Fuji Electric FRENIC MEGA G2 Series - Page 857

11.22 Built-in Option Card Types and Ports in Which They Can be Installed
11-129
SELECTING PERIPHERAL EQUIPMENT
Chap 11
Control method
Speed control (vector control with speed sensor, V/f control with speed sensor, dynamic torque vector control with
speed sensor)
The motor speed is detected with a feedback signal from the motor PG (pulse generator). Motor current is divided
up into excitation current and torque current, each of which can be controlled with vector control, enabling high-
accuracy, high-response speed control. Refer to Chapter 5 "FUNCTION CODES" for details on vector control
settings and adjustment.
(The use of a dedicated Fuji motor for vector control (VG motor) is recommended for the motor when performing
vector control.)
Table 11.22-50
Item
Specification
Remarks
Control
specifications *1
Maximum output
frequency
5 to 599 Hz (encoder upper limit pulse: 100
kHz)
When using 1024
P/R
Speed control
range
Under vector control with speed sensor
Minimum speed: base speed (1:1500)
(in the case of 4P motor: 1 to 1500 min
-1
)
Under V/f control with speed sensor, dynamic
torque vector control with speed sensor
Minimum speed: base speed (1:100)
(in the case of 4P motor: 1 to 1500 min
-1
)
Speed control
accuracy
Analog setting: ±0.2% of maximum frequency
or below (at 25 ±10 °C)
Digital setting: ±0.01% of maximum output
frequency or below (at -10 to +50 ºC)
*1 The control performance changes significantly depending on the pulse count. A pulse count of 1024 P/R or
higher is recommended.