133 of 165
M-SV-VT-001-EN Rev. A
Variable Frequency Drive Components
4.1 VFD Modules
There are three (3) VTT VFD Modules specically designed and programmed to operate with the VTT
Compressor Module and cannot be replaced by a generic drive. The following VFDs are designed to be
used with the VTT Compressor Module:
• N165
• N232
• N262
For detailed VFD information, refer to the VFD Service Manual.
Figure 170 - VFD
A VFD is an electronic motor controller that converts DC into a variable AC waveform output. The
frequency and voltage of the output are regulated to control the motor speed or torque. The VFD can
vary the speed of the motor in response to commands from the CCM.
4.2 VFD Control Card The VFD Control Card contains most of the logic section. The primary logic element of the VFD Control
Card is a microprocessor, which supervises and controls all functions of frequency converter operation.
To Next Page
Loading...
