Installation Standards - YASKAWA Sigma-V Series User Manual

• 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, and connect them as shown below.
SERVOPACK
24V
DB
0V
4.6.3

Installation Standards

Observe the following installation standards when you use a Yaskawa dynamic brake
unit. Provide at least 70 mm on each side of the unit and at least 200 mm at both the
top and bottom of the unit to enable fan and natural convection cooling.
70 min.
4.6 Selecting and Connecting a Dynamic Brake Unit
CN1
47
45
DU
DV
DW
Power supply
for contactor coil
NO relay
CN115
DB24
Power supply
DBON
for contactor
coil
DB
Up
Mounting
direction
70 min.
For I/O
power supply
24V 0V
Dynamic brake contactor
(Auxiliary contacts)
Dynamic brake resistor
Main circuit surge
absorption unit
Coil surge
absorption unit
Units: mm
4-29