Siemens MICROMASTER 440 Series - Troubleshooting with the Status Display Panel

6 Troubleshooting International English
MICROMASTER 440 Operating instructions
68 6SE6400-5CA00-0BP0
Warnings
♦ 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.
♦ Disconnect the power supply before opening the equipment for access
6.1 Troubleshooting with the Status Display Panel
Table 6-1 explains the meaning of the various states of the LEDs on the Status
Display Panel (SDP).
Table 6-1 Inverter conditions indicated by the LEDs on the SDP
LEDs
Green Yellow
Priority
Display
Inverter Status Definitions
OFF OFF 1 Mains not present
OFF ON 8 Inverter fault – other than those listed below
ON OFF 13 Inverter running
ON ON 14 Ready to run – standby
OFF Flashing – R1 4 Fault – Overcurrent
Flashing – R1 OFF 5 Fault – Overvoltage
Flashing – R1 ON 7 Fault – Motor Overtemperature
ON Flashing – R1 8 Fault – Inverter Overtemperature
Flashing – R1 Flashing – R1 9 Warning Current Limit (both LEDs flashing at the
same time)
Flashing – R1 Flashing – R1 11 Other warning (both LEDs alternate flashing)
Flashing – R1 Flashing – R2 6/10 Undervoltage trip/Undervoltage warning
Flashing – R2 Flashing – R1 12 Inverter is not in ready state – display >0
Flashing – R2 Flashing – R2 2 ROM failure (both LEDs flashing at the same time)
Flashing – R2 Flashing – R2 3 RAM failure (both LEDs alternate flashing)
R1 – On time 900 milliseconds R2 – On time 300 milliseconds
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