3. SIGNALS AND WIRING
3 - 36
(3) Output signal
Control
mode
Device Symbol
Connector
pin No.
Function and application
I/O
division
PST
Encoder A-
phase pulse
(differential line
driver)
LA
LAR
CN1-4
CN1-5
DO-2
Encoder B-
phase pulse
(differential line
driver)
LB
LBR
CN1-6
CN1-7
The encoder output pulses set in [Pr. PA15] are outputted in the differential
line driver type.
In CCW rotation of the servo motor, the encoder B-phase pulse lags the
encoder A-phase pulse by a phase angle of π/2.
The relation between rotation direction and phase difference of the A-
phase and B-phase pulses can be changed with [Pr. PC19].
Encoder Z-
phase pulse
(differential line
driver)
LZ
LZR
CN1-8
CN1-9
The encoder zero-point signal is outputted in the differential line driver
type. One pulse is outputted per servo motor revolution. This turns on
when the zero-point position is reached. (negative logic)
The minimum pulse width is about 400 μs. For home position return using
this pulse, set the creep speed to 100 r/min. or less.
DO-2
Encoder Z-
phase pulse
(open-collector)
OP CN1-33 The encoder zero-point signal is outputted in the open-collector type. DO-2
Analog monitor 1 MO1 CN6-3 This is used to output the data set in [Pr. PC14] to between MO1 and LG in
terms of voltage.
Resolution: 10 bits or equivalent
Analog
output
Analog monitor 2 MO2 CN6-2 This signal outputs the data set in [Pr. PC15] to between MO2 and LG in
terms of voltage.
Resolution: 10 bits or equivalent
Analog
output
(4) Communication
Control
mode
Device Symbol
Connector
pin No.
Function and application
I/O
division
PST
RS-422 I/F SDP CN3-5 These are terminals for RS-422 communication.
SDN CN3-4
RDP CN3-3
RDN CN3-6
(5) Power supply
Control
mode
Device Symbol
Connector
pin No.
Function and application
I/O
division
PST
Digital I/F
power supply
input
DICOM CN1-20
CN1-21
Input 24 V DC (24 V DC ± 10% 500 mA) to I/O interface. The power supply
capacity changes depending on the number of I/O interface points to be
used.
For sink interface, connect + of 24 V DC external power supply.
For source interface, connect - of 24 V DC external power supply.
Open-collector
power input
OPC CN1-12 When inputting a pulse train in the open-collector type, supply this terminal
with the positive (+) power of 24 V DC.
Digital I/F
common
DOCOM CN1-46
CN1-47
Common terminal of input signal such as EM2 of the servo amplifier. This
is separated from LG.
For sink interface, connect - of 24 V DC external power supply.
For source interface, connect + of 24 V DC external power supply.
15 V DC power
supply
P15R CN1-1 This outputs 15 V DC to between P15R and LG. This is available as power
for TC, TLA, VC, or VLA. Permissible current: 30 mA
Control common LG CN1-3
CN1-28
CN1-30
CN1-34
CN3-1
CN3-7
CN6-1
This is a common terminal for TLA, TC, VC, VLA, FPA, FPB, OP ,MO1,
MO2, and P15R. Pins are connected internally.
Shield SD Plate Connect the external conductive portion of the shielded cable.
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