ABB ACS380 Hardware Manual page 164

164 BTAC-02 pulse encoder interface module
Wiring diagrams – Open emitter (sourcing) encoder output
Diagram assumes normal pulse order in Forward
rotation: Pulse A leads.
For encoders with pulse B leading, change the diagram:
• Wire encoder A and B to BTAC terminals B and A, respectively.
1
0V V
SCR
1)
1. Encoder
2. BTAC module
3. Encoder power supply
4. Three identical resistors
The resistor size depends on the encoder power supply V
V = 30 V
in
V = 24 V
in
V = 15 V
in
V = 5 V
in
1
2
0
CC
R = 2.7...3.0 kohm, 0.5 W
L
R = 1.8...2.2 kohm, 0.5 W
L
R = 1.0...1.5 kohm, 0.5 W
L
R = 390...470 ohm, 0.125 W
L
A
B
2
V
in
V
out
GND
2) R
L
A
A
GND
B
B
GND
Z
Z
GND
= VOUT:
in
3