Power Supply Circuit Design - Mitsubishi Electric MR-MQ100 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 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 systems, and electromagnetic
noises from conductors. To avoid such troubles, set the 24VDC power supply
according to application.
When there is much leakage current, connect a leakage current breaker.
Main power
supply
100/200VAC
NFB or ELB
100/200/400VAC
NFB or ELB
Motion
controller
Insulation
power
transformer
supply
CP
I/O power
T1
supply
CP
Main
power supply
CP
Main circuit power supply
for servo amplifier
MC
Control power supply
for servo amplifier
3 - 6
24VDC
Motion
power
controller
supply
24VDC
I/O devices
power
supply
Main circuit device
Servo amplifier