Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 64

2. SIGNALS AND WIRING
(b) MR-J4-03A6-RJ
Connector
Device Symbol
Encoder A- LA CN1-4
phase pulse
LAR CN1-5
(differential line
driver)
Encoder B- LB CN1-6
phase pulse
LBR CN1-7
(differential line
driver)
Encoder Z- LZ CN1-8
phase pulse
LZR CN1-9
(differential line
driver)
Encoder Z- OP CN1-33
phase pulse
(open-collector)
Analog monitor 1 MO1 CN1-26
Analog monitor 2 MO2 CN1-29
(4) Communication
(a) MR-J4-_A_-RJ 100 W or more
Connector
Device Symbol
RS-422/RS-485 SDP CN3-5
I/F
SDN CN3-4
RDP CN3-3
RDN CN3-6
(b) MR-J4-03A6-RJ
Connector
Device Symbol
RS-422 I/F SDP CN1-13
SDN CN1-14
RDP CN1-39
RDN CN1-40
TRE CN1-31
pin No.
These devices output pulses of encoder output pulse set in [Pr. PA15] 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 π/2.
The relation between rotation direction and phase difference of the A-
phase and B-phase pulses can be changed with [Pr. PC19].
The encoder zero-point signal is outputted in the differential line driver
type. One pulse is outputted per servo motor revolution. This turns on
when the zero-point position is reached. (negative logic)
The minimum pulse width is about 400 μs. For home position return using
this pulse, set the creep speed to 100 r/min or less.
The encoder zero-point signal is outputted in the open-collector type.
This is used to output the data set in [Pr. PC14] to between MO1 and LG in
terms of voltage.
Output voltage: 5 V ± 4 V
Resolution: 10 bits or equivalent
This signal outputs the data set in [Pr. PC15] to between MO2 and LG in
terms of voltage.
Output voltage: 5 V ± 4 V
Resolution: 10 bits or equivalent
pin No.
These are terminals for RS-422/RS-485 communication.
pin No.
These are terminals for RS-422 communication.
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Function and application
Function and application
Function and application
2 - 37
Control
I/O
mode
division
DO-2
DO-2
DO-2
Analog
output
Analog
output
Control
mode
I/O
division
Control
I/O
mode
division