Danfoss VLT AutomationDrive FC 301 Series Design Manual page 169

Options and Accessories
Figure 11.7 Permanent Magnet (PM) Motor with Resolver as
Speed Feedback
Set-up example
In this example, a permanent magnet (PM) motor is used
with resolver as speed feedback. A PM motor must usually
operate in flux mode.
Wiring
The max cable length is 500 ft [150 m] when a twisted-pair
cable is used.
NOTICE!
Resolver cables must be shielded and separated from the
motor cables.
NOTICE!
The shield of the resolver cable must be correctly
connected to the de-coupling plate and connected to
chassis (ground) on the motor side.
NOTICE!
Always use shielded motor cables and brake chopper
cables.
MG33BF22
Design Guide
Rev. 2014-04-04 All rights reserved.
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