Danfoss Turbocor Twin-Turbine TTS Series, Applications And Installation Manual

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M-AP-001-EN Rev. Q
12.6 Compressor Electronics
The compressor shall include a microprocessor controller capable of controlling magnetic bearings
and speed control. The controller shall be capable of providing monitoring, including commissioning
assistance, energy outputs, operation trends, and fault codes via a Modbus interface.
12.6.1 Ancillary Devices
A check valve shall be installed on the discharge port of all compressors to protect against backflow of
refrigerant during coast down. It is recommended that the valve be located after the properly designed
discharge cone adaptor; preferably close to the condenser in the packaged system. The system must
include an appropriately sized 5% impedance Line Reactor. One Line Reactor is required for each
compressor and cannot be shared among multiple compressors. Please refer to the
Spare Parts Selection
Guide .