8.6 Operating Using Position Control
8-55
8
(2) Connection Example
(a) Connection Example for Line-driver Output
Applicable line driver: SN75174 manufactured by Texas Instruments Inc., or MC3487 or equivalent
* : Represents twisted-pair wires.
(b) Connection Example for Open-collector Output
Select the limit resistance R1 value so that the input current i will be within 7 to 15 mA.
* : Represents twisted-pair wires.
Line
driver
SERVOPACK
Host controller
Photocoupler
CN1
7
8
14
15
12
11
/PULS
SIGN
/SIGN
CLR
/CLR
PULS
∗
150Ω
150Ω
150Ω
CN1
7
8
14
15
12
11
/PULS
SIGN
/SIGN
CLR
/CLR
PULS
∗
Example
When Vcc is +12V: R1=1 kΩ
When Vcc is +24V: R1=2.2 kΩ
When Vcc is +5V: R1=180 Ω
Note: When the open-collector output is used,
the signal logic is as follows:
When Tr1 is ON High level input or equivalent
Low level input or equivalentWhen Tr1 is OFF
Vcc
R1
i
R1
R1
i
i
SERVOPACK
Host controller
Photocoupler
150Ω
150Ω
150Ω
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