11.4 Option
11-75
Chapter 11 SELECTING PERIPHERAL EQUIPMENT
Control mode
Speed control (Vector control with speed sensor, V/f control with speed sensor, and Dynamic torque vector
control with speed sensor)
To control the motor speed, the inverter equipped with this interface card detects feedback signals sent
from the PG (pulse generator) mounted on the motor output shaft, decomposes the motor drive current
into the exciting and torque current components, and controls each of components in vector, enabling
high-accuracy and high-response speed control. For configuration and adjustment of the vector control,
refer to Chapter 5, "FUNCTION CODES."
(A recommended motor for this control is a FUJI VG motor exclusively designed for vector control.)
Table 11.4-42
Item Specifications Remarks
Maximum
output
frequency
25 to 200 Hz
Speed control
range
Under vector control with speed sensor
Minimum speed : Base speed = 1 : 1500
(For 4-pole motors, 1 to 1500 r/min)
Under V/f control with speed sensor or
dynamic torque vector control with speed
sensor
Minimum speed : Base speed = 1 : 100
(For 4-pole motors, 15 to 1500 r/min)
Control
specifications
*1
Speed control
accuracy
Analog setting:
±0.2% or less of maximum output frequency
(at 25°C ±10°C)
Digital setting:
±0.01% or less of maximum output frequency
(at -10 to +50°C)
When a VG motor
(1024 P/R) is
connected.
*1 The controllability values specified here greatly vary depending on the pulse resolution, P/R
(Pulses/Revolution). The recommended P/R is 1024 or more.
For details, refer to the PG2 Interface Card Instruction Manual (SI47-1250-JE).
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