Mitsubishi MELSEC L Series User Manual page 401

(b) With END cover with ERR. terminal
Input switched
when power
supply
established.
END cover with ERR. terminal
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 .
The power-on procedure is as follows:
• For AC and DC power
[1] Power on the programmable controller.
[2] Set the CPU module to RUN.
[3] RA2 turns on when DC power is on.
[4] Timer (TM) turns on when DC power establishes the rated voltage.
(The timer value is the period of time from when RA2 turns on to when DC power establishes the rated
voltage. Set this value to 0.5 seconds.)
[5] Turn on the start switch.
[6] When the electromagnetic contactor (MC) turns on, the output devices will be activated by the program.
(If a voltage relay is used at RA2, no timer (TM) is required in the program.)
Power supply
FOR AC/DC
Transformer Transformer
Fuse Fuse
CPU module
DC
SM52
power
Ym
SM403
Yn
XM
TM
TM
MC1 NO M10
NO
M10
Program
START
SW
RA3
RA1
MC
STOP
MC
SW
RA2
XM
Output module
Ym
L
Yn
RA1
ERR.
RA3
Output module
MC2
MC1
MC1
MC2
(-)(+)
Fuse
Set time for DC
power supply to
be established.
START/STOP circuit
Start enabled when
RA1 as RUN output
for programmable
controller turns on.
RA2
Voltage relay is
recommended
Warning output
(lump or buzzer)
ON when run by
SM403
This relay turns off if the
ERR. contact turns off
(a stop error occurs).
MC MC
Output equipment is
powered off at STOP.
When the emergency
stop, when stopping by
the limit, or when ERR.
contact is off
APPENDICES
A
399