YASKAWA A1000 Technical Manual

5.2 b: Application
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual 179
Parameter Details
5
 b7-01: Droop Control Gain
Sets the amount of speed reduction when the torque reference is 100%. The gain is set as a percentage of the maximum
output frequency. A setting of 0.0% disables the Droop control function.
Figure 5.31
Figure 5.31 Droop Control Gain
 b7-02: Droop Control Delay Time
Adjusts the responsiveness of Droop control. Reduce the setting if the reaction time is too long, and increase it if hunting
occurs.
 b7-03: Droop Control Limit Selection
Enables or disables the droop control limit.
Setting 0: Disabled
Setting 1: Enabled
 b8: Energy Saving
The Energy Saving feature improves overall system operating efficiency by operating the motor at its most efficient
level.
Note: 1. Energy Saving is not designed for applications that experience instantaneous heavy loads or applications that rarely operate with light
load conditions.
2. Ener
gy Saving is mainly designed for applications with variable torque (Normal Duty) but is not appropriate for applications where
the load may suddenly increase.
3. As the performance o
f the Energy Saving function strongly depends on the accuracy of the motor data, always perform Auto-Tuning
and make sure the motor data has been entered correctly before using this function.
 b8-01: Energy Saving Control Selection
Enables or disables the Energy Saving function.
Setting 0: Disabled
Setting 1: Enabled
 b8-02: Energy Saving Gain (OLV, CLV)
Sets the gain level for Energy Saving. A higher value results in lower magnetization of the motor and thereby less energy
consumption. However, if b8-02 is too high, the motor may stall.
No. Parameter Name Setting Range Default
b7-01 Droop Control Gain 0.0 to 100.0% 0.0%
No. Parameter Name Setting Range Default
b7-02 Droop Control Delay Time 0.03 to 2.00 s 0.05 s
No. Parameter Name Setting Range Default
b7-03 Droop Control Limit Selection 0, 1 1
No. Parameter Name Setting Range Default
b8-01 Energy Saving Control Selection 0 or 1 Determined by A1-02
No. Name Setting Range Default
b8-02 Energy Saving Gain 0.0 to 10.0 Determined by A1-02
Speed
Torque
100%
Speed reference
Droop control gain
b7-01
0

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