EN-19
4-3 Turning the power ON
(1) LCD operation panel (U30 V24OP1)
The LCD operation panel startup screen is shown below.
(2) LED operation panel (U30 V24OP2)
Turn the power ON.
All LEDs on the numeric display will turn ON for
a short time, and then "
",
"
" and "
" will appear.
The "LCL" and "Hz" LEDs will also turn ON.
4-4 Selection of control modes
With the VAT300, four control modes and two overload modes can be selected. These are set with the
parameter C30-0 (control mode selection).
* C30-0 is set with a 2-digit value (f1, f0).
(1) Control
modes
There are four VAT300 motor control modes. Refer to the following table, and select the mode
which suits the application.
Control mode
Explanation
C30-0 f0
1) V/f control
The IM is controlled keeping the ratio of voltage and
frequency constant.
1
2) IM speed sensor-less
vector control
The IM is vector-controlled without a speed sensor.
The speed can be controlled.
2
3) IM vector control with
speed sensor
The IM is vector-controlled with a speed sensor.
This mode is used when a fast speed response or
torque response is required.
The speed detection option 1 is required.
(Note 1)
3
4) PM motor control with
sensor
The PM motor is vector-controlled.
The motor can be operated at a higher efficiency than
IM.
A speed detection option which matches the sensor
(encoder) being used is required.
(Note 1)
4
(Note 1)
Refer to Table 7-1-a of ST-3450 for details on the speed detection options.
(2) Device overload mode selection
The following two modes can be selected according to the load being used. If the load and device
capacity do not differ, the device could be overloaded. Refer to the following table, and select the
mode that matches the load being used.
Control mode
Explanation
C30-0 f1
1) Normal-duty setting
Select this when the maximum load rate in respect to the
rated load is low.
The overload standard will be 120% of the device's rated
current for one minute.
1
2) Heavy-duty setting
Select this when the maximum load rate in respect to the
rated load is high.
The overload standard will be 150% of the device's rated
current for one minute.
2
H z
A
％
LC L
FW D
R EV FLT
V24OP1
ROM1
Output frequency
D00-
0
: OFF.Hz
Normal display
Checking the operation after
power ON
FWD REV FLT LCL
FWD REV FLT LCL
FWD REV FLT
LCL
* The value after ROM is the
software version
