Siemens SINAMICS S210 - Power Unit: Internal Overtemperature Alarm; Power Unit: Hardware Current Limiting in Phase U

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Remedy: In general:

- check the line supply voltage at the input terminals.

- check the line supply voltage setting (p0210).

For booksize drive units, the following applies:

- wait (approx. 8 minutes) until the precharging resistors have cooled down. For this purpose, preferably disconnect the

infeed unit from the line supply.

For 5):

- carefully observe the permissible precharging frequency (refer to the appropriate Equipment Manual).

For 6):

- check the total capacitance of the DC link and reduce in accordance with the maximum permissible DC link capacitance

if necessary (refer to the appropriate Equipment Manual)

For 7):

- interconnect the ready-for-operation signal from the infeed unit (r0863.0) in the enable logic of the drives connected to

this DC link

For 8):

- check the connections of the external line contactor. The line contactor must be open during DC link fast discharge.

For 9):

- check the DC link for ground faults or short circuits.

For 11):

- check the DC link voltage of the infeed (r0070) and Motor Modules (r0070).

If the DC link voltage generated by the infeed (or external) is not displayed for the Motor Modules (r0070), then a fuse has

ruptured in the Motor Module.

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