Design; System Designing Procedure - Mitsubishi Electric A173UHCPU User Manual

2. DESIGN

2. DESIGN

2.1 System Designing Procedure

Motion system design
Design of independent motion system
Connection of peripheral equipment
This chapter provides those who will design and manage the motion system with the
procedures and instructions necessary to design the motion system.
For the system and parameter settings and programming method of the motion system,
refer to the operating and programming manuals.
This chapter does not describe the selection of the amplifiers, motors and MELSEC-A
series (I/O modules).
Refer to the corresponding manuals.
Design the system which uses the motion controller in the following procedure.
Select the CPU module according to the number of control axes and the number of
control I/O points.
Choose the motion functions to be installed according to the machinery and equipment
to be controlled (selection of the motion OS determines the peripheral positioning
packages).
Choose the number of A172SENCs and design connections according to the axis-by-
axis control system and depending on whether servo external signals are required or
not.
When there is mechanical home position and dog type home position return is made:
Near-zero point dog required
For speed control: Speed-position control change signal required
When overrun prevention is necessary: Stroke limits required
When axis-by-axis stop is necessary: STOP signal required
Select A172SENC and design connections depending on whether manual pulse
generators and synchronous encoders are required or not.
Choose I/O modules according to the specifications of the external equipment to be
controlled.
Choose A1SY42 when using the limit output which outputs ON/OFF according to the
present value of the specified axis.
Choose the main base, extension bases, extension power supplies and extension
cables and make I/O assignment according to the necessary number of A172SENCs
and A1SY42s and the number of I/O modules.
Select the servo amplifier and servo motor according to the motor capacity and speed
calculated from the machine mechanism to be controlled axis-by-axis.
Set servo amplifier connection by SSCNET and axis numbers and axis No.s.
Select the teaching unit when using the handy unit to perform JOG operation, teaching
or the like. Choose A31TU when the deadman switch is needed or choose A30TU
when not needed.
2 − 1
Refer to Section 2.2.
Refer to Section 1.5.4(3).
Refer to Section 1.5.4(3).
Refer to a MELSEC-A series
manual.
Refer to Section 1.5.3(3).
Refer to an applicable
servo amplifier manual .
Refer to Appendix 2.
Refer to Section 1.5.6(2).
Refer to Section 1.5.5(4).
Refer to Section 1.5.1(9).