Mitsubishi Electric MELSEC Q Series User Manual page 46

3 DESIGN
POINT
(1) (Note-1): Configure up the power supply circuit which switch off the electromagnetic contactor (MC) after detection alarm occurrence
on the PLC CPU.
(2) (Note-2): It is also possible to use a full wave rectified power supply as the power supply for the electromagnetic brake.
(3) (Note-3): Set the servo amplifier by setting the rotary switch of servo amplifier referring Section 4.2.1.
(4) (Note-4): It recommends using one leakage breaker for one servo amplifier. When electric power is supplied to multiple servo amplifiers
for one leakage breaker, select the wire connected to the servo amplifier according to the capacity of the leakage breaker.
(5) (Note-5): The status of forced stop input signal can be confirmed with "
MC
CP3
(Note-1): When the control power supply of servo amplifier is shut off, it is not possible to communicate with the servo amplifier after that.
Example) When the control power supply L11/L21 of servo amplifier in above
communicate with the servo amplifier
shut off the main circuit power supply L1/L2/L3, and do not shut off the control power supply L11/L21.
(Note-2): Be sure to shut off the both of main circuit power supply L1/L2/L3 and control power supply L11/L21 at the time of exchange of
servo amplifier. At this time, it is not possible to communicate between the servo amplifier and QD74MH. Therefore, be sure to
exchange the servo amplifier after stopping the operating of machine beforehand.
(Note-3): The dynamic brake is operated, and servomotor occurs to the free run when EM1 (forced stop) of servo amplifier turn OFF. At the
time, the display shows the servo forced stop warning (E6). During ordinary operation, do not used forced stop signal to alternate
stop and run. The service life of the servo amplifier may be shortened.
NFB2
(Note-4)
L1 MR-J3-B
L2
A
L3
(Note-3)
L11
0
L21
DICOM
SSCNET CN1A ALM
EM1
CN1B
DOCOM
NFB3
(Note-4)
L1 MR-J3-B
L2
B
L3
(Note-3)
L11
L21
DICOM
CN1A ALM
EM1
CN1B
DOCOM
NFB4
(Note-4)
L1 MR-J3-B
L2
C
L3
(Note-3)
L11
L21
DICOM
CN1A ALM
EM1
CN1B
DOCOM
C
. If only a specific servo amplifier control power supply is shut off, be sure to
3 - 5
Forced stop input status".
Md.103
U
U
V
V SM
W
W
Electro-
magnetic
Ground
brake
(Note-2)
Ra3
Ra2
24VDC
U
U
V
V SM
W
W
Electro-
magnetic
Ground
brake
(Note-2)
Ra4
Ra2
24VDC
U
U
V
V SM
W
W
Electro-
magnetic
Ground
brake
(Note-2)
Ra5
Ra2
24VDC
B
figure is shut off, it is also not possible to
MELSEC-Q
Ra3
Ra4
Ra5