safety	Safe Torque Off (STO)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheat
Operating Temperature	-10 to +50°C
Storage Temperature	-20 to 60°C
Humidity	5 to 95% RH (non-condensing)
Enclosure	IP20