Mitsubishi Q2ASCPU User Manual page 46

(1) Wiring of power supply
(a) When voltage fluctuations are larger than the specified value, connect a
constant-voltage transformer.
(b) Use a power supply which generates minimal noise between wires and
between the programmable controller and ground. If excessive noise is
generated, connect an insulating transformer.
Insulating
transformer
(c) When a power transformer or insulating transformer is employed to
reduce the voltage from 200 VAC to 100 VAC, use one with a capacity
greater than those indicated in the following table.
Power Supply Module
A1S61PN
A1S62PN
(d) Separate the programmable controller's power supply line from the lines
for I/O devices and power devices as shown below.
When there is much noise, connect an insulation transformer.
(e) Taking rated current or inrush current into consideration when wiring the
power supply, be sure to connect a breaker or an external fuse that
have proper blown and detection.
When using a single programmable controller, a 10A breaker or an
external fuse are recommended for wiring protection.
Main
power supply
200VAC
On a control panel
Constant
voltage
transformer
Programmable
controller
Transformer Capacity
110VA
110VA
Programmable
controller
power supply
Relay
terminal
block
I/O power supply
Main circuit
power supply
31
Programmable
controller
Insulating
transformer
n: Stands for the number of power
n
supply modules.
n
Insulation
Transformer
Programmable
controller
T1
I/O equipment
Main circuit equipment
I/O
equipment