Mitsubishi Electric Melsec-F FX3GC Series User Manual page 240

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
Example Connection
*1. Be sure to use the class-D grounding method (grounding resistance: 100 or less).
*2. Near-point signal (DOG)
*3. 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.
Reverse rotation limit 2
(Servo amplifier side)
Servo motor
*4. To detect absolute positions, connect this line to the PLC.
*5. Set the pulse output form by pulse output form setting switch.
Pulse output method setting switch
*6. Extension blocks are used in the connection example.
Inputs and outputs built into the main unit are available in place of extension blocks.
*7. Set the command pulse input form of the servo amplifier (PA13) MR-J4A to "021*" (negative logic, command input pulse
train filter: 500 kpps or less).
In "*", set "0" when the pulse output type of FX
train + Direction".
Appendix 1-3 Absolute Position Detection (Transistor Output)
To assign the inputs/outputs, refer to the following section.
Appendix 1-3-1 Sink Input and Sink Output
1. FX PLC
3S
FX -30MT/ES
3S
Photo-coupler
*1. Be sure to use the class-D grounding method (grounding resistance: 100 or less).
Apx. - 10
PLC User's Manual - Positioning Control Edition
Reverse rotation limit 1
(Programmable
controller side)
LSR
Reverse rotation
FP RP side

PLS DIR side

100 to 240 V AC
L
N
Class-D
grounding *1
S/S
0V
24V
X000
ABS (bit0)
X014
ABS (bit1)
X015
Send data ready
X016
X017
COM3
Servo-ON
Y006
ABS transfer mode
Y007
ABS request
Y010
Y011
Appendix 1-3 Absolute Position Detection (Transistor Output)
Forward rotation limit 1
(Programmable
controller side)
LSF
Forward rotation
Pulse output method
Forward/reverse pulse train
Pulse train + direction
-2HSY-ADP is "Forward/reverse pulse train", and set "1" when it is "Pulse
3U
Refer to Section 12.1 of "B. Built-in Positioning Function"
CN1
46
DICOM
20
DOCOM
24 V DC
ABSB0 ABSB0 22 22
ABSB123
23
ABSB1
ABST 25 25
ABST
SON 15
ABSM 17
18
ABSR
SD
Plate
Appendix 1. MELSERVO-J4 Series
Forward rotation limit 2
(Servo amplifier side)
MR-J4A
Series servo
amplifier