Siemens sinamics dcp Operating Instructions Manual page 241

1. Resistance precharging on both sides (recommended)
– Selection with p55350 = 3 (first side 1, then side 2) or 4 (first side 2, then side 1)
– The precharging contactor on the input side is closed.
– When the waiting time p55355[0] expires, the line contactor on the input side is
– There is a waiting period until the line contactor is closed (waiting time: p55356[0]).
– The precharging contactor on the input side is opened.
– The precharging contactor on the output side is closed.
– When the waiting time p55355[1] expires, the line contactor on the output side is
– There is a waiting period until the line contactor is closed (waiting time: p55356[1]).
– The precharging contactor on the output side is opened.
2. Resistance precharging on the output side (= side 2), step-up on input side
– Selection with p55350 = 2
– The precharging contactor on the output side is closed.
– When the waiting time p55355[1] expires, the line contactor on the output side is
– There is a waiting period until the line contactor is closed (waiting time: p55356[1]).
– The precharging contactor on the output side is opened.
– The SINAMICS DCP steps up the input to the target value (according to P55352).
– When the waiting time p55355[0] expires, the line contactor on the input side is
SINAMICS DCP
Operating Instructions, 05/2016, A5E34382853K
closed. The input capacitance of the SINAMICS DCP must have been charged up to
the input voltage before this time expires. A check is made to detect whether the
voltage fluctuates by less than the amount set in p55357[0]. If this is not the case, fault
message F60501 is output.
closed. The output capacity of the SINAMICS DCP must have been charged up to the
output voltage before this time expires. A check is made to detect whether the voltage
fluctuates by less than the amount set in p55357[1]. If this is not the case, fault
message F60501 is output.
closed. The output capacity of the SINAMICS DCP must have been charged up to the
output voltage before this time expires. A check is made to detect whether the voltage
fluctuates by less than the amount set in p55357[1]. If this is not the case, fault
message F60501 is output.
closed. The input capacitance of the SINAMICS DCP must have been charged up to
the input voltage before this time expires. A check is made to detect whether the
voltage fluctuates by less than the amount set in p55357[0]. If this is not the case, fault
message F60501 is output.
Note
The step-up of the input capacitance takes significantly longer than the resistance
precharging. Therefore, the setting p55355[1] >= 2000 ms is recommended in this
case.
Operation
8.10 Precharging of the DC links
241