YASKAWA SGD7S Product Manual page 106

4.3 Wiring the Power Supply to the SERVOPACK
4.3.4 Power Supply Wiring Diagrams
Using More Than One SERVOPACK
Connect the ALM (Servo Alarm) output for these SERVOPACKs in series to operate the alarm
detection relay (1RY).
When a SERVOPACK alarm is activated, the ALM output signal transistor turns OFF.
The following diagram shows the wiring to stop all of the Servomotors when there is an alarm
for any one SERVOPACK.
More than one SERVOPACK can share a single Noise Filter. However, always select a Noise Fil-
ter that has a large enough capacity to handle the total power supply capacity of all the
SERVOPACKs. Be sure to consider the load conditions.
Power supply
R S T
Servo power
1QF: Molded-case circuit breaker
1FLT: Noise Filter
2FLT: Noise Filter
3FLT: Noise Filter
4FLT: Noise Filter
1KM: Magnetic Contactor
2KM: Magnetic Contactor
4-22
1QF
3SA
2KM
Relay
terminal
(For servo alarm
display)
1Ry
Servo power
ON OFF
1KM
1KM
1SA
2KM
1KM 1Ry
2SA
(for control power supply)
(for main circuit power supply)
1KM
1FLT
Relay
terminal
1Ry: Relay
1PL: Indicator lamp
1SA: Surge Absorber
2SA: Surge Absorber
3SA: Surge Absorber
1D: Flywheel diode
L1
SERVOPACK
2FLT L2
L3
L1C
L2C
CN1
ALM+
3
4 ALM−
L1
SERVOPACK
L2
3FLT
L3
Relay
terminal
L1C
CN1
L2C
ALM+
3
4 ALM−
L1
SERVOPACK
L2
4FLT
L3
L1C
L2C
CN1
ALM+
3
4 ALM−
Servomotor
M
+24 V
1Ry
1D
Servomotor
M
Servomotor
M
0 V