YASKAWA E-V Series User Manual page 39

3 Wiring and Connection
3.3.3 Typical Main Circuit Wiring Examples
 Precautions When Using More Than One SERVOPACK
This section shows an example of the wiring when more than one SERVOPACK is
used and the precautions.
• Wiring Example (Analog model)
The alarm output (ALM) terminals in each SERVOPACK individually operate differ-
ent alarm detection relays: 1Ry, 2Ry, and 3Ry respectively.
When the alarm occurs, the ALM output signal transistor is turned OFF.
R T
1QF
1FLT
Servo
power
supply
ON
1KM
1QF : Molded-case circuit breaker
1FLT : Noise filter
1KM : Magnetic contactor
(for main power supply)
1Ry : Relay
2Ry : Relay
3Ry : Relay
3-10
Insulated AC/DC
converter for main
circuit power supply
1KM
Insulated AC/DC
converter for control
circuit power supply
(For servo alarm display)
1Ry
1PL
2Ry
3Ry
Servo
power
supply
OFF
1Ry 2Ry 3Ry
1PL : Indicator lamp
1SA : Surge absorber
1D : Flywheel diode
2D : Flywheel diode
3D : Flywheel diode
In DC power input Σ-V Series SERVOPACKs, all ground terminals
for the four sequence output signals are named COM_SG. There-
fore, do not connect the ALM output signal of multiple SERVO-
PACKs in series.
Relay
terminal
Relay
terminal
Relay
terminal
Relay
terminal
1KM
1SA
CN3
SERVOPACK
L1
L2
CN1
C1
1Ry
8 ALM
C2
11 COM_SG 1D
0 V
CN3 SERVOPACK
L1
L2
CN1
C1
2Ry
ALM
8
C2
2D
11 COM_SG
0 V
CN3 SERVOPACK
L1
L2
CN1
C1
3Ry
ALM
8
C2
3D
COM_SG
11
0 V
Servomotor
M
+24 V
Servomotor
M
+24 V
Servomotor
M
+24 V