Omron VARISPEED G7 -, Instruction Manual

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10
-2
Varispeed G7 Control Modes
Details of the Varispeed G7-Series Inverter control modes and their features are provided in this section.
Control Modes and Features
Varispeed G7-Series Inverters support the following five control modes, allowing the selection of a control
mode to suit the required purpose.
Table 10.1 provides an overview of the control modes and their features.
Table 10.1 Overview and Features of Control Modes
Control Mode
V/f Control with-
out PG
V/f Control with
PG
Open-loop Vec-
tor Control 1
Flux Vector Con-
trol
Open-loop Vec-
tor Control 2
Constant Setting A1-02 = 0 A1-02 = 1
A1-02 = 2
(factory setting)
A1-02 = 3 A1-02 = 4
Basic Control
Voltage/frequency
fixed ratio control
Voltage/frequency
fixed ratio control
with speed com-
pensation using a
PG
Current vector
control without a
PG
Current vector
control with a PG
Current vector
control without a
PG using a high-
performance mag-
netic flux and
speed estimator
(software)
Main Applications
Variable speed
control, particu-
larly for control of
multiple motors
with a single
Inverter and for
replacing existing
Inverters
Applications
requiring high-
precision speed
control using a PG
on the machine
side
Variable speed
control, applica-
tions requiring
high performance
without a PG on
the motor side,
and for replacing
open-loop vector
control of the pre-
vious VS-616G5.
Very high-perfor-
mance control
with a PG on the
motor side (sim-
ple servodrives,
high-precision
speed control,
torque control, and
torque limiting)
Very high-perfor-
mance control
without a PG on
the motor side
(such as simple
servodrives,
torque control, and
torque limiting),
and function appli-
cations between
flux vector and
open-loop vector 1
control.
PG Speed Control Card
(Option)
Not required.
Required (PG-A2
or PG-D2).
Not required.
Required (PG-B2
or PG-X2).
Not required.
Basic
Perfor-
mance
Speed Control
Range
*1
1:40 1:40 1:100 1:1000
1:200
*13
Speed Control
Accuracy
*2
± 2 to 3% ± 0.03% ± 0.2% ± 0.02% ± 0.2%
Speed
Response
*3
Approx. 1 Hz Approx. 1 Hz 5 Hz 40 Hz 10 Hz
Maximum
Output Fre-
quency
400 Hz 400 Hz 400 Hz 400 Hz
60 Hz
*13
Starting
Torque
*4
150%/3 Hz 150%/3 Hz 150%/1 Hz
150%/0 min
− 1
150%/0.3 Hz