Bus Speed Reference Value - Danfoss FC 300 Manual

FC 300 Interbus
- How to Control the FC 300 -
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.

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.
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.
Negative figures
MG.33.J1.02 VER. 050301 – VLT is a registered Danfoss trademark
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%.
Master → slave
CTW
Slave → master
STW
16 bit
Speed ref.
16 bit
Actual output freq.
31