Danfoss VLT 8000 AQUA Instrucciones de operaciones descargar pdf (Pagina 29)

MG.60.N2.02 - VLT is a registered Danfoss trademark

VLT

5000 / VLT

6000 HVAC / VLT

8000 AQUA

Precedence of the stop commands

is:

1. Coast stop

2. Quick stop

3. DC brake stop

4. Ramp stop

Coast stop

The drive output stops immediately

and the motor coasts to a stop.

• Drive display show UN.READY

(unit ready) when coast stop

is active.

• Drive cannot run in any mode.

• Parameter 503 (502),

Coasting stop

, determines

interaction with input 27.

Quick stop

The drive output frequency ramps

down to 0 Hz according to time set

in parameter 207 (212),

Ramp Down

Time

• Drive display shows STOP.

• Drive cannot run in AUTO

mode but can run in HAND

mode.

DC brake stop

The drive brakes the motor to a stop

using DC injection braking.

• Parameters 114 (125) and 115

(126) determine amount and

time of DC current applied for

braking.

• Drive display shows DC STOP.

• Drive cannot run in AUTO

mode but can run in HAND

mode.

• Parameter 504,

DC Brake

determines interaction with

input 27.

Drive Speed Setpoint

With this input variable it is possible to

give the Drive a Start/stop signal and a

reference.

State Ref. value Command

0 - Stop

1 0 Run, Ref. = 0%

1 0-100% Run, Ref. = 0-100%

0xFF - Auto (invalid)

Default is Auto.

Analog output 42/45

With this input variable it is possible to

control the analog output 42/45 in the

range from 0-100%. To control the analog

output parameter 319/321

Signal Output

42/45

should be programmed to one of

the following selections:

• Bus control 0-20 mA [44]

• Bus control 4-20 mA [45]

• Bus control Pulse [46]

Ramp stop

The drive output frequency ramps down to

0 Hz according to time set in parameter

207,

Ramp Down Time

• Factory setting is 60 sec for fan

applications and 10 sec for most

pump applications.

• Drive display shows STAND BY.

• Drive can run in HAND mode or

AUTO through a digital input

command.

• Parameter 505,

Start

, determines

interaction with input 18.

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 43 44

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Danfoss VLT 8000 AQUA Instrucciones de operaciones Pagina 29

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