Operating instructions i550 cabinet frequency inverter | 46
© 11/2021 · EN · www.Lenze.com
LED status
Meaning of the status LEDs for the inverter:
LED “RDY” (blue)) LED “ERR” (red)) State/meaning
o o No supply voltage
Mains voltage is switched on, inverter initialized
blinking
o Inverter disabled, ready for operation
blinking fast
Safe torque o (STO) active,
warning active
blinking
o Inverter disabled
blinking fast
Inverter disabled, warning active.
Inverter disabled, error active.
on briey every 1.5s
Inverter disabled, no DC bus voltage.
o Inverter enabled
o
The motor rotates according to the specied
setpoint or quick stop active.
blinking fast
Inverter enabled, warning active. The motor
rotates according to the specied setpoint or
quick stop active.
blinking
Inverter enabled, quick stop active as response
to a fault.
Troubleshooting
Error codes
LED statusError message
Support
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