6.4 Connecting Multiple Servo Amplifiers To One Emc Filter; Selection Method - Mitsubishi Electric MELSERVO EMC Installation Manuallines

6.4
Connecting multiple servo amplifiers to one EMC
filter
Confirm the EMC standard compliance of the entire machine or equipment on customer side.

Selection method

Molded-
Power
case
supply
circuit
breaker
When multiple servo amplifiers are connected to one EMC filter, if the total length of servo motor power cable is long, the
magnetic material used in the EMC filter may cause magnetic saturation and the expected noise attenuation properties may
not be obtained.
To obtain the expected noise attenuation properties for any servo amplifier, use an EMC filter that satisfies the following table
and calculation formula.
6 EMC COUNTERMEASURES AND EFFECTS
32

6.4 Connecting multiple servo amplifiers to one EMC filter

Molded-
case
EMC filter
circuit
breaker
Molded-
case
circuit
breaker
Molded-
case
circuit
breaker
Servo amplifier
(First)
Magnetic
Main circuit
contactor
power supply
Control circuit
power supply
Servo amplifier
(Second)
Magnetic
Main circuit
contactor
power supply
Control circuit
power supply
Servo amplifier
(nth)
Magnetic
Main circuit
contactor
power supply
Control circuit
power supply
Servo
motor
Servo motor power
cable length
Servo
motor
Servo motor power
cable length
Servo
motor
Servo motor power
cable length