External Brake Unit and Resistor Wiring
The following illustrates how to wire an External Brake Unit (with Resistor/s) or Resistor/s (Without External Break Unit) to a VSD:
The following describes how to wire each of the 2 possible scenarios:
External Brake Unit with Resistor (for 30kW VSDs and larger)
- Connect the External Brake Unit P+ Terminal to the VSD P+ Terminal and External Brake Unit P- Terminal to the VSD P- Terminal.
- Refer to the Brake Unit Manual for more details HERE.
Brake Resistor without Break Unit (for VSDs up to 22kW)
- Connect the Resistor Terminals to the VSD P+ and PB Terminals.
* Please Note:
- When using a braking resistor or brake unit, please set parameter A2-05 = 0 (if it is not set = 0 it may cause deceleration time extension problems).
- When using a braking resistor or brake unit for a Crane/Hoist/Lift/Winch Application, please see the Crane/Hoist/Lift/Winch Setup Excel file (available for download) which provides an example of all the various parameters to be set and the applicable values to be used.
- Please install the Brake Unit and/or Resistor/s external from the VSD due to heat generated by the resistors.
