FC 300 Interbus
- How to Control the FC 300 -
MG.33.J1.02 VER. 050301 – VLT is a registered Danfoss trademark 31
Bit 11 = ’1’ means that the frequency
converter has a start signal or that the output
frequency is greater than 0 Hz.
Bit 12, Drive OK/stopped, autostart
:
Bit 12 = ’0’ means that there is no temporary
over temperature on the inverter.
Bit 12 = ’1’ means that the inverter has
stopped because of over temperature, but that
the unit has not tripped and will resume
operation once the over temperature stops.
Bit 13, Voltage OK/limit exceeded
:
Bit 13 = ’0’ means that there are no voltage
warnings.
Bit 13 = ’1’ means that the DC voltage in the
frequency converter’s intermediate circuit is
too low or too high.
Bit 14, Torque OK/limit exceeded
:
Bit 14 = ’0’ means that the motor current is
lower than the torque limit selected in
parameter 4-18 Current limit.
Bit 14 = ’1’ means that the torque limit in
parameter 4-18 Current limit has been
exceeded.
Bit 15, Timer OK/limit exceeded
:
Bit 15 = ’0’ means that the timers for motor
thermal protection and VLT thermal protection,
respectively, have not exceeded 100%.
Bit 15 = ’1’ means that one of the timers has
exceeded 100%.
Bus Speed Reference Value
The speed reference value is transmitted to the drive
in a relative value in %.
The value is transmitted in the form of a 16-bit word,
in integers (0-32767) the value 16384 (4000 Hex)
corresponds to 100%.
Negative figures are formatted by means of 2’s
complement.
Actual Output frequency
The value of the actual speed of the motor is
transmitted in the form of a 16-bit word. The value
is transmitted as a whole number. Negative figures
are formed by means of 2’s complement.
The reference is scaled the following way:
Parameter 3-00 = [0] Min - Max.
0% = par. 3-02 Minimum Reference.
100% = par. 3-03 Maximum Reference.
Parameter 3-00 = [1] –Max - +Max.
0% = 0hex.
100% = par. 3-03 Maximum Reference.
Master → slave
16 bit
CTW Speed ref.
Slave → master
16 bit
STW Actual output freq.
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