YASKAWA SGDV User Manual page 85

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 pulse model)
Connect the alarm output (ALM) terminals for the three SERVOPACKs in series to
enable alarm detection relay 1RY to operate.
When the alarm occurs, the ALM output signal transistor is turned OFF.
Power supply
R S T
1QF
3SA
1FIL
2KM
(For servo alarm
display)
1Ry
Servo power Servo power
supply ON supply OFF
1KM
1KM 1Ry
1QF: Molded-case circuit breaker
1FIL:
Noise filter
1KM: Magnetic contactor
(for control power supply)
2KM: Magnetic contactor
(for main power supply)
1Ry: Relay
1PL: Indicator lamp
Surge absorber
1SA:
2SA: Surge absorber
3SA: Surge absorber
1D: Flywheel diode
1KM
Relay
terminal
1KM
1SA
2KM
Relay
terminal
2SA
L1
SERVOPACK
L2
L3
Relay
terminal
L1C
L2C
ALM+
-
ALM
L1
SERVOPACK
L2
L3
Relay
terminal
L1C
L2C
ALM+
-
ALM
L1
SERVOPACK
L2
L3
L1C
L2C
ALM+
-
ALM
3.3 Main Circuit Wiring
Servomotor
M
+24 V
CN1
1Ry
31
32
ID
Servomotor
M
CN1
31
32
Servomotor
M
CN1
31
32
0 V
3
3-27