Yaskawa Sigma II Series Servo System - Manual (Page 207)

Sigma II User’s Manual Chapter 5: Parameter Settings and Functions
5-121
5.8.3 Using More Than One Servodrive
The following diagram is an example of the wiring when more than one servodrive
is used.
Note: Wire the system to comply to National Electrical Code.
Connect the alarm output (ALM) terminals for the three servo amplifiers in series to
enable alarm detection relay 1RY to operate. The output transistor is turned OFF
when the ALM output signal enters an alarm state.
Multiple servos can share a single MCCB or noise filter. Always select an MCCB or
noise filter that has enough capacity for the total power capacity (load conditions) of
SGDH
Servo
amplifier
L1
L2
L3
L1C
L2C
CN1
31 ALM+
32 ALM-
M
SGDH
Servo
amplifier
L1
L2
L3
L1C
L2C
CN1
31 ALM+
32 ALM-
M
Fuse
SGDH
Servo
amplifier
L1
L2
L3
L1C
L2C
CN1
31 ALM+
32 ALM-
M
+24V 1RY
1MC
1MC
1MC 1RY
Power
Power
Supply
OFF
Supply
ON
Fuse
Fuse
SUP
Noise filter
MCCB
Power supply
R S T
Fuse
0V