4.9 IGV
The IGV assembly consists of movable vanes and a motor. The IGV assembly is a variable-angle guiding device that is
used to control capacity at low-load conditions. The IGV position can vary between 0 degrees (closed/perpendicular
to flow) and 90 degrees (open/parallel to flow). The vane angle is determined by the BMCC and controlled by the
Serial Driver. The Serial Driver uses +15VDC to control the IGV stepper motor.
Figure 4-41 IGV Assembly
4.9.1 IGV Connections
Refer to Figure 4-42 IGV Connections for the location of the IGV connections.
Figure 4-42 IGV Connections
Table 4-14 IGV Components
No.
Component
1
The IGV assembly is bolted to the compressor housing.
2
The compressor controller cable is held to the IGV Motor feedthrough by the cable clip.
3
The compressor controller cable continues on to the suction pressure/temperature sensor.
4
The suction pressure/temperature sensor is connected to the IGV Housing.
5
IGV Position Indicator.
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Summary of Contents for Turbocor TT Series
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