Mitsubishi Electric MELSERVO-JN Series Instruction Manual page 361

13. POSITIONING MODE
(3) Output signals
Connector
Signal Symbol
Encoder OP
Z-phase pulse
(Open
collector)
Encoder LA
A-phase pulse LAR
(Differential
line driver)
Encoder LB
B-phase pulse LBR
(Differential
line driver)
Encoder LZ
Z-phase pulse LZR
(Differential
line driver)
(4) Power supply
Connector
Signal Symbol
Digital I/F DICOM
power supply
input
Open collector OPC
power input
Digital I/F DOCOM
common
Control LG
common
Shield SD
pin No.
CN1-21 Outputs the zero-point signal of the encoder. One pulse is output per
servo motor revolution. OP turns on when the zero-point position is
reached. (Negative logic)
The minimum pulse width is about 400μs. For home position return
using this pulse, set the creep speed to 100r/min. or less.
CN1-15 Outputs pulses per servo motor revolution set in parameter No. PA15
CN1-16 in the differential line driver type.
In CCW rotation of the servo motor, the encoder B-phase pulse lags
the encoder A-phase pulse by a phase angle of /2.
The relationships between rotation direction and phase difference of
CN1-17
the A- and B-phase pulses can be changed using parameter No.
CN1-18
PC13.
CN1-19 The same signal as OP is output in the differential line driver type.
CN1-20
pin No.
CN1-1 Used to input 24VDC (24VDC±10% 200mA) for I/O interface.
The power supply capacity changes depending on the number of I/O
interface points to be used.
For a sink interface, connect the positive terminal of the 24VDC
external power supply to DICOM.
For a source interface, connect the negative terminal of the 24VDC
external power supply to DICOM.
CN1-2 When inputting a pulse train in the open-collector system, supply this
terminal with the positive (+) power of 24VDC.
CN1-13 Common terminal for input signals such as SON and EM1. Separated
from LG.
For a sink interface, connect the negative terminal of the 24VDC
external power supply to DOCOM.
For a source interface, connect the positive terminal of the 24VDC
external power supply to DOCOM.
CN1-14 Common terminal for OP.
Plate Connect the external conductor of the shielded wire.
Functions/Applications
Functions/Applications
13 - 10
Positioning
I/O
mode
division
CP CL
DO-2
DO-2
DO-2
Positioning
I/O
mode
division
CP CL