YASKAWA E-V Series User Manual page 133

5 Operation
5.4.1 Basic Settings for Position Control Mode
(3) Connection Example
Applicable line driver: SN75ALS174 manufactured by Texas Instruments Inc., or MC3487 or equivalent
Line Driver Output
Host controller
Line driver
Forward
direction
Phase A
Reverse
direction
Phase B
∗
Open-collector Output
Set limit resistor R1 so the input current, i, falls between 7 mA to 15 mA.
Host controller
Tr1
∗
5-30
∗
PULS
PULS
/PULS
SIGN
SIGN
/SIGN
CLR
CLR
/CLR
FG
represents twisted-pair wires.
Vcc
R1
i
∗
PULS
/PULS
i
R1
SIGN
/SIGN
i
R1
CLR
/CLR
represents twisted-pair wires.
SERVOPACK
CN1
Photocoupler
7
150Ω
8
Photocoupler
11
150Ω
12
Photocoupler
15
150Ω
14
FG
SERVOPACK
CN1
Photocoupler
150Ω
7
8
150Ω
11
12
150Ω
15
14
Example
When Vcc is +24 V: R1 = 2.2 kΩ
When Vcc is +12 V: R1 = 1 kΩ
When Vcc is +5 V: R1 = 180 Ω
Note: In case of open-collector outputs,
the signal logic is as follows.
H level input or
When Tr1 is ON
equivalent
L level input or
When Tr1 is OFF
equivalent