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Wiring
Wiring
The adjustable frequency drive generates a
Installation
carrier frequency with a pulse frequency
between 3 kHz and 14 kHz. This results in
radiated frequency noise from the motor
cables. It is very important that the LonWorks
cable be isolated as much as possible from
the drive output cabling to the motor. Use
shielded wire rather than twisted-pair. Do not
run LonWorks cabling and motor cables in
parallel or in close proximity to one another.
Ensure that the drive is properly grounded.
The following section describes the installation
Card
procedures for the LonWorks option card (see
Installation
following illustration). For additional information
on installation and operation of the VLT
adjustable frequency drive, refer to the VLT
Instruction Manual .
Tools
Flat-head screw driver
Torx T-10 screw driver
Required
Torx T-20 screw driver
10
DANGER
!
VLT adjustable frequency drive
contains dangerous voltages
when connected to line power.
After disconnecting from line,
wait at least 14 minutes before
touching any electrical com-
ponents.
WARNING
!
Only a competent electrician
should carry out electrical
installation. Improper installation
of motor or VLT can cause
equipment failure, serious injury
or death. Follow this manual,
National Electrical Code (USA)
and local safety codes.
VLT
®
5000 / VLT
®
6000 HVAC / VLT
CAUTION
!
Electronic components of VLT
adjustable frequency drives are
sensitive to electrostatic dis-
charge (ESD). ESD can reduce
performance or destroy sensitive
electronic components. Follow
proper ESD procedures during
installation or servicing to
prevent damage.
CAUTION
!
It is responsibility of user or
installer of VLT adjustable
frequency drive to provide proper
grounding and motor overload
and branch protection according
to National Electrical Code (USA)
and local codes.
MG.60.N2.02 - VLT is a registered Danfoss trademark
®
8000 AQUA
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