11. OPTIONS AND PERIPHERAL EQUIPMENT
11 - 26
Table 11.2 Servo motor leakage current example (lgm)
Servo motor power [kW]
Leakage current [mA]
0.1 to 1
0.1
2
0.2
3
0.3
Table 11.3 Servo amplifier leakage current example (Iga)
Servo amplifier capacity [kW]
Leakage current [mA]
0.1 to 0.6
0.1
0.75 to 3
0.15
Table 11.4 Earth-leakage current breaker selection example
Servo amplifier capacity [kW]
Rated sensitivity current of earth-
leakage current breaker [mA]
MR-JE-10A to MR-JE-300A
15
(2) Selection example
Indicated below is an example of selecting an earth-leakage current breaker under the following
conditions.
Servo motor
HF-KN43
2 mm
2
× 5 m
2 mm
2
× 5 m
M
NV
Ig1
Iga
Ig2
Igm
Servo amplifier
MR-JE-40A
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 = 0.1 [mA]
Igm = 0.1 [mA]
Insert these values in equation (11.1).
Ig
10 • {0.1 + 0 + 0.1 + 1 • (0.1 + 0.1)}
4 [mA]
According to the result of calculation, use an earth-leakage current breaker having the rated sensitivity
current (Ig) of 4.0 mA or more.
An earth-leakage current breaker having Ig of 15 mA is used with the NV-SP/SW/CP/CW/HW series.
Summary of Contents for MELSERVO-JE MR-JE-100A
Page 23: ...1 FUNCTIONS AND CONFIGURATION 1 12 MEMO ...
Page 29: ...2 INSTALLATION 2 6 MEMO ...
Page 91: ...3 SIGNALS AND WIRING 3 62 MEMO ...
Page 171: ...5 PARAMETERS 5 44 MEMO ...
Page 195: ...6 NORMAL GAIN ADJUSTMENT 6 24 MEMO ...
Page 221: ...7 SPECIAL ADJUSTMENT FUNCTIONS 7 26 MEMO ...
Page 249: ...8 TROUBLESHOOTING 8 28 MEMO ...
Page 255: ...9 DIMENSIONS 9 6 MEMO ...
Page 263: ...10 CHARACTERISTICS 10 8 MEMO ...
Page 293: ...11 OPTIONS AND PERIPHERAL EQUIPMENT 11 30 MEMO ...