4.5 I/O Signal Connections
4.5.3 I/O Signal Wiring Examples
4-35
Using a Linear Servomotor
*1. represents twisted-pair wires.
*2. The 24-VDC power supply is not provided by Yaskawa. Use a 24-VDC power supply with double insulation or
reinforced insulation.
*3. Always use line receivers to receive the output signals.
Note: If you use a 24-V brake, install a separate power supply for the 24-VDC power supply from other power sup-
plies, such as the one for the I/O signals of the CN1 connector.
If the power supply is shared, the I/O signals may malfunction.
Photocoupler outputs
Max. allowable voltage: 30 VDC
Max. allowable current: 50 mA DC
SERVOPACK
FG
Connect shield to connector shell.
Frame ground
Connector
shell
CN1
TH
5
Applicable Line Receiver:
SN75ALS175 or MC3486
manufactured by Texas
Instruments or the equivalent
/BK+
/BK-
/WARN+
/WARN-
/S-RDY+
ALM+
ALM-
1
2
23
24
3
4
+24VIN
+24 V
4.7 k
Ω
6
9
12
11
CCW-OT
CW-OT
/HOME
EXSTOP
8
/S-RDY-
CCW Drive Prohibit Input (prohibited when OFF)
Sequence Inputs
Signal Power Input
External Stop Input (OFF to stop)
Origin Signal Input (LS active when ON)
CW Drive Prohibit Input (prohibited when OFF)
Brake Output (released when ON)
Warning Output (ON for warning)
Servo Ready Output
This output is ON when the control power
supply and main circuit power supply are
ON and a servo alarm has not occurred.
Servo Alarm Output (OFF for alarm)
25
26
16
SG
*2
PBO
PCO
/PBO
PAO
/PAO
/PCO
21
17
18
19
20
22
Encoder
Output Pulse
Phase A
Encoder
Output Pulse
Phase B
Encoder
Output Pulse
Phase C
*3
*3
*3
Signal ground
*1
Overheat Protection Input