Danfoss VLT AutomationDrive FC 300 Design Manual page 244

FC 300 Design Guide
Bit 02, DC brake:
Bit 02 = "0": DC braking and stop. Set braking current and duration in par. 2-01 DC Brake
Current and 2-02 DC Braking Time. Bit 02 = "1" leads to ramping.
Bit 03, Coasting:
Bit 03 = "0": The adjustable frequency drive immediately "lets go" of the motor, (the output
transistors are "shut off") and it coasts to a standstill. Bit 03 = "1": The adjustable frequency
drive starts the motor if the other starting conditions are met.
NOTE
Make a selection in par. 8-50 Coasting Select to define how Bit 03 gates with
the corresponding function on a digital input.
Bit 04, Quick stop:
Bit 04 = "0": Makes the motor speed ramp down to stop (set in par. 3-81 Quick Stop Ramp Time).
Bit 05, Freeze output frequency:
Bit 05 = "0": The present output frequency (in Hz) freezes. Change the frozen output frequency only
by means of the digital inputs (par. 5-10 to 5-15) programmed to Speed up and Speed down.
NOTE
If Freeze output is active, the adjustable frequency drive can only be stopped by the following:
Bit 03 Coasting stop
•
Bit 02 DC braking
•
Digital input (par. 5-10 to 5-15) programmed to DC braking, Coasting stop, or Reset and coasting stop.
•
Bit 06, Ramp stop/start:
Bit 06 = "0": Causes a stop and makes the motor speed ramp down to stop via the selected ramp down par.
Bit 06 = "1": Permits the adjustable frequency drive to start the motor, if the other starting conditions are met.
NOTE
Make a selection in par. 8-53 Start Select to define how Bit 06 Ramp stop/start gates
with the corresponding function on a digital input.
Bit 07, Reset: Bit 07 = "0": No reset. Bit 07 = "1": Resets a trip. Reset is activated on the
signal's leading edge, i.e. when changing from logic "0" to logic "1".
Bit 08, Jog:
Bit 08 = "1": The output frequency is determined by par. 3-19 Jog speed.
Bit 09, Selection of ramp 1/2:
Bit 09 = "0": Ramp 1 is active (par. 3-40 to 3-47). Bit 09 = "1": Ramp 2 (par. 3-50 to 3-57) is active.
Bit 10, Data not valid/Data valid:
Tell the adjustable frequency drive whether to use or ignore the control word. Bit 10 = "0": The
control word is ignored. Bit 10 = "1": The control word is used. This function is relevant because the
telegram always contains the control word, regardless of the telegram type. Thus, it is possible to
turn off the control word and not use it when updating or reading parameters.
Bit 11, Relay 01:
Bit 11 = "0": Relay not activated. Bit 11 = "1": Relay 01 activated provided that
Control word bit 11 is chosen in par. 5-40.
default setting ( ) display text
*
244
How to Program
[ ] value for use in communication via serial communication port
MG.33.B3.22 - VLT is a registered Danfoss trademark