Siemens MICROMASTER 440 - Manual (Page 76)

7 Displays and messages Issue 10/06
MICROMASTER 440
76 Operating Instructions (Compact)
7 Displays and messages
7.1 LED status display
LEDs for indicating
the drive state
OFF
ON
approx. 0.3 s, flashing
approx. 1 s, twinkling
Mains not present Fault inverter temperature
Ready to run
Warning current limit
both LEDs twinkling same time
Inverter fault
other than the ones listed below Other warnings
both LEDs twinkling alternatively
Inverter running Undervoltage trip / undervoltage warning
Fault overcurrent Drive is not in ready state
Fault overvoltage
ROM failure
both LEDs flashing same time
Fault motor overtemperature
RAM failure
both LEDs flashing alternatively