Danfoss Turbocor TTS Series

36 of 282 M-SV-001-EN Rev. G
Figure 2-6 Compressor Energy and Signal Flow Connections
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3-phase Voltage Input
Terminal
+
+
-
-
-
-
-
+
+
+
8
7
1
6
5
3
Soft Start AC/DC Input
Voltage; DC Output Voltage
to DC-DC Converter
Soft Start AC Output Voltage to
DC-DC Converter
(+) (-)
DC BUS
AC voltage enters the SCRs and
DC voltage powers the DC bus
2
DC bus voltage from the SCRs
charges the capacitors
Soft Start limits the in-rush
current at power-up by
controlling the SCR gates
DC bus provides
DC voltage to the
Inverter
Inverter DC Bus connection
Ground
Backplane supplies low
DC voltage to service side
components
Inverter connection
DC-DC converts DC bus voltage
to provide 24 VDC and 250 VDC
to backplane
4
Inverter converts DC bus
voltage into 3-phase
simulated AC voltage to the
stator
TTS300 Shown