Measurement of main circuit voltages, currents and powers
Precautions for maintenance and inspection
7 - 14
Use an FFT to measure the output voltage accurately. A tester or general measuring instrument
cannot measure accurately.
When the carrier frequency exceeds 5 kHz, do not use this instrument since using it may increase
eddy current losses produced in metal parts inside the instrument, leading to burnout. In this case,
use an approximate-effective value type.
When the setting of Pr. 195 "ABC1 terminal function selection" is the positive logic
A digital power meter (designed for inverter) can also be used to measure.
Fault signal
Across A1 and C1
Across B1 and C1
Moving-coil type
(such as tester)
Continuity check
[Normal]
[Fault]
Across A1 and C1 Discontinuity Continuity
Across B1 and C1 Continuity
Discontinuity
Item
Measuring point
Measuring instrument
Remarks (reference measured value)
Tab. 7-5:
Measuring Points and Instruments (2)
Содержание FR-A820-00046 (0.4K)
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Страница 144: ...System configuration for Ethernet communication FR A800 E Installation and wiring 2 114 ...
Страница 202: ...Basic operation procedure JOG operation Basic operation 4 32 ...
Страница 1090: ...Check first when you have a trouble Protective functions 6 50 ...
Страница 1110: ...Measurement of main circuit voltages currents and powers Precautions for maintenance and inspection 7 20 ...
Страница 1188: ...EC Declarations of Conformity Appendix A 48 A 7 EC Declarations of Conformity A 7 1 FR A820 FR A840 FR A842 series ...
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Страница 1212: ...EC Declarations of Conformity Appendix A 72 A 7 2 FR A846 series ...
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Страница 1216: ...EC Declarations of Conformity Appendix A 76 A 7 3 Frequency inverters with option unit FR A8NP ...
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