YASKAWA Sigma-V Series User Manual page 86

3 Wiring and Connection
3.10.6 Connections
 If the coil current of NC dynamic brake contactors is 300 mA or higher, obtain an NO relay
that can switch the contactor coil current and voltage and a power supply for the contactor
coil.
The following example shows connecting dynamic brake resistors for the SERVOPACK for one winding.
When connecting dynamic brake resistors for actual operation, refer to the following figure and connect resis-
tors for two windings.
3-40
SERVOPACK
CN1
47
45
DU
DV
DW
Power supply
for contactor coil
NO relay
CN115
24V
DB
DB24
DBON
0V
DB
For I/O
power supply
24V
Dynamic brake contactor
(Auxiliary contacts)
Dynamic brake resistor
Power supply
for contactor
Main circuit surge
coil
absorption unit
Coil surge
absorption unit
0V