YASKAWA Sigma-V Series User Manual page 76

3 Wiring and Connection
3.8.2 Encoder Connection Examples
(2) Absolute Encoder
Absolute encoder
ENC
∗1. The pin arrangement for wiring connectors varies in accordance with the servomotor that is used.
∗2. To prevent the influence of external noise, we recommend you connect a ferrite core on the motor end of the encoder
cable using two turns.
∗3.
∗4. When using an absolute encoder, provide power by installing an encoder cable with a JUSP-BA01-E Battery Case or
install a battery on the host controller.
3-30
∗1 ∗2
∗3
PS
/PS
BAT(+)
BAT(-)
PG5 V
PG0 V
FG
: represents shielded twisted-pair wires.
• When Installing a Battery on the Encoder Cable
Use the encoder cable with a battery case that is specified by Yaskawa.
Refer to the multi-winding drive system catalog for details.
• When Installing a Battery on the Host Controller
Insert a diode near the battery to prevent reverse current flow.
Circuit Example
+
Battery
-
Multi-winding drive unit
CN1
Phase A
33
34
/PAO
Phase B
35
36 /PBO
Phase C
19
CN21
20
/PCO
5
6
Output line-driver SN75ALS174
manufactured by Texas
Instruments or the equivalent
SG
1
CN1
21
3 BAT
4 22 BAT
1
2
Connector
shell
Connector
Applicable line receiver: SN75ALS175 or MC3486
shell
R (terminating resistance): 220 to 470 Ω
Required Component Specifications
• Schottky Diode
Reverse Voltage: Vr ≥ 40 V
Forward Voltage: Vf ≤ 0.37 V
Reverse current: Ir ≤ 5 μA
Junction temperature: Tj ≥ 125°C
Host controller
∗3
PAO
R
PBO
R
PCO
R
0 V
(+)
+
(-) Battery
-
manufactured by Texas
Instruments, or the equivalent
• Resistor
Ω
Resistance: 22
Tolerance: ±5% max.
Rated power: 0.25 W min.
MECHA
Phase A
Phase B
Phase C
∗4