YASKAWA SGD7S-****20A Series Product Manual page 112

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 upply
R
ervo power
1QF: Molded-ca e circuit breaker
1FLT: Noi e Filter
2FLT: Noi e Filter
FLT: Noi e Filter
4FLT: Noi e Filter
1KM: Magnetic Contactor
2KM: Magnetic Contactor
4-22
T
1QF
A
2KM
Relay
terminal
(For ervo alarm
di play)
1Ry
ervo power
ON OFF
1KM
1KM
1 A
2KM
1KM 1Ry
2 A
(for control power upply)
(for main circuit power upply)
1KM
1FLT
Relay
terminal
1Ry: Relay
1PL: Indicator lamp
1 A: urge Ab orber
2 A: urge Ab orber
A: urge Ab orber
1D: Flywheel diode
L1
ERVOPACK
2FLT L2
L
L1C
L2C
CN1
ALM+
4 ALM−
L1
ERVOPACK
L2
FLT
L
Relay
terminal
L1C
CN1
L2C
ALM+
4 ALM−
L1
ERVOPACK
L2
4FLT
L
L1C
L2C
CN1
ALM+
4 ALM−
ervomotor
M
+24 V
1Ry
1D
ervomotor
M
ervomotor
M
0 V