FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLC User's Manual - Positioning Control Edition
Example Connection
Appendix 3. MELSERVO-JN Series
Appendix 3-2 High-Speed Output Special Adapter
Apx. - 30
*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.
*4. Set the pulse output form by pulse output form setting switch.
*5. Extension blocks are used in the connection example.
Inputs and outputs built into the main unit are available in place of extension blocks.
Pulse output method setting switch Pulse output method
FP
RP side Forward/reverse pulse train
PLS
DIR side Pulse train + 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
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