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Overview
Voltage Selection
Installation and Start-up Guide for NBRA-6xx
Chapter 3 – Voltage Selection and
This chapter contains braking chopper voltage selection instructions
and mechanical installation instructions. The voltage selection for the
NBRA-6xx is described on the first page of the chapter. The procedure
is the same for all the choppers. Mechanical installation instructions are
given separately for each chopper type starting from page 3-3.
Note: Drive Parameter 20.5 (20.7 for ACP 600) OVERVOLTAGE CTRL
must be set to OFF to enable chopper operation.
The voltage level must be selected before the braking chopper is
mounted. The voltage is set, according to the mains voltage, with a
jumper on the chopper control board. (The front cover of the chopper
has to be removed to access the jumper.)
CAUTION! Incorrect jumper setting or missing jumper may cause
braking chopper malfunctioning or damage to the chopper or resistor.
ACS 600 mains voltage
ACS 600 mains voltage
380 to 415 V
Figure 3-1 Braking chopper voltage selection.
Mechanical Installation
ACS 600 mains voltage
440 to 500 V
525 to 690 V
Chopper controlled by
another chopper (see
Figure 3-2)
3-1
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