Especially check the wiring to the inverter input terminals L1/R, L2/S and L3/T and output terminals
U, V, and W. Also check that the grounding wires are connected to the grounding terminals ( G)
correctly. (See Fig 4.1)
(2) Check the control circuit terminals and main
circuit terminals for short circuits or ground faults.
(3) Check for loose terminals, connectors and
screws.
(4) Check that the motor is separated from mechani-
cal equipment.
(5) Make sure that all switches of devices connected
to the inverter are turned OFF. Power-ON the
inverter with any of those switches being ON may
cause an unexpected motor operation.
4.1.2 Selection for a desired Motor drived Control
In S3800C, it can select the following motor drive control
Never connect power supply wires to the inverter output terminals U, V, and W. Doing so and
turning the power ON breaks the inverter.
Make sure to conetct the grounding wires of the inverter and motor to the ground electrodes.
Otherwise, it may cause electric shock.
Danger
Control Method
Basic
Control
Speed
Feedback
Control
Method
Speed Control
Other
Restriction
Common V/f Control with
slip compensation inactive
Common dynamic torque
vector control
V/f Control with Slip
Compensation active
Dynamic torque vector
control with speed sensor
Vector control without
speed sensor
Vector control with speed
sensor
V/f control with speed sensor
0
3
4
5
6
2
1
V/f
Disable
Enable
Enable
PG
Estimated
speed
with-
out PG
PG V/f
Frequency
Control
Frequency Contro
with automatic speed
regulator (ASR)
Max. output
frequency:
200Hz
Max. output
frequency: 120Hz
Max. output
frequency: 200Hz
Speed control with
automatic speed
regulator (ASR)
Frequency
Control
with Slip
Compensation
Ｌ１／Ｒ Ｌ２／Ｓ Ｌ３／Ｔ
Ｕ
Ｖ
Ｗ
Ｇ
Ｇ
Fig 4.1 Connection Diagram of Main
Circuit Terminals
Inverter
Motor
Power
(1) Check that the wiring is correct.
00
．
42*
Data
V/f
Control
Vector
Control
―
―
―
４６
4.1.1 Confirmation before power-ON
4.1 Test Run
Before power- ON, check the following items.
4.RUNNING
