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.
Bit 12 = “1” means that there is a resistor brake fault.
5 Modbus RTU
VLT
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Micro Drive FC 51 Operating Instructions
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MG.02.A4.02 - VLT
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