9 Operation
9.8.3 Position Reference
9-54
(3) 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
150
Ω
∗
150
Ω
150
Ω
CN1
7
8
14
15
12
11
/PULS
SIGN
/SIGN
CLR
/CLR
PULS
150
Ω
∗
150
Ω
150
Ω
Example
When Vcc is +12V:
R1=1 k
Ω
When Vcc is +24V:
R1=2.2 k
Ω
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 equivalent
When Tr1 is OFF
Vcc
R1
i
R1
R1
i
i
SERVOPACK
Host controller
Photocoupler
Summary of Contents for SGLFW
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