Danfoss Turbocor TTS Series User Manual

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M-SV-001-EN Rev. G
The Backplane provides the PWM with +5VDC with respect to 0VDC, along with +17VDC and HV+ (at
250VDC) both with respect to HV-.
Figure 4-279 Bearing Control Signal Flow
4.29.2 PWM Connections
J1 on the Backplane is the PWM connection port. The PWM heat sink is secured with fasteners to the
compressor housing below the Backplane.
The 6-pin/wire connects to the rear (left) bearing power feed through. The 4-pin/wire connects to the
front (right) bearing power feed through. Refer to "Figure 4-280 Bearing Power Feed Throughs and
PWM Connection Port" for an illustration of a Major Revision "F" and later compressor.
Figure 4-280 Bearing Power Feed Throughs and PWM Connection Port
Impellers
Z‐axis
Position
Sensor
SensorRing
Front
Radial
Bearing
Motor
SensorRing
Rear
Radial
Bearing
Axial
Bearing
X‐axis
Position
Sensor
X‐axis
Position
Sensor
Touchdown
Bearings
Touchdown
Bearings
Target
Sleeve
Y‐axis
Position
Sensor
Y‐axis
Position
Sensor
Channels
Fx,Fy
Channels
Rx,Ry
ChannelAxi
250VDC
PositionCommand
Signals
Bearing‐Motor‐
Compressor
Controller(BMCC)
Bearing
PWM
Amplifier
PositionFeedbackPositionFeedback
Axis Be aring Chann el
X FrontRadial Fx
Y FrontRadial Fy
X RearRadial Rx
Y RearRadial Ry
Z Axi al Axi
ChannelAssignments
Shaftaxesmonitored
bypositionsensors
Y
X
Z
Shaft
Rear Radial and
Axial Bearing Power
Feedthrough
Front Radial Bearing
Power Feedthrough

Danfoss Turbocor TTS Series Specifications

General

Brand	Danfoss
Model	Turbocor TTS Series
Category	Compressor
Language	English