Mitsubishi Electric MELSERVO MR-J2S- A Instruction Manual page 69

3. SIGNALS AND WIRING
Signal Symbol
Encoder Z-phase OP
pulse
(Open collector)
Encoder A-phase LA
pulse
(Differential line LAR
driver)
Encoder B-phase LB
pulse
(Differential line LBR
driver)
Encoder Z-phase LZ
pulse
(Differential line LZR
driver)
Analog monitor 1 MO1
Analog monitor 2 MO2
(3) Communication
Signal Symbol
RS-422 I/F SDP
SDN
RDP
RDN
RS-422 TRE
termination
RS-232C I/F RXD
TXD
Connector pin No.
7kW or 11kW or
less more
CN1A CN1A Outputs the zero-point signal of the encoder. One pulse is
14 14 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.
CN1A CN1A Outputs pulses per servo motor revolution set in
6 6 parameter No. 27 in the differential line driver system.
CN1A CN1A In CCW rotation of the servo motor, the encoder B-phase
16 16 pulse lags the encoder A-phase pulse by a phase angle of
/2.
CN1A CN1A
The relationships between rotation direction and phase
7 7
difference of the A- and B-phase pulses can be changed
CN1A CN1A
using parameter No. 54.
17 17
CN1A CN1A The same signal as OP is output in the differential line
5 5 driver system.
CN1A CN1A
15 15
CN3 CN4 Used to output the data set in parameter No.17 to across
4 1 MO1-LG in terms of voltage. Resolution 10 bits
CN3 CN4 Used to output the data set in parameter No.17 to across
14 2 MO2-LG in terms of voltage. Resolution 10 bits
POINT
Refer to Chapter 14 for the communication function.
Connec-
tor pin
No.
CN3 RS-422 and RS-232C functions cannot be used together.
9 Choose either one in parameter No. 16.
CN3
19
CN3
5
CN3
15
CN3 Termination resistor connection terminal of RS-422 interface.
10 When the servo amplifier is the termination axis, connect this
terminal to RDN (CN3-15).
CN3 RS-422 and RS-232C functions cannot be used together.
2 Choose either one in parameter No. 16.
CN3
12
Functions/Applications
Functions/Applications
3 - 22
Control
I/O mode
division
P S T
DO-2
DO-2
DO-2
Analog
output
Analog
output
Control
I/O
mode
division
P S T