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5 Operation
5.4.1 Basic Settings for Position Control
5-34
(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
∗
represents twisted-pair wires.
Open-collector Output
Set limit resistor R so the input current, i, falls between 7 mA to 15 mA.
∗
represents twisted-pair wires.
Line driver
SERVOPACK
Host controller
CN1
7
8
14
15
12
11
PULS
SIGN
CLR
/PULS
SIGN
/SIGN
CLR
/CLR
PULS
CW
Phase A
CCW
Phase B
∗
150
Ω
4.7 k
Ω
Photocoupler
150
Ω
4.7 k
Ω
Photocoupler
150
Ω
4.7 k
Ω
Photocoupler
FG
FG
Analog
• 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.
CN1
7
8
14
15
12
11
/PULS
SIGN
/SIGN
CLR
/CLR
PULS
∗
150
Ω
4.7 k
Ω
4.7 k
Ω
4.7 k
Ω
150
Ω
150
Ω
FG FG
Vcc
Vcc
Vcc
Tr
Tr
Tr
R
R
i
i
i
R
SERVOPACK
Host controller
Example
When Vcc is +12 V: R = 1 k
Ω
When Vcc is +24 V: R = 2.2 k
Ω
When Vcc is +5 V: R = 180
Ω
Note: In case of open-collector outputs,
the signal logic is as follows.
When Tr is ON
High level input or
equivalent
Low level input or
equivalent
When Tr is OFF
Photocoupler
Photocoupler
Photocoupler
Analog