Yaskawa LEGEND Digital Torque Amplifier - Manual (Page 55)

4.3 Encoder Signal Output
44
4.3 Encoder Signal Output
The output signal following division within the digital torque amplifier of the encoder output
1
can be output to an external device.
The output circuit is a line driver output. Connect in consideration of the following
circuit.
1. After Division: This means the output converted to the set pulse ratio based on the pulse data from the
encoder mounted on the motor. The unit here is “No. of Pulses/Rotation”.
PG
Digital Torque
Amplifier
CN2 CN1
Encoder
Upper-Level
Device
A-Phase
B-Phase
C-Phase
Serial Data
Division
Circuit
Digital Torque
Amplifier
Line Receiver
Upper-Level Device
A-Phase
PAO
*PAO
R
‚o
2
CN1-20
A-Phase
3
1 CN1-21
B-Phase
PBO
*PBO
R
‚o
6
CN1-22
B-Phase
5
7
CN1-23
C-Phase
PCO
*PCO
R
‚o
10
CN1-24
C-Phase
11
9 CN1-25
Choke
Coil
8 ‚b
OV
16
+5
V
+
-
Smoothing
Capacitor
0V
+5
V
CN1-1
Connector Shell
OV
Shield Wire
‚o: Shows a twisted pair wire. Applied Line Receiver: TI SN75175 or MC3486-
equivalent
R (Termination Resistance): 220~470Ħ
‚b (Decoupling Capacitor) : 0.1ƒÊF