YASKAWA Sigma-V Series User Manual page 155

5 Operation
5.4.1 Basic Settings for Position Control
(3) Connection Example
The following diagram shows a connection example. Use an SN75ALS174 or MC3487 manufactured by
Texas Instruments Inc., or equivalent for the line driver.
Line Driver Output
Host controller
Line driver
Phase A
Phase B
∗
Open-collector Output
Set limit resistor R so the input current, i, falls between 7 mA to 15 mA.
Host controller
∗
5-34
∗
PULS
PULS
CW
/PULS
SIGN
CCW
/SIGN
CLR
FG
represents twisted-pair wires.
Vcc
∗
R
i
PULS
/PULS
Vcc
Tr
R
i
SIGN
/SIGN
Vcc
Tr
R
i
CLR
/CLR
Tr
FG
represents twisted-pair wires.
• Use a shielded cable for I/O signals and ground both ends of the shield.
• Connect the shield of the cable on the SERVOPACK side to the connector shell so
that the shield will be connected to the frame ground (FG) through the connector.
SERVOPACK
CN1
Photocoupler
7
150 Ω
8
Photocoupler
SIGN
11
150 Ω
12
Photocoupler
CLR
15
150 Ω
/CLR
14
FG
SERVOPACK
CN1
Photocoupler
150 Ω
7
8
150 Ω
Photocoupler
11
12
150 Ω
Photocoupler
15
14
FG
Analog
Analog
Example
When Vcc is +24 V: R = 2.2 kΩ
When Vcc is +12 V: R = 1 kΩ
When Vcc is +5 V: R = 180 Ω
Note: In case of open-collector outputs,
the signal logic is as follows.
High level input or
When Tr is ON
equivalent
Low level input or
When Tr is OFF
equivalent