Danfoss VLT HVAC Series, Руководство по программированию, Страница: 28 / 338

0-05 Local Mode Unit
Option: Function:
Defines if the local reference unit should be displayed in terms of the motor shaft speed (in RPM/
Hz) or as percent.
[0] * As Motor Speed Unit
[1] %
3.2.3 0-1* Set-up Operations
Define and control the individual parameter set-ups.
The adjustable frequency drive has four parameter set-ups that can be programmed independently of each other. This makes the adjustable frequency
drive very flexible and able to meet the requirements of many different VLT HVAC Drive system control schemes often saving the cost of external control
equipment. For example, these can be used to program the adjustable frequency drive to operate according to one control scheme in one set-up (e.g.,
daytime operation) and another control scheme in another set-up (e.g., night set back). Alternatively, they can be used by an AHU or packaged unit OEM
to identically program all their factory-fitted adjustable frequency drives to the same parameters on different equipment models within a range, and then
during production/commissioning, only need a specific set-up selection depending on which model the adjustable frequency drive is installed on within
that range.
The active set-up (i.e., the set-up in which the adjustable frequency drive is currently operating) can be selected in par.0-10
Active Set-up
and is displayed
in the LCP. Using Multi set-up, it is possible to switch between set-ups with the adjustable frequency drive running or stopped, via digital input or serial
communication commands (e.g., for night set back). If it is necessary to change set-ups while running, ensure par.0-12
This Set-up Linked to
is pro-
grammed as required. For the majority of VLT HVAC Drive applications, it will not be necessary to program par.0-12
This Set-up Linked to
even if a set-
up must be changed while running. For very complex applications which use the full flexibility of the multiple set-ups, it may be required. Using par.
0-11
Programming Set-up
, it is possible to edit parameters in any of the set-ups during adjustable frequency drive operation in its active set-up; this set-
up can be different than the one being edited. Using par.0-51
Set-up Copy
, it is possible to copy parameter settings between the set-ups to enable quicker
commissioning if similar parameter settings are required in different set-ups.
0-10 Active Set-up
Option: Function:
Select the set-up in which the adjustable frequency drive is to operate.
Use par.0-51
Set-up Copy
to copy a set-up to one or all other set-ups. To avoid conflicting settings
of the same parameter within two different set-ups, link the set-ups together using par.0-12
This
Set-up Linked to
. Stop the adjustable frequency drive before switching between set-ups, where
parameters marked ‘not changeable during operation’ have different values.
Parameters that are ‘not changeable during operation’ are marked FALSE in the parameter lists in
the section Parameter Lists.
[0] Factory setup Cannot be changed. It contains the Danfoss data set, and can be used as a data source when
returning the other set-ups to a known state.
[1] * Set-up 1
Set-up 1
[1] to
Set-up 4
[4] are the four separate parameter set-ups within which all parameters
can be programmed.
[2] Set-up 2
[3] Set-up 3
[4] Set-up 4
[9] Multi setup Is used for remote selection of set-ups using digital inputs and the serial communication port. This
set-up uses the settings from par.0-12
This Set-up Linked to
.
3 Parameter Description VLT ® HVAC Drive Programming Guide
3-4
MG.11.C6.22 - VLT ® is a registered Danfoss trademark
3