YASKAWA Sigma II Series User Manual

8 Operation
8.4.1 Interface Circuits
8-30
8.4.1 Interface Circuits
The following diagram shows the standard connections for a an absolute encoder mounted to a servomotor. The
connection cables and wiring pin numbers depend on the servomotor. For details, refer to chapter 5 Specifica-
tions and Dimensional Drawings of Cables and Peripheral Devices.
• SEN Signal Connection
Host controller
Battery
SERVOPACK
Encoder
Serial interface
circuit
Line driver
Edge
detection
Up/down
counter
Clear
Shield (shell)
Connector
shell
Applicable line receiver:
Texas Instruments's SN75175 or KM3486
Terminating resistance R: 220 to 470 Ω
R
PG5V
PG0V
BA
PS
/PS
T (+)
BAT ( - )
BAT(-)
PCO
/PCO
PBO
/PBO
PAO
/PAO
BAT(+)
SEN
SG
R
R
PA
PB
PC
PS
+5V
7406
0V
+
-
4
2
21
22
33
34
35
36
19
1
20
CN1
1
2
3
4
6
5
CN2
UP
DOWN
SG
0V
㧦Represents twisted-pair wires.
For wiring pin numbers, refer to chapter 5
Specifications and Dimensional Drawings of
Cables and Peripheral Devices
R
PSO
/PSO
48
49
PG
∗1㧚
∗2㧚
∗1∗1
∗2
Serial interface
circuit
Type Name Connector
Pin Number
Setting Meaning
Input SEN CN1-4 OFF (low level) Input when power is turned ON
ON (high level) Input at absolute data request
• This input signal is required to output absolute data
from the SERVOPACK.
• When the SERVOPACK main circuit power supply
turns OFF, input the SEN signal at a low level.
• Let at least three seconds elapse after turning ON the
power before changing the SEN signal to high level.
• When the SEN signal changes from low level to high
level, the multiturn data and initial incremental
pulses are output.
Until these operations have been completed, the ser-
vomotor cannot be turned ON regardless of the status
of the servo ON signal (/S-ON).
• The panel operator display will also remain “b.b”.
Refer to 8.4.6 Absolute Encoder Reception Sequence.
 IMPORTANT
1. Maintain the high level for at least 1.3 seconds when the
SEN signal is turned OFF and then ON, as shown in the fig-
ure on the right.
2. When the SERVOPACK main circuit power supply turns
OFF, input the SEN signal at a low level.
4.7 k
SEN
4
CN1
SG
2
+5V
0V
100 Ω
Ω
0V
0.1 μ(
Host controller
SERVOPACK
High level:
About 1 mA
7406
or equivalent
We recommend a PNP transistor.
Signal levels
High: 4.0 V min.㧘Low: 0.8 V max.
OFF ON (high level)
1.3 s min.
OFF ON
15 ms min.
SEN signal

YASKAWA Sigma II Series Specifications

General

Brand	YASKAWA
Model	Sigma II Series
Category	Controller
Language	English