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Figure 8-16
Type 1 Pre-charge Component Connections
Sequence of Operation
1. To start pre-charge,
DriveReadyToPrecharge_I
must be
true.
PrechargeStartEnable_O
is set true to start the sequence.
2. M2 is closed to begin resonance by connecting a capacitor in series with the
secondary,
PrechargeM2Close_I
is set equal to true.
3. When the input primary voltage reaches the max phase voltage set by the parameter
"Precharge voltage level" (2634), a damping resistor is connected through
M3.
PrechargeM3Close_I
is set equal to true.
4. The M3 acknowledge comes back,
PrechargeM3CloseAck_O
is set equal to true. M2
contactor is commanded to open,
PrechargeM2Close_I
is set equal to false.
5. The M2 acknowledge comes back,
PrechargeM2CloseAck_O
is set equal to true. M1
contactor is commanded to close,
PrechargeM1Close_I
is set equal to true.
Advanced Operating Functions
8.18 Pre-charge using SOP
Control Manual
Operating Manual, A5E50491925A
291
Summary of Contents for SINAMICS PERFECT HARMONY GH180
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