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PLC User's Manual - Positioning Control Edition
Example Connection
Appendix 4. MELSERVO-C Series
Appendix 4-1 Main Unit (Transistor Output)
Apx. - 19
A
Common Items
B
Built-in
Positioning
Functions
Apx.
Example
Connection
2. FX3UC PLC
*1. Be sure to use the class-D grounding method (grounding resistance: 100
Ω
or less).
*2. Near-point signal (DOG)
*3. Set the servo amplifier parameter No.21 to "020".
*4. To ensure safety, use the forward rotation limit switch and the reverse rotation limit switch on both sides: the PLC side and
the servo amplifier side. Note that the limit switches on the PLC side should be activated slightly earlier than the limit
switches on the servo amplifier side.
OP
SG
PP
CR
NP
SD
CN1
4
5
9
13
7
11
SG
V+
ALM
12
1
2
SON
LSP
LSN
17
15
14
CN1
V2420
OPC19
RD 3
*3
DOG
*2
COM
X004
X017
FX
3UC
-32MT/D
X010
X014
X000
COM1
COM1
Y000
Y017
Y004
COM
X020
FX
2NC
-16EX
X021
X022
X023
X024
X026
X027
X037
X025
X030
COM1
FX
2NC
-16EYT
Y020
Y27
COM1
Photo-
coupler
Photo-
coupler
Immediate stop command
Zero return command
JOG(+)command
JOG(-)command
Forward rotation positioning command
Forward rotation limit (LSF)
*4
Reverse rotation limit (LSR)
*4
Reverse rotation positioning command
Stop command
24V DC
Class-D
grounding
*1
Zero Point
signal(PG0)
Servo ready
(RD)
Pulse train
CLEAR signal
MR-C
A
Series servo
amplifier
Servo error(ALM)
Servo ON
Forward rotation limit 2
*4
Reverse rotation limit 2
*4
Direction
Reverse rotation limit 2
(Servo amplifier side)
Reverse rotation limit 1
(Programmable
controller side)
LSR
Forward rotation limit 2
(Servo amplifier side)
Forward rotation limit 1
(Programmable
controller side)
LSF
Reverse rotation Forward rotation
Servo motor