Danfoss FC 300 Design Manual page 175

FC 300 Design Guide
Explanation of the Control Bits
Bits 00/01
Bits 00 and 01 are used to choose between the four reference values, which are pre-programmed
in par. 3-10
Programmed ref. value
1
2
3
4
Bit 02, DC brake:
Bit 02 = '0' leads to DC braking and stop. Set braking current and duration in par. 2-01
Current
Bit 03, Coasting:
Bit 03 = '0': The adjustable frequency drive immediately "lets go" of the motor (the output tran-
sistors 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.
Preset reference according to the following table:
Par.
3-10 [0]
3-10 [1]
3-10 [2]
3-10 [3]
NOTE
Make a selection in par. 8-56
Preset Reference Select
fine how Bit 00/01 gates with
the corresponding function on
the digital inputs.
DC Braking Time
and 2-02 . Bit 02 = '1' leads to ramping.
NOTE
Make a selection in par. 8-50
corresponding function on a digital input.
MG.33.B9.22 - VLT ® is a registered Danfoss trademark.
9. RS-485 Installation and Set-up
Bit 01
0
0
1
1
to de-
Coasting Select
to define how Bit 03 gates with the
Bit 00
0
1
0
1
DC Brake
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