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3. SIGNALS AND WIRING
Control
mode
Signal Symbol
Connector
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
DO-2
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.
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
Connector
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
Connector
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 output signals such as ALM and INP.
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.
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