Yaskawa SGDB - Manual (Page 86)

APPLICATIONS OF Σ-SERIES PRODUCTS
3.2.3 Using Encoder Outputs
74
The output circuit is for line driver output. Connect each signal line according to the fol-
lowing circuit diagram.
SGDB
SERVOPACK
Host controller
Line receiver
Choke
coil
Smoothing
capacitor
Line receiver used: SN75175 manufactured by Texas
Instruments Inc. or MC3486 (or
equivalent)
R (termination resistor): 220 to 470 Ω
C (decoupling capacitor): 0.1 μF
↕P: Represents twisted-pair cables
Phase A
Phase B
Phase C
Phase A
Phase B
Phase C
1CN-33
1CN-34
1CN-35
1CN-36
1CN-19
1CN-20
1CN-1
1CN-50
/PAO
/PBO
/PCO
J I/O Signals
I/O signals are described below.
Output → PAO 1CN-33 Encoder Output
Phase-A
For Speed/Torque Control
and Position Control
Output → /PAO 1CN-34 Encoder Output
Phase-/A
For Speed/Torque Control
and Position Control
Output → PBO 1CN-35 Encoder Output
Phase-B
For Speed/Torque Control
and Position Control
Output → /PBO 1CN-36
Encoder Output
Phase-/B
For Speed/Torque Control
and Position Control
Output → PCO 1CN-19 Encoder Output
Phase-C
For Speed/Torque Control
and Position Control
Output → /PCO 1CN-20
Encoder Output
Phase-/C
For Speed/Torque Control
and Position Control
Divided encoder signals are output.
Always connect these signal terminals when a position loop is formed in the host control-
ler to perform position control.
Set a dividing ratio in the following parameter.
Dividing ratio setting Cn-0A PGRAT
The dividing ratio setting is not relevant to the gear ratio setting (Cn-24, 25) for the elec-
tronic gear function of the SERVOPACK when used for position control.
3