External Circuit Design - Mitsubishi Electric MELSEC-Q QD75M User Manual

3 SPECIFICATIONS AND FUNCTIONS

3.5 External circuit design

NFB
3-phase
200VAC to
230VAC
Q61P-A2 QnCPU
CP1
CP2
24VDC
Powerr
supply
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.
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
Alarm
Ra1
QD75M QX41
QY41P
COM COM
24VDC
24GDC
Forced stop
1
MC
Servo amplifer
L1
L2
L3
CP3
L11
L21
Alarm
Ra1
Forced stop
3 - 22
Operation ready
OFF ON
MC
U
MR-J2-B/ U
V
MR-J2S-B
V
W
W
Ground
Electromagnetic
breake
COM
MBR
Forced stop
EM1
2
SG
24VDC
MELSEC-Q
MC
SK
Servomotor
SM
Ra2
3
Ra2