MITSUBISHI ELECTRIC MR-E- A/AG - Manual (Page 49)

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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.