Connecting An Incremental Encoder; Typical Example - YASKAWA SGM Series User Manual

4.4 Connecting an Incremental Encoder

4.4.1 Typical Example

From previous MECHATROLINK station
To next MECHATROLINK station
External latch signal
Zero point return deceleration LS
Reverse drive prohibited when N-LS is open
Forward drive prohibited when P-LS is open
1Ry turns OFF with Servo alarm
2Ry turns OFF with Servo ready
Note 1. Maximum capacity of each output circuit is 30 VDC and 50 mA.
2. Signal output line represents twisted-pair wires.
P
3. The 24 VDC power supply (I/O power supply) must be supplied by the user.
4. The power supply must be ON while the servo alarm (1Ry) remains OFF till the communication connection (CONNECT command)
is completed after the control power is turned ON.
5. SERVOPACK model SGDB-60 to -1E require a regenerative resistor (externally mounted option).
Three-phase 200 to 230 VAC
%, 50/60 Hz
+10
-15
T
R S
1MCCB
Noise filter eliminates external noise.
Noise filter
Main circuit
power supply
OFF
1MC
R
S
T
Must be grounded.
r
(Less than 100 Ω )
t
P1
Regenerative
Resistor Unit
B
S 2
P 1
*S
3
SH
7
S
6
P *S
8
SH
R 4
FG
5
End of last station
5
0V
+24V
+24V 6
P EXT
10
9
0V
DEC
N−OT
N−LS
8
P−OT
P−LS
7
1Ry
+24V ALM
3
P
4
ALM−SG
0V
2Ry
BK
1
2
BK−SG
Output capacity (Note 1)
Maximum operating voltage: 30 VDC
Maximum operating current: 50 mA
26
FG
Figure 4.1 Example: SGDB-jjjN SERVOPACK Connection to Motor and
Peripheral Device
Alarm processing
1Ry
PL
ON For power supply OPEN/CLOSED
1MC
Attach a surge suppressor to the
SUP
1MC 1Ry magnetic contactor and relays.
SERVOPACK
SGDB-jjjN
U
6.0 kW min.
V
W
4CN
Terminal
Must be grounded.
register
(Less than 100 Ω )
120Ω
2CN
1CN
3.3 kΩ
7 mA
External latch signal
Zero point return deceleration LS
Reverse drive prohibited
Forward drive prohibited
30 VDC
50 mA max.
Servo alarm
Brake interlock
4 -9
4.4 Connecting an Incremental Encoder
Servomotor
A
M
B
C
D
Incremental
PG
encoder
Correctly terminate the end of the shielded cable.
4