Danfoss VLT Series Programming Manual page 26

Parameter Description
0-04 Operating State at Power-up
Option: Function:
Select the operating mode upon reconnection
of the frequency converter to mains voltage
after power down when operating in Hand
(local)mode.
[0] Resume Resumes operation of the frequency converter
*
maintaining the same local reference and the
same start/stop condition (applied by [Hand
On]/[Off] on the LCP or Hand Start via a digital
input as before the frequency converter was
powered down.
[1] Forced Uses saved reference [1] to stop the frequency
stop, converter but at the same time retain in
ref=old memory the local speed reference prior to
power down. After mains voltage is
reconnected and after receiving a start
command (using the LCP [Hand On] button or
Hand Start command via a digital input) the
frequency converter restarts and operates at
the retained speed reference.
3.2.2 0-1* Set-up Operations
Define and control the individual parameter set-ups.
The frequency converter has four parameter setups that
can be programmed independently of each other. This
makes the frequency converter very flexible and able to
meet the requirements of many different VLT
system control schemes often saving the cost of external
control equipment. For example these can be used to
program the frequency converter to operate according to
one control scheme in one setup (e.g. daytime operation)
and another control scheme in another setup (e.g. night
set back). Alternatively they can be used by an AHU or
packaged unit OEM to identically program all their factory
fitted frequency converters for different equipment models
within a range to have the same parameters and then
during production/commissioning simply select a specific
setup depending on which model within that range the
frequency converter is installed on.
The active setup (i.e. the setup in which the frequency
converter is currently operating) can be selected in
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
frequency converter running or stopped, via digital input
or serial communication commands (e.g. for night set
back). If it is necessary to change setups whilst running,
ensure 0-12 This Set-up Linked to is programmed as
required. For the majority of VLT
it will not be necessary to program 0-12 This Set-up Linked
to even if change of set up whilst running is required, but
for very complex applications, using the full flexibility of
the multiple setups, it may be required. Using
0-11 Programming Set-up it is possible to edit parameters
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within any of the setups whilst continuing the frequency
converter operation in its Active Setup which can be a
different setup to that being edited. Using 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 frequency
converter is to operate.
Use 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 0-12 This Set-up Linked to. Stop the
frequency converter before switching between
set-ups where parameters marked 'not
changeable during operation' have different
values.
Parameters which are 'not changeable during
operation' are marked FALSE in the parameter
lists in the section Parameter Lists
[0] Factory Cannot be changed. It contains the Danfoss
setup 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 Set- Is used for remote selection of set-ups using
up digital inputs and the serial communication
port. This set-up uses the settings from
0-12 This Set-up Linked to.
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