Operating instructions

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
stop,
ref=old
Uses saved reference [1] to stop the frequency
converter but at the same time retain in 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.
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] %
3.2.2 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 HVAC Drive 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). Alterna-
tively they can be used by an AHU or packaged unit OEM to
identically program all their factory fitted frequency convert-
ers 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
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
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
par. 0-12 This Set-up Linked to is programmed 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
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 par. 0-11 Programming Set-
up it is possible to edit parameters 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 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 frequency convert-
er 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 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
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 Set-
up
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.
Parameter Description
VLT
®
HVAC Drive Programming Guide
MG.11.CA.02 - VLT
®
is a registered Danfoss trademark 27
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