Danfoss VLT 6000 HVAC Wartungshandbuch PDF herunterladen (Seite 128)

VLT

6000 HVAC

MG.60.B1.02 - VLT is a registered Danfoss trademark

128

Bit 03, Coasting stop:

Bit 03 = "0" means that the VLT frequency converter

immediately "lets go" of the motor (the output

transistors are "turned off"), which means that the

motor runs freely until it stops.

Bit 03 = "1" means that the frequency converter is

able to start the motor, provided the other conditions

for starting are fulfilled. Note: In parameter 503

Coasting stop the choice is made of how bit 03 is to

be gated with the corresponding function of terminal

27.

Bit 04, Quick stop:

Bit 04 = "0" leads to a stop in which the motor speed

is ramped down to stop via parameter 207 Ramp-

down time.

Bit 05, Freeze output frequency:

Bit 05 = "0" means that the given output frequency (in

Hz) is frozen. The frozen output frequency can now

only be changed via the digital inputs programmed for

Speed up and Speed down.

NB!:

If Freeze output is active, the VLT frequency

converter cannot be stopped via Bit 06 Start or

via terminal 18. The VLT frequency converter

can only be stopped in the following ways:

● Bit 03 Coasting stop

● Terminal 27

● Bit 02 DC braking

● Terminal 19 programmed for DC braking

Bit 06, Ramp stop/start:

Bit 04 = "0" leads to a stop in which the motor speed

is ramped down to stop via parameter 207 Ramp-

down time.

Bit 06 = "1" means that the frequency converter is

able to start the motor, provided the other conditions

for starting are fulfilled. Note: In parameter 505 Start a

choice is made of the way bit 06 Ramp stop/start is to

be gated with the corresponding function of terminal

18.

Bit 07, Reset:

Bit 07 = "0" leads to no reset.

Bit 07 = "1"means that a trip is reset.

Reset is activated on the leading edge of the signal,

i.e. at the change from logic '0' to logic '1'.

Bit 08, Jog:

Bit 08 = "1" means that the output frequency is

determined by parameter 209 Jog frequency.

Bit 09, No function:

Bit 09 has no function.

Bit 10, Data not valid/Data valid:

Used for telling the VLT 6000 HVAC whether the

control is to be used or ignored. Bit 10 = "0" means

that the control word is ignored. Bit 10 = "1" means

that the control word is used. This function is relevant

because the control word is always contained in the

telegram, regardless of the type of telegram used, i.e.

it is possible to disconnect the control word if it is not

to be used in connection with updating or reading of

parameters.

Bit 11, Relay 1:

Bit 11 = "0": Relay 1 is not activated.

Bit 11 = "1": Relay 1 is activated, provided Control

word bits 11/12 has been selected in parameter 323

Relay outputs.

Bit 12, Relay 2:

Bit 12 = "0": Relay 2 is not activated.

Bit 12 = "1": Relay 2 is activated, provided Control

word bits 11/12 has been selected in parameter 326

Relay outputs.

NB!:

If the time-out period set in parameter 556 Bus

time interval function is exceeded, relays 1 and

2 will lose their voltage if they have been

activated via serial communication.

Bits 13/14, Choice of Setup:

Bits 13 and 14 are used to choose among the four

menu Setups in accordance with the following table:

Setup Bit 14 Bit 13

100

201

310

411

This function is only possible if Multi-setups has been

selected in parameter 004.

Note: In parameter 507 Choice of Setup a choice is

made of the way bits 13/14 are to be gated with the

corresponding function of the digital inputs.

Bit 15, No function/reversing:

Bit 15 = "0" leads to no reversing.

Bit 15 = "1" leads to reversing.

Please note that, in the factory setting, reversing has

been selected as digital in parameter 506 Reversing,

which means that bit 15 only leads to reversing, if

bus, logic or or logic and has been selected (however,

logic and only together with terminal 19).

1 2 ... 123 124 125 126 127 128 129 130 131 132 133 ... 176 177

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