Danfoss FC 300 Interbus Instruções de Operação descarregar pdf (Página 26)

5.4. Danfoss FC Control Profile

5.4.1. Control Word according to FC Profile

(Par. 8-10 = FC profile)

Bit Bit value = 0 Bit value = 1

00 Reference value External selection lsb

01 Reference value External selection msb

02 DC brake Ramp

03 Coasting No coasting

04 Quick stop Ramp

05 Hold output frequency Use ramp

06 Ramp stop Start

07 No function Reset

08 No function Jog

09 Ramp 1 Ramp 2

10 Data invalid Data valid

11 No function Relay 01 active

12 No function Relay 04 active

13 Parameter set-up Selection lsb

14 Parameter set-up Selection msb

15 No function Reverse

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

Preset Reference

according to

the following table:

Programmed

ref. value

Parameter Bit 01 Bit 00

1 3-10 [0] 0 0

2 3-10 [1] 0 1

3 3-10 [2] 1 0

4 3-10 [3] 1 1

NB!

In par. 8-56

Preset Reference Select

a selection is

made to define how Bit 00/01 gates with the corre-

sponding function on the digital inputs.

Bit 02, DC brake:

Bit 02 = ’0’ leads to DC braking and stop.

Braking current and duration are set 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’ causes the frequency converter to immediately "let go" of the

motor (the output transistors are "shut off"), so that it coasts to a stand-

still.

Bit 03 = ’1’ enables the frequency converter to start the motor if the other

starting conditions have been fulfilled.

NB!

In par. 8-50

Coasting Select

a selection is made to de-

fine how Bit 03 gates with the corresponding function

on a digital input.

Bit 04, Quick stop:

Bit 04 = ’0’ causes a stop, in which the motor speed is ramped down to

stop via par. 3-81

Quick Stop Ramp Time

Bit 05, Hold output frequency:

Bit 05 = ’0’ causes the present output frequency (in Hz) to freeze. The

frozen output frequency can then be changed only by means of the digital

inputs (par. 5-10 to 5-15) programmed to

Speed up

and

Speed down

NB!

If Freeze output is active, the frequency converter can

only be stopped by the following:

• Bit 03 Coasting stop

• Bit 02 DC braking

• Digital input (par. 5-10 to 5-15) programmed

DC braking

Coasting stop

Reset

and

Coasting stop

Bit 06, Ramp stop/start:

Bit 06 = ’0’ causes a stop, in which the motor speed is ramped down to

stop via the selected

ramp down

parameter.

Bit 06 = ’1’ permits the frequency converter to start the motor, if the other

starting conditions have been fulfilled.

NB!

In par. 8-53

Start Select

a selection is made to define

how Bit 06 Ramp stop/start gates with the correspond-

ing function on a digital input.

Bit 07, Reset:

Bit 07 = ’0’ does not cause a reset.

Bit 07 = ’1’ causes the reset of a trip. Reset is activated on the signal’s

leading edge, i.e. when changing from logic ’0’ to logic ’1’.

5. How to Control the FC 300 FC 300 Interbus Operating Instructions

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