Signals and wiring – MITSUBISHI ELECTRIC MR-E- A/AG User Manual
Page 49
3 - 18
3. SIGNALS AND WIRING
Control
mode
Signal
Symbol
Connec-
tor pin
No.
Functions/Applications
I/O
division
P
S
Encoder Z-phase
pulse
(Open collector)
OP
CN1-21 Outputs the zero-point signal of the encoder. One pulse is output
per servo motor revolution. OP and LG are connected 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.
DO-2
Encoder A-phase
pulse
(Differential line
driver)
LA
LAR
CN1-15
CN1-16
Encoder B-phase
pulse
(Differential line
driver)
LB
LBR
CN1-17
CN1-18
Outputs pulses per servo motor revolution set in parameter No.
27 in the differential line driver system. 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 A- and B-phase pulses can be changed using parameter No.
54.
DO-2
Encoder Z-phase
pulse
(Differential line
driver)
LZ
LZR
CN1-19
CN1-20
The same signal as OP is output in the differential line driver
system.
DO-2
Analog monitor 1
MO1
CN3-4
Used to output the data set in parameter No.17 to across MO1-LG
in terms of voltage. Resolution 10 bits
Analog
output
Analog monitor 2
MO2
CN3-6
Used to output the data set in parameter No.17 to across MO2-LG
in terms of voltage. Resolution 10 bits
Analog
output
(3) Communication
Control
mode
Signal
Symbol
Connec-
tor pin
No.
Functions/Applications
I/O
division
P
S
RS-232C I/F
RXD
TXD
CN3-1
CN3-2
RS-232C communication interface.
(4) Power supply
Control
mode
Signal
Symbol
Connec-
tor pin
No.
Functions/Applications
I/O
division
P
S
Digital I/F power
supply input
VIN
CN1-1
Used to input 24VDC for input interface.
Connect the positive terminal of the 24VDC external power
supply.
24VDC 10%
Open collector
power input
OPC
CN1-2
When inputting a pulse train in the open collector system, supply
this terminal with the positive ( ) power of 24VDC.
Digital I/F
common
SG
CN1-13 Common terminal for input signals such as SON and EMG. Pins
are connected internally.
Separated from LG.
Control common
LG
CN1-14 Common terminal for OP, MO1, and MO2.
Pins are connected internally.
Shield
SD
Plate
Connect the external conductor of the shield cable.