User manual for the Danfoss Compact Inverter Tester that verifies inverter switching on TT & TG series compressors.
This manual provides safety instructions, setup procedures, and testing steps for the Danfoss Compact Inverter Tester used with TT & TG series centrifugal compressors. It explains the purpose of the tester, outlines the required equipment, and describes how to perform static inverter tests safely.
The document includes a diagram of the tester with component labels, detailed step‑by‑step testing instructions, result recording tables, and a list of acronyms. It also references the TurboTool® app for additional troubleshooting and spare‑part identification.
| Auxiliary power supply input voltage | 24 VDC |
|---|---|
| PWM signal generator frequency | ≈ 7 kHz |
| Minimum voltage drop‑off state | 150 VDC |
| Maximum forward voltage drop | < 600 mVDC |
The tester is used to verify the switching functionality of the inverter on Danfoss Turbocor TT/ TG compressors.
You should wait 20 minutes for the DC capacitors to dissipate all power.
Power must be isolated from the compressor in accordance with industry standards.