38
VLT
®
3500 HVAC
MG.35.B1.02 – VLT is a registered Danfoss trademark
■
Initialisation
Initialisation is used when wanting to go back to a
known starting point (the factory setting).
This need arises if the software version is changed, or
if the parameters have been changed so much that
the starting point is no longer known, or if the unit
starts acts unpredictably and cannot be reset in the
normal way.
Initialisation is effected basically in two ways: Manual
initialisation and initialisation via parameter 604.
3.2 Initialisation
Manual initialisation
Cut out the mains voltage and hold down the "Menu",
"Data" and "Local Hand" keys while cutting the mains
voltage back in. Release the keys when the 3rd line
on the display reads INIT EEPROM.
When INIT EEPROM is no longer displayed in the 3rd
line, the factory setting has been programmed into
the unit.
This method is used:
When introducing another software version.
Manual setting means:
•
First-time set-up of communication parameters
to ensure factory setting (these parameters
are set from the operating panel of the unit):
Standard
(RS 485)
500 Address
501 Baud Rate
Profibus
820 Baud Rate
821 FMS/DP select
822 Station Delay
904 PPO Write
918 Station Address
•
Reset of operating data such as kWh and total
number of running hours (parameter 600), as
well as alarm memory (parameter 602).
•
Initialisation of all other parameters, as
described under initialisation via parameter 604.
■
Initialisation via parameter 604
This method is used:
•
When initialising all parameters to the factory
setting, except:
Communication parameters (parameters 500 and
501) and the stated Profibus parameters if this option
has been installed.
Operating data (parameter 600)
Alarm memory (parameter 602)
NB! If factory setting of data is only wanted in a single
set-up, the
Pre-programme
can be selected in para-
meter 001.
In parameter 002, copying from this setting to the
selected set-up is carried out.
■
■
"Lock" switch
Unwanted programming can be avoided by opening
the switch pin 01 on the control card.
When the switch pin is open, the programming
function of the operating panel is locked.
If Local Mode is active, the local reference can still be
changed.
