Siemens 420 manual Troubleshooting with the SDP, Troubleshooting Issue 07/04

4 Troubleshooting Issue 07/04

WARNING

♦Repairs on equipment may only be carried out by Siemens Service, by repair centers authorized by Siemens or by qualified personnel who are thoroughly acquainted with all the warnings and operating procedures contained in this manual.

♦Any defective parts or components must be replaced using parts contained in the relevant spare parts list.

4.1Troubleshooting with the SDP

Table 4-1 explains the meaning of the various states of the LEDs on the SDP.

LEDs for indicating the drive state

Off

On

approx. 0,3 s, flashing approx. 1 s, twinkling

Table 4-1 Inverter conditions indicated by the LEDs on the SDP

Mains not present

Ready to run

Inverter fault - other than the ones listed below

Inverter running

Fault overcurrent

Fault overvoltage

Fault motor overtemperature

Fault inverter temperature

Warning current limit - both LEDs twinkling same time

Other warnings - both LEDs twinkling alternatively

Undervoltage trip / undervoltage warning

Drive is not in ready state

ROM failure - Both LEDs flashing same time

RAM failure - Both LEDs flashing alternatively

MICROMASTER 420	Operating Instructions
152	6SE6400-5AA00-0BP0