bonitron M3575R, Руководство для пользователей

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User’s Manual
9
2.
P
RODUCT DESCRIPTION
The need for resistive braking control occurs in applications where the frequency of an AC
motor at times exceeds that of the variable frequency drive controlling it. When this
happens, the motor acts as a generator. The energy produced in these circumstances
may cause the drive to trip on an over-voltage condition or cause the motor to build up
heat. This regenerated energy must either be dissipated or returned to the power line.
For applications where this condition occurs infrequently, dissipating the energy as heat
through resistive braking control can be the most cost-effective solution.
The Model M3575R series of braking products is designed to provide resistive loads for
braking control in applications utilizing a standard AC drive with a fixed DC bus. These
modules have been designed for use as remotely mounted resistive loads for voltage
controlled chopper modules such as the Model M3575T Series of Braking Control Modules
or other existing resistive braking circuitry.
2.1.
R
ELATED
D
OCS
The Model M3575T series of Resistive Braking Control modules is available in a
variety of ratings and configurations for use as voltage controlled chopper modules
with the M3575R Resistive Load modules or other resistive loads.
Contact the AC drive distributor for more information.
2.2.
P
ART
N
UMBER
B
REAKDOWN
Figure 2-1: Example of Part Number Breakdown
B
ASE
M
ODEL
N
UMBER
The Base Model Number of this unit ( M3575R ) indicates that the unit
incorporates the resistive load only. An external resistive braking transistor
module and its associated control circuitry are required for proper braking
function.
M3575R L 16 B F
C
OOLING
O
PTION
C
HASSIS
S
TYLE
H
ORSEPOWER
R
ATING
AC V
OLTAGE
R
ATING
B
ASE
M
ODEL
N
UMBER