Mitsubishi Electric MELSEC-Q Series User Manual page 79

(1) System design circuit example
ALL AC
POWER
TRANSFORMER
FUSE
CPU module
M9006
Ym
M9039
Yn
Y1
XM
M9084
PROGRAM
START SW
RA1
MC
MC
STOP SW
INPUT module
RA2
OUTPUT module
Ym
L
Yn
RA1
OUTPUT module
MC
MC2
MC1
MC2
MC2
Y1
RA2
The power-ON procedure is as follows:
For AC
1) Set the ON the power.
2) Switch CPU to RUN.
3) Turn on the start switch.
4) When the magnetic contactor (MC)
comes in, the output equipment is
powered and may be driven by the
program.
Input switched
when power supply
established.
RUN/STOP circuit
interlocked with RA1
(run monitor relay)
XM
Low battery alarm
(Lamp or buzzer)
RA1 switched ON by
M9039
(run monitor relay)
MC
Power to output equipment
switched OFF when the
STOP signal is given.
In the case of an emergency
stop or a stop caused
by a limit switch.
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.
Mixed AC and DC
POWER
TRANSFORMER
FUSE
CPU module
M9006
Ym
M9039
Yn
XM
TM
TM
M9084
TM
MC1 N0 M10
N0 M10
PROGRAM
START SW
RA1
MC
MC
STOP SW
INPUT module
RA2
XM
OUTPUT module
Ym
L
Yn
RA1
OUTPUT module
MC2
MC1
MC1
MC2
For AC/DC
1) Set the ON the power.
2) Switch 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 magnetic contactor (MC) comes in,
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.)
45
TRANSFORMER
FUSE
DC
POWER
SUPPLY
(-) (+)
FUSE
Set time for DC
power supply to
be established.
RA2
Voltage relay is
recommended
Low battery alarm
(Lamp or buzzer)
RA1 switched ON by
M9039
(run monitor relay)
Power to output equipment
switched OFF when the
STOP signal is given.
In the case of an emer-
MC MC
gency stop or a stop
caused by a limit switch.