Mitsubishi Electric MELSERVO-JN Series Instruction Manual page 70

3. SIGNALS AND WIRING
(2) Input signals
Signal Symbol
Forward rotation PP
pulse train NP
Reverse rotation PG
pulse train NG
Note. For the internal speed control mode or the internal torque control mode, PP or NP cannot be assigned to the CN1-23 pin or CN1-
25 pin. When assigning an input device to the CN1-23 pin or CN1-25 pin, supply OPC with 24VDC ( ) and use it at the sink
interface. It cannot be used at source interface.
(3) Output signals
Signal Symbol
Encoder Z-phase OP
pulse
(Open collector)
Encoder A-phase LA
pulse LAR
(Differential line
driver)
Encoder B-phase LB
pulse LBR
(Differential line
driver)
Encoder Z-phase LZ
pulse LZR
(Differential line
driver)
(4) Power supply
Signal Symbol
Digital I/F power DICOM
supply input
Open collector OPC
power input
DOCOM CN1-13 Common terminal for input signals such as SON and EM1. Pins are
Digital I/F
common
Control common LG
Shield SD
Connec-
tor pin No.
CN1-23 Used to input command pulses.
CN1-25 In the open collector system (max. input frequency 200kpps)
CN1-22 Forward rotation pulse train across PP-DOCOM
CN1-24 Reverse rotation pulse train across NP-DOCOM
In the differential receiver system (max. input frequency 1Mpps)
Forward rotation pulse train across PG-PP
Reverse rotation pulse train across NG-NP
The command input pulse form can be changed using parameter No. PA13.
Connec-
tor 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 400 s. 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 in
CN1-16 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 the
CN1-17
A- and B-phase pulses can be changed using parameter No. PC13.
CN1-18
CN1-19 The same signal as OP is output in the differential line driver type.
CN1-20
Connec-
tor pin No.
Used to input 24VDC (200mA) for I/O interface. The power supply
CN1-1
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.
When inputting a pulse train in the open collector system, supply this
CN1-2
terminal with the positive ( ) power of 24VDC.
connected internally.
Separated from LG.
For a sink interface, connect the negative terminal of the 24VDC external
power supply to DICOM.
For a source interface, connect the positive terminal of the 24VDC
external power supply to DICOM.
CN1-14 Common terminal for OP.
Connect the external conductor of the shield cable.
Plate
Functions/Applications
Functions/Applications
Functions/Applications
3 - 21
Control
I/O
mode
division
P S T
DI-2 (Note)
Control
I/O
mode
division
P S T
DO-2
DO-2
DO-2
Control
I/O
mode
division
P S T