Specifications

SED2 VFD Startup, Operation, and Maintenance Manual
38 Siemens Building Technologies, Inc.
Motor Cable Length
Maximum motor cable length is 164 ft (50m). Motor cable length is given
to ensure performance of only the SED2, not the suitability of the motor
when connected to a SED2 at this distance.
M
SED2
3. If needed, use
SBT-specified input line
reactors to ensure a good
impedance match with
your drive.
1. Never run control or drive input
wires in the same conduit as
the drive output wires.
4. If a disconnect is mounted on the
load side of your drive, it is desirable
to wire an auxiliary contact to the drive
that will disable drive operation when
the disconnect opens. (The wiring for
this contact must not be run in the same
conduit as the drive output wires).
5. Inverter duty motors are recommended.
Install motors within their guidelines. Use
dV/dT filters, output reactors, or other load
conditioners as applicable or as specified
by the motor manufacturer.
2. Keep the distance from the drive
to the motor as short as possible
to maximize motor life.
VFD0014R2
!
Figure 23. Motor Cable Installation Notes.
NOTE: If connecting multiple motors to one SED2, the total length of
the individual motor cables must not exceed the maximum
motor cable length.