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3. SIGNALS AND WIRING
3.2.2 Signal explanations
For the I/O interfaces (symbols in I/O column in the table), refer to Section 3.4.2.
(1) Connector applications
Connector Name Function/Application
CN1A Connector for bus cable from preceding axis.
Used for connection with the controller or preceding-axis
servo amplifier.
CN1B Connector for bus cable to next axis
Used for connection with the next-axis servo amplifier or
for connection of the termination connector.
CN2 Encoder connector Used for connection with the servo motor encoder.
CN3
Communication connector
(I/O signal connector)
Used for connection with the personal computer.
Serves as an I/O signal connector when the personal
computer is not used.
(2) I/O signals
(a) Input signal
Signal Symbol
Connector Pin
No.
Function/Application I/O Division
Forced stop EM1
CN3
20
Disconnect EM1-SG to bring the servo motor to a forced stop
state, in which the servo is switched off and the dynamic
brake is operated.
In the forced stop state, connect EM1-SG to reset that state.
DI-1
(b) Output signals
Signal Symbol
Connector Pin
No.
Function/Application I/O Division
Electromagnetic brake
interlock
MBR
CN3
13
In the servo-off or alarm status, MBR-SG are disconnected.
When an alarm occurs, they are disconnected, independently
of the base circuit status.
DO-1
Encoder A-phase pulse
(Differential line driver)
LA
LAR
CN3
6
CN3
16
Encoder B-phase pulse
(Differential line driver)
LB
LBR
CN3
7
CN3
17
Outputs pulses per servo motor revolution set in parameter
No.38 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.
DO-2
Encoder Z-phase pulse
(Differential line driver)
LZ
LZR
CN3
8
CN3
18
The zero-phase signal of the encoder 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.22 to across
MO1-LG in terms of voltage. Resolution 10 bits
Analog
output
Analog monitor 2 MO2
CN3
14
Used to output the data set in parameter No.22 to across
MO2-LG in terms of voltage. Resolution 10 bits
Analog
output
(c) Power supply
Signal Symbol
Connector Pin
No.
Function/Application
Internal power output
for interface
VDD
CN3
10
Driver power output terminal for digital interface.
Used to output
24V 10% to across VDD-COM. Connect with COM.
Permissible current: 80mA
Power input for digital
interface
COM
CN3
5
Driver power input terminal for digital interface.
Used to input 24VDC (200mA or more) for input interface.
Connect with VDD.
Common for digital
interface
SG
CN3
3
Common terminal to VDD and COM. Pins are connected internally.
Separated from LG.
Control common LG
CN3
1
11
Common terminal to MO1 and MO2.
Shield SD Plate Connect the external conductor of the shield cable.