Using More Than One Servopack - YASKAWA SGDV User Manual

3 Wiring and Connection

3.1.6 Using More Than One SERVOPACK

3.1.6

Using More Than One SERVOPACK

This section shows an example of the wiring and the precautions when more than one SERVOPACK is used.
(1) Wiring Example
The alarm output (ALM) of each SERVOPACK operates a separate alarm detection relay (1Ry, 2Ry or 3Ry).
When the alarm occurs, the ALM output signal transistor is turned OFF.
R T
1 QF
1 FLT
Main power
supply ON
1 KM
1QF : Molded-case circuit breaker
1FLT : Noise filter
1KM : Magnetic contactor (for main circuit power supply)
1Ry : Relay
2Ry : Relay
3Ry : Relay
1PL : Indicator lamp
1SA : Surge absorber
1D : Flywheel diode
2D : Flywheel diode
3D : Flywheel diode
(2) Precautions
• Multiple SERVOPACKs can share a single molded-case circuit breaker (1QF) or noise filter. Always select
a molded-case circuit breaker or noise filter that has enough capacity for the total power supply capacity
(load conditions) of the SERVOPACKs.
• The same ground, COM_SG, is used for all four sequence output signals for a Σ-series SERVOPACK with a
DC power input. If the alarm outputs from the SERVOPACKs are connected in series, it will not be possible
to receive the output signals normally when an alarm occurs.
3-6
Non-isolated AC/DC converter
for main circuit power supply
1 KM
Non-isolated AC/DC converter
for control power supply
(For servo alarm display)
1 Ry
1 PL
2 Ry
3 Ry
Main power
supply OFF
1 Ry 2 Ry 3 Ry
Relay
terminal
Relay
terminal
Relay
terminal
Relay
terminal
1 KM
1 SA
Analog
CN 3
SERVOPACK
L 1
L 2
C 1
CN 1
1 Ry
8
C 2 ALM
1 D
11 COM _ SG
0 V
CN 3 SERVOPACK
L 1
L 2
C 1
CN 1
2 Ry
8
C 2 ALM
2 D
11 COM _ SG
0 V
CN 3
SERVOPACK
L 1
L 2
C 1
CN 1
3 Ry
8
C 2 ALM
3 D
11 COM _ SG
0 V
Servomotor
M
+ 24 V
Servomotor
M
+ 24 V
Servomotor
M
+ 24 V