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6-6
6-1 Inspection and Maintenance
6
Inspection and Maintenance
Measurement Methods of I/O Voltage, Current, and Electric Power
Below are general measurement devices for I/O voltage, current, and electric power.
Measure effective values of fundamental wave for voltage, and all effective values for electric power.
Note 1: For 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, may have a margin of error, especially at a low frequency.
Therefore, use the above shown measurement devices and methods to ensure accuracy.
Note 3: General-purpose testers are not applicable for measurement in many cases.
Power
supply
R
S
T
I
R
I
S
I
T
E
R
E
S
E
T
W
11
W
12
R/L1
S/L2
T/L3
U/T1
V/T2
W/T3
I
U
I
V
I
W
E
U-V
E
V-W
E
W-U
W
01
W
02
U
V
W
Motor
General-purpose Inverter
Measurement item
Measurement point
Measurement device
Note
Measurement value reference
Power supply
voltage
E
I
Phase-to-phase voltage
between R-S, S-T, and T-
R
(E
R
) (E
S
) (E
T
)
Moving-iron voltmeter
or
Rectifier voltmeter
Effective value
of fundamental
wave
Commercial current
(200-V class)
200 to 240 V, 50/60 Hz
(400-V class)
380 to 480 V, 50/60 Hz
Power supply
current
I
I
Current R, S, T
(I
R
) (I
S
) (I
T
)
Moving-iron ammeter
All effective
values
Input electric
power
W
I
Between R-S, S-T
(W
11
) + (W
12
)
Electrodynamic
wattmeter
All effective
values
Two-wattmeter method
Input power
factor
Pf
I
Calculated from the measured values of power supply voltage E
I
,
power supply current I
I
, and input electric power W
I
.
Output
voltage
E
O
Between U-V, V-W, W-U
(E
U
) (E
V
) (E
W
)
Rectifier voltmeter
All effective
values
Output
current
I
O
Current U, V, W
(I
U
) (I
V
) (I
W
)
Moving-iron voltmeter
All effective
values
Output power
W
O
Between U-V, V-W
(W
01
) + (W
02
)
Electrodynamic
wattmeter
All effective
values
Two-wattmeter method
Output power
factor
Pf
O
Calculated from the measured values of output voltage E
O
, output
current I
O
, and output electric power W
O
.
3
Pf
I
=
E
I
I
I
W
I
100 (%)
Summary of Contents for SYSDRIVE 3G3MX-A2002
Page 1: ...Cat No I559 E1 01 USER S MANUAL SYSDRIVE MXSERIES Multi function Compact Inverter...
Page 17: ...Chapter 1 Overview 1 1 Functions 1 1 1 2 Appearance and Names of Parts 1 3...
Page 24: ......
Page 25: ...Chapter 2 Design 2 1 Installation 2 1 2 2 Removing and Mounting Each Part 2 5 2 3 Wiring 2 10...
Page 90: ......
Page 91: ...Chapter 4 Functions 4 1 Monitor Mode 4 1 4 2 Function Mode 4 5...
Page 180: ......
Page 181: ...Chapter 5 Maintenance Operations 5 1 Special Display List 5 1 5 2 Troubleshooting 5 5...
Page 188: ......
Page 189: ...Chapter 6 Inspection and Maintenance 6 1 Inspection and Maintenance 6 1 6 2 Storage 6 7...
Page 212: ...7 15 7 5 Options 7 Specifications 3G3AX RBU41 95 75 2 5 208 218 5 145 35 100 5...
Page 230: ......
Page 231: ...Appendix Appendix 1 Parameter List App 1 Appendix 2 Product Life Curve App 17...
Page 249: ...INDEX...
Page 252: ......