Danfoss VLT HVAC Instruksi - Halaman 5

Jelajahi secara online atau unduh pdf Instruksi untuk Pengontrol Danfoss VLT HVAC. Danfoss VLT HVAC 11 halaman. Cascade controller
Juga untuk Danfoss VLT HVAC: Petunjuk Manual (16 halaman)

Halaman Cetak

VLT® HVAC Basic Drive Casca...

Parameter

Range

25-20 Staging

1 - Expres-

Bandwidth

sionlimit (100)

Expressionlimit

(100) - 100%

25-22 Fixed

Expressionlimit

Speed

(1) - Expres-

Bandwidth

sionlimit (100)

25-23 SBW

0-3000 s

Staging Delay

25-24 SBW

0-3000 s

Destaging

Delay

25-25 OBW

0-300 s

Time

25-27 Stage

[0] Disabled

Function

*[1] Enabled

25-28 Stage

0-300 s

Function Time

25-29 Destage

[0] Disabled

Function

*[1] Enabled

25-30 Destage

0-300 s

Function Time

VLT

HVAC Basic Drive Cascade Controller

Default

Function

*10%

Set the SBW

percentage to

accommodate

system pressure

fluctuation.

*100%

Set the OBW for

when to override

the staging/

destaging timers

for immediate

response.

*Expres-

Set the staging

sionlimit

bandwidth to use

(10)%

when only fixed

speed pumps are

running.

*15 s

Staging a pump

on is delayed by

the length of

time

programmed.

*15 s

Destaging a

pump is delayed

by the length of

time

programmed.

*10 s

OBW timer

prevents staging

a pump until the

system pressure

is stabilised.

*[1] Enabled

Enables the stage

function timer.

*15 s

With the lead

pump at

maximum speed,

a fixed speed

pump is staged

on when the

programmed

time expires.

*[1] Enabled

Enables the

destage function

timer.

*15 s

With the lead

pump at

minimum speed,

a fixed speed

pump is

destaged when

the programmed

time expires.

MI18I302 - VLT

is a registered Danfoss trademark

Parameter

Range

25-42 Staging

Expressionlimit

Threshold

(0)-100%

25-43 Destagi

Expressionlimit

ng Threshold

(0)-100%

25-45 Staging

0-400 Hz

Speed [Hz]

25-47 Destagi

0-400 Hz

ng Speed [Hz]

25-50 Lead

*[0] Off

Pump

[1] At staging

Alternation

[2] At

command

[3] At staging

or command

25-51 Alternati

*[0] External

on Event

[1] Alternation

Time Interval

[2] Sleep Mode

25-52 Alternati

1-999

on Time

Interval

25-53 Alternati

on Timer

Value

25-55 Alternat

[0] Disabled

e if Load <=

*[1] Enabled

50%

25-56 Staging

*[0] Slow

Mode at

[1] Quick

Alternation

25-57 Relays

1-2

per Pump

Default

Function

*90%

The percentage

[%] of maximum

pump speed to

stage on a fixed

speed pump.

*50%

The percentage

[%] of maximum

pump speed to

destage a fixed

speed pump.

*0.0 Hz

The actual

staging speed

based on the

staging threshold.

*0.0 Hz

The actual

destaging speed

based on the

destaging

threshold.

*[0] Off

Changes the lead

pump so all

pumps run equal

time.

*[0] External

Choose the event

that will change

the lead pump.

*24

Set the time

period between

automatic

alternation of the

lead pump.

View the actual

value of the

Alternation Time

Interval timer.

*[1] Enabled

Choose enable to

change the

variable speed

pump only if the

pump load is less

than 50%.

*[0] Slow

The number of

relays used per

pump.