System Design Circuit Examples - Mitsubishi Electric MELSEC iQ-R Series Configuration Manual

System design circuit examples

When the ERR contact of the power supply module is not used
AC power
Power supply
Transformer
Fuse
CPU module
SM52
SM403
Program
Start
switch
RA1
MC Stop
switch
Input module
Output module
Ym
Yn
Output module
MC
MC2
MC1
*1 Set a time required for DC power supply to be established.
*2 The programmable controller starts when RA1 (run monitor relay) turns on.
*3 The output devices are turned off at an emergency stop or a stop caused by a limit switch.
*4 Configure external interlock circuits for conflicting operations such as forward/reverse rotations and the parts where the incorrect output
may cause damage to the machines or accidents.
APPX
188
Appendix 8 General Safety Requirements
A signal is input when the
DC power connection is
established.
Ym
*2
Start/Stop circuit
Yn
MC
Low battery alarm
(Lamp or buzzer)
L
This relay turns on when the
CPU module starts running
by SM403.
RA1
MC
Power supplied to the output
devices is shut off when the
stop switch is pressed.
MC1
MC2
Interlock circuits
AC and DC power
Power supply
Transformer Transformer
Fuse
CPU module
SM52
Ym
SM403
Yn
XM
TM
TM
MC1 N0 M10
N0
M10
Start
Program
switch
RA1
MC
MC Stop
switch
Input module
RA2
XM
Output module
Ym
L
Yn
*3
RA1
Output module
*4
MC2
MC1
MC1
MC2
Fuse
DC
power
(-) (+)
Fuse
Set a TM value.
RA2
Use of a voltage relay is
recommended.
Low battery alarm
(Lamp or buzzer)
This relay turns on when the
CPU module starts running
by SM403.
MC MC
Power supplied to the output
devices is shut off when the
stop switch is pressed.
*1
*3