Siemens SINAMICS G120 List Manual page 1110

Cu250s-2 control units

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4 Faults and alarms

4.2 List of faults and alarms

Also when interchanging the line and motor cables is identified as a motor-side short circuit.

The ground fault test only functions when the motor is stationary.

Connecting to a motor that is either not de-energized or partially de-energized is possibly detected as ground fault.

- check the motor-side converter connection for a phase-phase short-circuit.

- rule-out interchanged line and motor cables.

- check for a ground fault.

For a ground fault the following applies:

- do not enable the pulses when connecting to a rotating motor without the "Flying restart" function activated (p1200).

- increase the de-energization time (p0347).

- increase pulse suppression delay time (p1228) to ensure standstill.

- if required, deactivate the monitoring (p1901).

Drive: Power unit EEPROM without rated data

Message class:

Hardware/software error (1)

Acknowledge:

No rated data are stored in the power unit EEPROM.

See also: p0205 (Power unit application), r0206 (Rated power unit power), r0207 (Rated power unit current), r0208

(Rated power unit line supply voltage), r0209 (Power unit maximum current)

Replace the power unit or inform Siemens Customer Service.

External alarm 1

Message class:

External measured value / signal state outside the permissible range (16)

Acknowledge:

The condition for "External alarm 1" is satisfied.

The "External alarm 1" is initiated by a 1/0 edge via binector input p2112.