Omron 3G3RX - Page 363

6-10
6-1 Inspection and Maintenance
6
Inspection and Maintenance
Note 1: For output voltage, use
a measurement device
that displays effective
values of fundamental
wave. For current and
electric power, use a
measurement device
that displays all
effective values.
Note 2: The Inverter output
waveform, under PWM
control, has a margin of
error, especially at a
low frequency.
Note 3: General-purpose
testers are not
applicable because of
noise in many cases.
Measurement Method of Output Voltage
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
Inverter
Motor
2 W 220 kW
V
DC
Moving coil type
300 V (200-V class)
600 V (400-V class)
Diode
600 V 0.1 A min. (200-V class)
1000 V 0.1 A min. (400-V class)
Power supply
R
S
T
U
V
W
Effective value of fundamental wave VAC
V
AC = 1.1 × VDC
+
-