YASKAWA Sigma-V Series User Manual page 126

(2) Installing the Battery in the Host Controller
Absolute encoder
∗1∗2
∗3
ENC
FG
∗1. The absolute encoder pin numbers for the connector wiring depend on the servomotors.
∗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.
: represents shielded twisted-pair wires.
∗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.
• 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
Multi-winding drive unit
Phase A
Phase B
CN21
Phase C
5
PS
6
/PS
Output line-driver
SN75ALS174
manufactured by Texas
Instruments or
the equivalent
CN1
3
BAT(+)
4
BAT(-)
1
PG5 V
2
PG0 V
Connector
shell
Connector
shell
Required Component Specifications
• Schottky Diode
Reverse Voltage: Vr ≥ 40 V
+
Forward Voltage: Vf ≤ 0.37 V
Battery
-
Reverse current: Ir ≤ 5 μA
Junction temperature: Tj ≥ 125°C
Host controller
∗3
CN1
33 PAO
34 /PAO
R
PBO
35
36 /PBO
R
19 PCO
20
/PCO R
1 SG
21
BAT (+)
+
(-)
22 BAT
-
Applicable line receiver: SN75ALS175 or
MC3486 manufactured by Texas
Instruments or the equivalent
Terminating resistance R: 220 to 470 Ω
• Resistor
Resistance: 22
Tolerance: ±5% max.
Rated power: 0.25 W min.
4.6 Absolute Encoders
MECHA
Phase A
Phase B
Phase C
0 V
∗4
Battery
Ω
4
4-35