Yaskawa A1000 6-Phase/12-Pulse Input - Manual (Page 34)

Thermal Relay
Trip Contact
Drive
CDBR dynamic
braking unit
Thermal Overload
Protector Trip Contact
1
2
P
3 4
3 + + 0
− − 0 B
+
−
Dynamic braking
resistor
Figure 19 Connecting a CDBR Dynamic Braking Unit and Dynamic Braking Resistor on Models 4T0088o to 4T0675o
Note: To install a CDBR dynamic braking unit to models 4T0058o and 4T0072o with built-in dynamic braking transistors, first connect terminal
B1 to the positive terminal on the CDBR dynamic braking unit, then wire the negative terminals on the drive and braking unit together.
Terminal B2 is not used.
6 Drive Options and Peripheral Devices
34 YASKAWA TOEP YAIA1U 02A YASKAWA AC Drive – A1000 6-Phase/12-Pulse Input Installation Manual