13.OPTIONS AND AUXILIARY EQUIPMENT

(2)Selection example

Indicated below is an example of selecting a leakage current breaker under the following conditions:

NV

2mm25m2mm25m

Servo amplifier MR-J2S-60A

SM Servo motor HC-MFS73

 

 

 

 

 

 

 

 

 

 

 

 

Ig1

Iga

Ig2

Igm

Use a leakage current breaker generally available.

Find the terms of Equation (13.2) from the diagram:

Ig1

 

20

5

 

 

0.1 [mA]

 

1000

 

 

 

 

Ig2

 

20

5

 

 

0.1 [mA]

 

1000

 

 

 

 

 

Ign 0 (not used)

Iga 0.1 [mA]

Igm 0.1 [mA]

Insert these values in Equation (13.2):

Ig 10 {0.100.13 (0.10.1)}

8.0 [mA]

According to the result of calculation, use a leakage current breaker having the rated sensitivity current (Ig) of 8.0[mA] or more. A leakage current breaker having Ig of 15[mA] is used with the NV- CA/CS/SS series.

13 - 29

Page 222
Image 222
Mitsubishi Electronics MR-J2S- A instruction manual Selection example