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MELSEC-Q
3 SPECIFICATIONS AND FUNCTIONS
3.5 External circuit design
The outline diagrams of the internal circuits for the QD75M1 external device
connection interface are shown below.
(1) Example when using the MR-J2-B/MR-J2S-B
3-phase
200VAC to
230VAC
SM
U
V
W
Ra2
Ground
Electromagnetic
breake
CP3
Ra2
U
V
W
L1
L2
L3
L11
L21
MR-J2-B/
MR-J2S-B
COM
MBR
EM1
SG
24VDC
Ra1
OFF
ON
MC
MC
SK
COMCOM
Ra1
QY41P
QX41QD75MQnCPUQ61P-A2
CP1
CP2
MC
24VDC
Powerr
supply
24VDC
24GDC
NFB
Forced stop
Alarm
Servo amplifer
Forced stop
Operation ready
Servomotor
Alarm
Forced stop
1
2
3
1: Configure up the power supply circuit which switch off the electromagnetic contactor (MC) after detection alarm
occurrence on the PLC CPU.
2: 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.
3: Power supply for the electromagnetic brake is possible to use a full wave rectified power supply.
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