Synchronisation Of Multiple Choppers - ABB NBRA-6 Series Installation And Startup Manual

Braking choppers
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Chapter 3 – Voltage Selection and Mechanical Installation
Synchronisation of
Multiple Choppers
3-2
The FIBER position is used if two (or more) choppers are connected to
the same intermediate circuit and must be synchronised. One chopper
– the first in the chain – acts as the master for the other choppers. The
voltage selection jumper of the master is set to the appropriate voltage,
while the slaves are set to FIBER.
V22
Master
Figure 3-2 Master/Slave connection of multiple choppers.
WARNING! Do not touch the printed circuits. They are extremely
sensitive to electrostatic discharge.
V23
V22
Slave
Installation and Start-up Guide for NBRA-6xx
V23
Slave

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