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1 PRODUCT OUTLINE
1.1.5 Outline design of positioning system
PLC
CPU
Read,
write
and
etc.
Fig. 1.2 Outline of the operation of positioning system using QD75MH
The outline of the positioning system operation and design, using the QD75MH, is
shown below.
(1) Positioning system using QD75MH
QD75MH
Positioning command
S
S
Control command
C
N
Positioning command
OS
Monitor data
E
Control command
T
Monitor data
External input signal
I
of servo amplifier
Interface
F
+
Positioning
S
control
S
-
C
N
E
T
I
F
SSCNET
External input signal of servo amplifier (Refer to MR-J3-B
Instruction manual)
FLS
(Upper limit signal)
RLS
(Lower limit signal)
DOG
(Near-point dog signal)
Manual puse generator
A-phese/B-phese
External input signal (Refer to Section 3.4.2)
EMI
(Forced stop input signal)
FLS
(Upper limit signal)
RLS
(Lower limit signal)
CHG
(External command signal/switching signal)
STOP (Stop signal)
DOG
(Near-point dog signal)
:Either the QD75MH or servo amplifier can be designated as the
external input signal .(Refer to Section 5.2.3 Detailed parameters 1)
1 - 18
MR-J3-B
+
+
+
Speed
Current
Inverter
control
control
-
-
-
Current feedback
Speed feedback
Interface
Position feedback
MELSEC-Q
Servo
motor
M
PLG
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