Power Supply Circuit Design - Mitsubishi Electric Q170MSCPU User Manual

3 DESIGN

3.2.1 Power supply circuit design

This section describes the protective coordination and noise suppression techniques of
the power supply circuit.
(1) Separation and protective coordination (leakage current protection,
over current protection) of power supply lines
Separate the lines for Motion controller's power supplies from the lines for I/O
devices and servo amplifiers as shown below.
When there is much noise, connect an insulation transformer.
The Motion controller may malfunction as it is affected by various noises such as
electric path noises from the power supply lines, and electromagnetic noises
from contactors. To avoid such troubles, set the 24VDC power supply according
to application.
Main power
supply
100/200VAC
100/200/400VAC
Motion
controller
power supply
MCCB CP
I/O power supply
CP
Motor power supply
CP
Main circuit power supply
for servo amplifier
MCCB
Control power supply
for servo amplifier
CP
3 - 7
Isolation
transformer
24VDC
power
supply
T1
I/O equipment
Motor equipment
Servo amplifier
Motion
controller