Design; System Designing Procedure - Mitsubishi Electric MELSEC Q Series User Manual

3 DESIGN

3. DESIGN

3.1 System Designing Procedure

Design the system which uses the QD74MH in the following procedure.
Positioning control system design
External circuit design
Layout design within control panel
Select the QD74MH according to number of control axes.
Select I/O modules according to the specifications of the external
equipment to be controlled.
Select the servo amplifier and servo motor according to the motor
capacity and number of revolution from the machine mechanism
to be controlled each axis.
Power supply circuit design
Design the power supply circuit which supplies power to such
system components as the QD74MH, I/O equipment and servo
amplifiers, etc., taking into consideration the protective
coordination and noise suppression techniques.
Safety circuit design
Design the operation-ready circuit which stops the system at
occurrence of any alarm such as a QD74MH or servo amplifier
alarm or the emergency stop, the circuit which avoids a
malfunction while power is unstable at power-on, and the
electromagnetic brake circuit for servomotors.
Layout design based on the design environment such as
temperatures and vibrations in consideration of heat generated
from modules and handling of module installation.
3 - 1
MELSEC-Q
3
Refer to MELSEC-Q
series manual.
Refer to the servo
amplifier manual.
Refer to section 3.2
Refer to section 3.2.1
Refer to section 3.2.2
Refer to section 4.1