Mitsubishi Electric Q12DCCPU-V User Manual page 226

6
PREPARATORY PROCEDURES AND SETTING
(2) Circuit example for system design (When using the ERR. contact of the
Figure 6.4 Circuit example for system design (when using the ERR. contact of the power supply module)
The power-up procedure is as follows:
For AC/DC
[1] Turn on the power.
[2] Set the C Controller module to "RUN".
[3] When DC power is applied, RA2 is turned on.
[4] When RA2 turns on, XM is turned on.
Upon 100% establishment of the DC input signal, processing is started by the user program.
[5] Turn on the start switch.
[6] When the magnetic contactor (MC) turns on, the output equipment is driven by the user program.
6
- 8 6.2 Fail-Safe Circuit
power supply module)
Power supply
START
SW
MC STOP
SW
Output module
Power supply module
Output module
Interlock circuits
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 .
FOR AC/DC
Transformer Transformer
Fuse Fuse
C Controller module
DC
power
(-) (+)
Fuse
User
program *1
RA1 RA3
MC
RA2
RA2
XM
Ym
L
Yn
RA1
ERR.
RA3
MC MC
MC2
MC1
MC1
MC2
RUN/STOP circuit
Started when RA1
(control start output of
C Controller module)
turns ON.
Voltage relay is
recommended
Low battery alarm
(Lamp or buzzer)
Turns ON at start of
C Controller module
user program.
This relay turns off if the
ERR. contact turns off
(a stop error occurs).
Power to output
equipment is turned
off when the STOP
signal is given.
The stop switch turns
off by an emergency
stop, a stop caused by
exceeding a limit value,
or turning off the ERR.
contact.
*1