YASKAWA SGMJV User Manual page 142

(3) Connection Example
Applicable line driver: SN75ALS174 manufactured by Texas Instruments Inc., or MC3487 or equivalent
Line Driver Output
Host controller
Line driver
PULS
CW
Phase A
SIGN
CCW
Phase B
CLR
FG
∗
represents twisted-pair wires.
Open-collector Output
Set limit resistor R1 so the input current, i, falls between 7 mA to 15 mA.
Host controller
Vcc
R1
Tr1
R1
R1
FG
∗ represents twisted-pair wires.
SERVOPACK
CN1
∗
Photocoupler
PULS
7
150Ω
/PULS 8
Photocoupler
SIGN
11
150Ω
/SIGN
12
Photocoupler
CLR
15
150Ω
/CLR
14
FG
SERVOPACK
CN1
∗
i
Photocoupler
PULS 7
150Ω
/PULS 8
i
Photocoupler
SIGN
11
150Ω
/SIGN
12
i
Photocoupler
CLR 15
150Ω
/CLR 14
FG
• Use a shielded cable for I/O signals and ground both ends of the shield.
• Connect the shield at the SERVOPACK to the connector shell so that the shield will
be connected to the frame ground (FG) through the connector.
5.4 Operating Using Position Control with Pulse Train Reference
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.
When Tr1 is ON
When Tr1 is OFF
H level input or
equivalent
L level input or
equivalent
5
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