Instruction manual

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3 DESIGN
(2) System design circuit example of the PLC I/O
(a) System design circuit example(when not using ERR terminal
of power supply module)
Output module
Output module
Output module
Power to output
equipment switched
OFF when the STOP
signal is given.
START SW
STOP SW
MC
RA1
M10
CPU
module
Transformer
Fuse
Power supply
In the case of an emergency
stop or a stop caused by a
limit switch.
SM52
SM403
XM
TM
FOR AC/DC
(-)
Transformer
Fuse
Interlock circuits as necessary.
Provide external interlock
circuits for conflicting
operations, such as forward
rotation and reverse rotation,
and for parts that could
damage the machine or cause
accidents if no interlock were
used.
N0
In the case of an
emergency stop or a
stop caused by a limit
switch.
(+)
MC
L
Yn
MC
MC
Ym
RA1
MC1
MC2
MC2
MC1
Yn
Ym
TM
MC1 NO M10
MC
RA2
L
RA1
MC1
MC2
MC2
MC1
FOR AC
Ym
Yn
Fuse
Program
Power supply
Transformer
CPU module
SM52
SM403
START SW
RA1
STOP SW
MC
Input module
Output module
ON when run by SM403
Low battery alarm
(Lamp or buzzer)
Power to output equipment
switched OFF when the
STOP signal is given.
Interlocked with RA1
(Run monitor relay)
RUN/STOP circuit
Input switched when
power supply established
Fuse
Program
DC power
Set time for DC power
supply to be established.
Voltage relay is
recommended.
ON when run by SM403
Low battery alarm
(Lamp or buzzer)
RA2
XM
MC MC
Yn
Ym
The power-ON procedure is as follows:
For AC For AC/DC
1) Switch power ON.
2) Set CPU to RUN.
3) Turn ON the start switch.
4) When the magnetic contactor (MC) comes on, the output
equipment is powered and may be driven by the program.
1) Switch power ON.
2) Set CPU to RUN.
3) When DC power is established, RA2 goes ON.
4) Timer (TM) times out after the DC power reaches 100[%].
(The TM set value should be the period of time from when
RA2 goes ON to the establishment of 100[%] DC voltage.
Set this value to approximately 0.5 seconds.)
5) Turn ON the start switch.
6) When the electromagnetic contactor (MC) comes on, the
output equipment is powered and may be driven by the
program. (If a voltage relay is used at RA2, no timer (TM) is
required in the program.)