YASKAWA SGDA series User Manual

3.2Setting User Constants According to Host Controller
69
3.2.2 Inputting Position Reference
1) Input a position reference by using the following input signal “reference pulse input.”
Since there are several specifications for input signal, select reference input for the sys-
tem to be created.
Inputs a move reference by pulse
input.
Position reference can correspond
to the following three types of out-
put form:
• Line driver output
• +12V Open collector output
• +5V Open collector output
Connection Example 1: Line Driver Output
Line Driver Used:
SN75174 manufactured by
Texas Instruments Inc., or
MC3487 or equivalent.
Connection Example 2: Open Collector Output
Sets the value of limiting re-
sistor R1 so that input cur-
rent i falls within the following
range:
Input Current i: 7 to 15 mA
Examples:
• When Vcc is 12 V,
R1 = 1 kΩ
• When Vcc is 5 V,
R1 = 180 Ω
Note The signal logic for open collector output is as follows.
When Tr1 is ON Equivalent to high level input
When Tr1 is OFF Equivalent to low level input
3
SGDA- P
Positions
Reference pulse
input
Reference sign
input
Error counter
clear input
Servopack
↕P: Represents twisted-pair cables
Host controller
Line driver
Servopack
Photocoupler
Host controller Servopack
Photocoupler
↕P: Represents twisted-pair cables
i

YASKAWA SGDA series Specifications

General

Brand	YASKAWA
Model	SGDA series
Category	Servo Drives
Language	English