Mitsubishi MELSEC Q Series User Manual

5 - 6
5.2 Fail-safe Circuit
5
SETTINGS AND PROCEDURES BEFORE OPERATION
(1) System design circuit example (when not using ERR contact of power
supply module)
Figure 5.3 System design circuit example (when not using ERR contact)
START SW
Fuse
Transformer
Fuse
Transformer
Fuse
Transformer
Power supply
For AC For AC/DC
C Controller
module
C Controller
module
DC
power
User
program *1
User
program *2
STOP SW
MC
RA1
MC
RA1
MC
Input module
Output module
Ym
L
Output module
Output module
Output module
Yn
Ym
Yn
RA1
L
RA1
MC1
MC2
MC2
MC1
MC1
MC2
MC2
MC1
MC
Interlock circuits as
necessary.
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.
MC
Turns ON at start
of C Controller
module user
program.
Low battery alarm
(Lamp or buzzer)
RUN/STOP circuit
Started when RA1
(control start output
of C Controller
module) turns ON.
Power supply
(-) (+)
START SW
STOP SW
MC
RA2
XM
MC 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.
Turns ON at start
of C Controller
module user
program.
Low battery alarm
(Lamp or buzzer)
RA2
Voltage relay is
recommended
Fuse
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.

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English