User`s manual

3 - 6
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)
interlocked with RA1
(run monitor relay)
RUN/STOP circuit
Power to output
equipment switched
OFF when the STOP
signal is given.
START SW
STOP SW
MC
RA1
MC
RA2
XM
L
Ym
Yn
Output module
MC2
MC1
MC1
RA1
M10
Program
CPU
module
Transformer
Fuse
Power suppl
y
MC2
MC
In the case of an emergency
stop or a stop caused by a
limit switch.
Power to output equipment
switched OFF when the
STOP signal is given.
Ym
SM52
SM52
SM403
SM403
TM
XM
MC1
N0
M10
TM
L
RA1
Ym
Yn
RA1
MC
Input switched when
power supply established
ON when run
by SM403
Low battery alarm
(Lamp or buzzer)
Voltage relay is
recommended
Set time for
DC power
supply to be
established
FOR AC/DCFOR AC
Ym
Yn
(-) ( )
MC
Yn
DC power
RA2
Transformer
Fuse
Fuse
Output module
MC
MC2
MC1
MC1
MC2
Output module
MC
Input module
Output module
ON when run by SM403
Low battery alarm
(Lamp or buzzer)
START SW
STOP SW
Transformer
Fuse
CPU module
Power supply
Program
MC
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.
+
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.)