11. OPTIONS AND PERIPHERAL EQUIPMENT
11 - 41
(2)
Selection example
Indicated below is an example of selecting an earth-leakage current breaker under the following
conditions.
NV
Ig1
Iga
Servo amplifier
MR-J4W3-222B
Cable
Ig2
Igm
M
Cable
Ig2
Igm
M
A-axis servo motor
HG-KR23
C-axis servo motor
HG-KR23
Cable
Ig2
Igm
M
B-axis servo motor
HG-KR23
2 mm
2
× 5 m
2 mm
2
× 5 m
Use an earth-leakage current breaker designed for suppressing harmonics/surges.
Find the terms of equation (11.1) from the diagram.
Ig1 = 20 •
5
1000
= 0.1 [mA]
Ig2 = 20 •
5
1000
= 0.1 [mA]
Ign = 0 (not used)
Iga = 0.15 [mA]
Igm = 0.1 [mA]
Insert these values in equation (11.1).
Ig
≥
10 • {0.1 + 0 + 0.15 + 1 • (0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1)}
≥
8.5 [mA]
According to the result of calculation, use an earth-leakage current breaker having the rated sensitivity
current (Ig) of 8.5 mA or more.
An earth-leakage current breaker having Ig of 15 mA is used with the NV-SP/SW/CP/CW/HW series.
Содержание MR-J4W2-0303B6
Страница 17: ...8 App 16 Status of general purpose AC servo products for compliance with the China RoHS directive App 58 ...
Страница 39: ...2 INSTALLATION 2 8 MEMO ...
Страница 97: ...4 STARTUP 4 20 MEMO ...
Страница 181: ...6 NORMAL GAIN ADJUSTMENT 6 28 MEMO ...
Страница 235: ...9 DIMENSIONS 9 6 MEMO ...
Страница 245: ...10 CHARACTERISTICS 10 10 MEMO ...
Страница 309: ...13 USING STO FUNCTION 13 14 MEMO ...
Страница 365: ...15 USING A DIRECT DRIVE MOTOR 15 24 MEMO ...
Страница 389: ...16 FULLY CLOSED LOOP SYSTEM 16 24 MEMO ...
Страница 461: ...17 APPLICATION OF FUNCTIONS 17 72 MEMO ...
Страница 556: ...APPENDIX App 41 ...
Страница 585: ...MEMO ...