Precautions When Using More Than One Servopack - YASKAWA E-V Series User Manual

3.1.7 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.
(1) Wiring Example
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
FIL
2KM
(For servo alarm
1Ry
Servo power Servo power
supply ON supply OFF
1KM
1KM 1Ry
1QF: Molded-case circuit breaker
FIL:
Noise filter
1KM: Magnetic contactor
(for control power supply)
2KM: Magnetic contactor
(for main power supply)
Relay
1Ry:
1PL: Indicator lamp
Surge absorber
1SA:
2SA: Surge absorber
3SA: Surge absorber
1D: Flywheel diode
(2) Precautions
Multiple servos can share a single molded-case circuit breaker (1QF) or noise filter. Always select a QF or
noise filter that has enough capacity for the total power capacity (load conditions) of those servos.
1KM
Relay
terminal
display)
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
3.1 Main Circuit Wiring
Servomotor
M
+24V
CN1
1Ry
3
4
ID
Servomotor
M
CN1
3
4
Servomotor
M
CN1
3
4
0V
3-15
3