Danfoss TTS400

4.16.2.2 Soft Start SCR Gate Cable Installation
1. ConnecttheSCRGateCabletotheSoftStart.
a. ForcompressorswiththeClosed-TopSoftStart,installtheJ8connector.

o
Besuretoalignthepinsproperlysoasnottobendthemormisaligntheplug.Theflat
portionoftheconnectorgoestothetop.RefertoFigure4-123Closed-TopSoftStartJ8
ConnectorTop.
Figure 4-123 Closed-Top Soft Start J8 Connector Top
b. ForcompressorswiththeOpen-TopSoftStart,installtheJ2connector.
Figure 4-124 Open-Top Soft Start J2 Connector
2. OncetheCableHarnesshasbeeninstalledontotheSoftStart,thecableshouldberoutedtowardthe
SCRs.SCRGateconnectorsmustbeinstalledincorrectorderforpropercompressoroperation.
3. PlugeachpigtailintoitsrespectiveSCRmakingsureyoulineupthe“key”onthepigtailconnectorto
the“key”oftheSCRitself.Thismayrequiretheuseofsmallforcepsorneedlenosepliers.Referto
Figure4-125SCRGateConnectorAlignmentonpage131forthetwo(2)differentstylesofSCRs.

Page 130 of 294 - M-SV-001-EN Rev. H 1/23/2023