4-1
Chapter 4
RUNNING THE MOTOR FOR A TEST
4.1 Checking Prior to Powering ON
Check the following before powering on the inverter.
(1) Check that the wiring is correct.
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 Figure
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 mechanical equipment.
(5) Make sure that all switches of devices connected to the inverter are turned OFF. Powering on the inverter
with any of those switches being ON may cause an unexpected motor operation.
(6) Check that safety measures are taken against runaway of the equipment, e.g., a defense to prevent people
from access to the equipment.
Inverter
L1/R L2/S L3/T
U
V
W
G
G
Power
Motor
supply
Figure 4.1 Connection of Main Circuit Terminals
4.2 Powering ON and Checking
Turn the power ON and check the following points. The following assumes that no function code data is changed
from the factory default.
(1) Check that the charge lamp lights up.
