42 • vacon
CABLING AND CONNECTIONS
6.2.3
Thermal supervision of ODU
ODU can also be equipped with a thermal supervision which will indicate if the filter
temperature has exceeded safe limits. Always refer to cabinet specific electrical drawings for
details.This NC contact is wired to the external fault input DIN3 by factory default.
NOTE! If the external fault input DIN3 is used for other purposes, make sure that the +ODU fan
supervision wiring is changed accordingly. It is also possible to connect the NC contact in series with
RUN or RUN ENABLE commands (see relevant application manual for more details).
6.2.4
DC supply and brake resistor cables
Vacon 6- and 12-pulse frequency converters can optionally be equipped with terminals for DC supply
and with an external brake resistor. These terminals are marked with B-, B+/R+ and R-. The DC bus
connection is made to terminals B– and B+ and the brake resistor connection to R+ and R– on the
converter module. The converter module terminals can also optionally be wired to customer
terminals in the cabinet.
Make sure that the converter is equipped with a brake chopper before connecting a
brake resistor.
Do not connect the brake resistor between the terminals B- and B+ as this will damage
the drive.
6.2.5
Control cable
For information on control cables see chapter 8.2. The control cables are routed down to the bottom
of the cabinet in the left inner side of the cabinet.
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