10
M
in
100
[m
m]
M
in
100
[m
m
]
Figure 3.1
DB unit cooling space
3.2 Connection
A maximum of six sets of parallel runs are possible for VFDB2009 series dynamic brake system. Please
keep in mind that control wiring differs in single operation and parallel operation. Moreover, it is necessary
to change a setup of DB unit in accordance with wiring. refer to "5.2.2 Set-up of single operation or
Master/Slave system paralle operation" for change of a setup. In addition, a parallel operation with
VFDB2002 series is also possible for this VFDB2009 series. Refer to "8.3.2 connection method" for the wiring
at the time of a parallel run with VFDB2002 series.
The parallel operation of DB unit of our company has adopted
“
Master &
Slave system.”
“Master
& Slave
s
ystem” sets to Master DB
unit which each DB unit performed DB operation detection and carried out DB
operation detection previously, and takes out instructions of ON/OFF of switching device (IGBT) to other
parallel units. Figure 3.3 shows the connection method and the wiring between each DB unit becomes the
same.
DB unit set up by Master unit performs DB operation detection, and "Master & Slave system" of VFDB2002
series takes out instructions of ON-OFF of switching device (IGBT) of a slave unit. Even when VFDB2009
series DBunit is applied, "Master & Slave system" of VFDB2002 series is possible. Refer to Figure 8.1 for the
connection method in that case
.
In accordance with the power supply voltage system of an inverter, a DB unit setup is required before use.
When DB unit is used by mistaken setup, there is fear of breakage and unusual operation. Refer to "5.2.1.
Change of a power supply voltage" and "5.4.3 F20 (Power supply voltage selection and Master/Slave
selection and Station number set-up mode) for a setup of a power supply voltage system.
Summary of Contents for VFDB2009 Series
Page 1: ...VFDB2009 Operation Manual...
