Name: Danfoss VLT Micro Drive FC 51 Series
Brand: Danfoss
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5.6.4 Explanation of the Status Bits

Bit 00, Control not ready/ready:

Bit 00 = “0” means that the frequency converter has tripped.

Bit 00 = “1” means that the frequency converter controls are ready, but that the power component is not necessarily receiving any power supply (in case

of external 24 V supply to controls).

Bit 01, Frequency converter ready:

Bit 01 = “1”. The frequency converter is ready for operation, but there is an active coasting command via the digital inputs or via serial communication.

Bit 02, Coasting stop:

Bit 02 = “0”. The frequency converter released the motor.

Bit 02 = “1”. The frequency converter can start the motor when a start command is given.

Bit 03, No error/trip:

Bit 03 = “0” means that the frequency converter is not in fault mode.

Bit 03 = “1” means that the frequency converter is tripped, and that a reset signal is required to re-establish operation.

Bit 04, No error/error (trip):

Bit 04 = “0” means that the frequency converter is not in fault mode.

Bit 04 = “1” means that there is a frequency converter error but no trip.

Bit 05:

Not used.

Bit 06, No error/trip lock:

Bit 06 = “0” means that the frequency converter is not in fault mode.

Bit 06 = “1” means that the frequency converter is tripped and locked.

Bit 07, No warning/warning:

Bit 07 = “0” means that there are no warnings.

Bit 07 = “1” means that a warning has occurred.

Bit 08, Speed ≠ reference/speed = reference:

Bit 08 = “0” means that the motor is running, but that the present speed is different from the preset speed reference. For example, this might occur

while the speed is being ramped up/down during start/stop.

Bit 08 = “1” means that the present motor speed matches the preset speed reference.

Bit 09, Local operation/bus control:

Bit 09 = “0” means that [Stop/Reset] is activated on the control unit. It is not possible to control the frequency converter via serial communication.

Bit 09 = “1” means that it is possible to control the frequency converter via serial communication.

Bit 10, Out of frequency limit:

Bit 10 = “0”, if the output frequency has reached the value in par. 4-12

Motor speed low limit

or par . 4-13

Motor speed high limit

Bit 10 = “1” means that the output frequency is within the defined limits.

Bit 11, Running:

Bit 11 = “0” means that the motor is not running.

Bit 11 = “1” means that the frequency converter has a start signal or that the output frequency is higher than 0 Hz.

Bit 12, Resistor brake fault:

Bit 12 = “0” means that there is no resistor brake fault.