Operating instructions

Bit 09, Selection of ramp 1/2

Bit 09 = "0" means that ramp 1 is active (parameters 3-40 to 3-47). Bit 09 = "1" means that ramp

2 (par. 3-50 to 3-57) is active.

Bit 10, Data not valid/Data valid

Is used to tell the frequency converter whether the control word is to be used or ignored. Bit 10

= "0" causes the control word to be ignored, Bit 10 = "1" causes the control word to be used.

This function is relevant, because the control word is always contained in the telegram, regardless

of which type of telegram is used, i.e. it is possible to turn off the control word if you do not wish

to use it in connection with updating or reading parameters.

Bit 11, Relay 01

Bit 11 = "0" Relay not activated. Bit 11 = "1" Relay 01 activated, provided Control word bit 11 has

been chosen in par. 5-40

Function relay

Bit 12, Relay 04

Bit 12 = "0" Relay 04 has not been activated. Bit 12 = "1" Relay 04 has been activated, provided

Control word bit 12

has been chosen in par. 5-40

Function relay

Bit 13/14, Selection of set-up

Bits 13 and 14 are used to choose from the

four menu set-ups according to the following

table:

The function is only possible when

Multi-Set-

ups

is selected in par. 0-10

Active Set-up

Set-up

Bit 14 Bit 13

1 0 0

2 0 1

3 1 0

4 1 1

NB!

In par. 8-55

Set-up select

a selection is made to define how Bit 13/14 gates with the

corresponding function on the digital inputs.

Bit 15 Reverse

Bit 15 = "0" causes no reversing.

Bit 15 = "1" causes reversing.

4. How to Control the Frequency Converter VLT

Profibus

MG.33.C4.02 - VLT

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