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Chapter 2 System Configuration
2.1 General image of system
The general image of the system, including such as the QD77MS, PLC CPU and
peripheral devices is shown below.
Synchronous encoder via servo amplifier
Q171ENC-W8:
Up to 4 modules via MR-J4-_B-RJ
MR-J3(W)-_B type servo amplifier
MR-J4(W)-_B type servo amplifier
MR-JE-_B type servo amplifier
Expansion system
Expansion cable
Main base unit
Servo
motor
Servo
motor
Servo
motor
Personal computer
Power supply module
CPU module
QD77MS
SSCNET
cable
External input
signal cable
USB cable
Ethernet cable
QD77MS4
RUN
ERR.
AX1
AX4
AX2
AX3
QD77MS4
AX2
AX1
AX4
AX3
RS-232 cable
External input signals of servo amplifier
Upper stroke limit
Lower stroke limit
Near-point dog
Upper stroke limit (4 points)
Forced stop input (24VDC)
Manual pulse generator
/Incremental synchronous encoder 1
External command signal
/Switching signal (4 points)
Lower stroke limit (4 points)
Near-point dog signal (4 points)
Stop signal (4 points)
Servo driver VCII series manufactured
by Nikki Denso Co., Ltd.
Inverter FR-A700 series
QD77MS2 :Up to 2 axes
QD77MS4 :Up to 4 axes
QD77MS16 :Up to 16 axes