SMC Networks LECSB Series, Руководство по эксплуатации

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12 - 31
12. OPTIONS AND AUXILIARY EQUIPMENT
Table 12.4 Servo motor’s leakage current example (Igm) Table 12.5 Driver's leakage current example (Iga)
Servo motor power
[kW]
Leakage current
[mA]
Driver capacity
[kW]
Leakage current
[mA]
0.05 to 1 0.1 0.1 to 0.6 0.1
2 0.2 0.75 to 3.5 (Note) 0.15
3.5 0.3 5 7 2
5 0.5 11 15 5.5
7 0.7 22 7
11 1.0 Note. For the 3.5kW of 400V class, leakage current is 2mA,
which is the same as for 5kW and 7kW. 15 1.3
22 2.3
Table 12.6 Leakage circuit breaker selection example
Driver
Rated sensitivity current of
leakage circuit breaker [mA]
LECSB2-
□
LECSB1-
□
15
(2) Selection example
Indicated below is an example of selecting a leakage current breaker under the following conditions.
Servo motor
HF-KP43
2mm
2
5m 2mm
2
5m
M
NV
Ig1 Iga Ig2 Igm
Servo amplifier
MR-J3-40A
Use a leakage current breaker generally available.
Find the terms of Equation (12.1) from the diagram.
Ig1 20
1000
5
0.1 [mA]
Ig2 20
1000
5
0.1 [mA]
Ign 0 (not used)
Iga 0.1 [mA]
Igm 0.1 [mA]
Insert these values in Equation (12.1).
Ig
10 {0.1 0 0.1 1 (0.1 0.1)}
4.0 [mA]
According to the result of calculation, use a leakage current breaker having the rated sensitivity current (Ig)
of 4.0[mA] or more. A leakage current breaker having Ig of 15[mA] is used with the NV-SP/SW/CP/CW/HW
series.
Driver
LECSB
□
-S8
LE-
□
-
□