Danfoss TTS400

Appendix C Compressor Test Sheet

Component Test Point Expected Value Verification Section
Measured
Value
BackplaneDCVoltage 0Vto24V 22to26VDC 4.25.2.2Backplane
Verification

 0Vto+15V 14.75to15.25
VDC
4.25.2.2Backplane
Verification

 0Vto-15V -14.75to-15.25
VDC
4.25.2.2Backplane
Verification

 0Vto+5V 4.75to5.25VDC 4.25.2.2Backplane
Verification

 HV-toHV+ 220to280VDC 4.25.2.2Backplane
Verification

 HV-to+17V 16.5to17.85
VDC
4.25.2.2Backplane
Verification

CavityTemperatureSensor
Resist
PositivetoNegative 10KΩ@77°F
(25°C)
4.31.3CavityTemperature
SensorVerification

DCBusTestHarness DCBus 462-853VDC 1.10DCBusTestHarness
InstallationandRemoval

 DCBusF 462-853VDC 1.10DCBusTestHarness
InstallationandRemoval

 15VAC 12–25VAC 1.10DCBusTestHarness
InstallationandRemoval

DC-DCResistance J1 openor>150kΩ 4.24.2.3InputResistance
Measurement

 J2 Chargingor
dischargingΩ
4.24.2.4OutputResistance
Measurement

 J3Potted(J4Open-Frame) Chargingor
dischargingΩ
4.24.2.4OutputResistance
Measurement

 J4Potted >1MΩ 4.24.2.4OutputResistance
Measurement

FrontBearingFeedthrough
Resistance
TTS300,TTS400C,E,F,&G/TGS230,&TGS390:1
to2
2.7to25Ω 4.29.3BearingVerification 
 TTS300,TTS400C,E,F,&G/TGS230,&TGS390:3
to4
2.7to25Ω 4.29.3BearingVerification 
 TTS350,TTS400P,TTS500,TTS700,TGS310,&
TGS520,TTH375,&TGH285:1to2
4.7to5.20Ω 4.29.3BearingVerification 
 TTS350,TTS400P,TTS500,TTS700,TGS310,&
TGS520,TTH375,&TGH285:3to4
4.7to5.20Ω 4.29.3BearingVerification 
FrontBearingSensor
FeedthroughResistance
5to2 2.0Ωto3.5Ω 4.30.3BearingSensor
Verification

 5to3 2.0Ωto3.5Ω 4.30.3BearingSensor
Verification

 6to7 2.0Ωto3.5Ω 4.30.3BearingSensor
Verification

 6to8 2.0Ωto3.5Ω 4.30.3BearingSensor
Verification

 1to4 2.0Ωto3.5Ω 4.30.3BearingSensor
Verification

 1to9 2.0Ωto3.5Ω 4.30.3BearingSensor
Verification

InverterDiode Phase1:+LeadonACOutputto-DCinput Open 4.22.2InverterVerification 
M-SV-001-EN Rev. H-1/23/2023 Page 287 of 294