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Menu 11

Unidrive SP Advanced User Guide 211

Issue Number: 10 www.controltechniques.com

When the data is transferred back to a drive, using 6yyy in Pr x.00, it is transferred to the drive RAM and then to the drive EEPROM. A parameter

save is not required to retain the data after power-down.

Onboard Application Lite user program data blocks

This type of data block is created when 5xxx in Pr x.00 is used to initiate the transfer. The Onboard Application Lite user program from a drive may be

transferred to/from internal flash memory from/to a SMART card. If the user program is transferred from a drive with no program loaded the block is

still created on the card, but contains no data. If this is then transferred to a drive the drive will then have no user program.

When transferring data between drives the following should be noted:

Parameter transfer failure

When parameter or default difference data is transferred to the drive the parameters are automatically saved to drive EEPROM. If the transfer from

the card fails for any reason the drive produces the appropriate trip. If the failure occurs after the transfer has begun, it is possible that some, but not

all the parameters will have been updated with the card data. However, if the transfer fails the parameters are not saved to drive EEPROM, therefore

only the RAM values will be incorrect. If the drive is powered down and then powered up again the original drive parameters will be restored.

Read-only function

Data blocks with numbers from 1 to 499 can be created or erased by the user. Data block with numbers 500 and above are read-only and cannot be

created or erased by the user. The whole card may also be protected from writing or erasing by setting the read-only flag. If the card or a data block

on the card is read-only, then the operation to erase the whole card is disabled.

Changing the drive mode

If the destination drive has a different drive mode to the parameters on the card, the drive mode will be changed by the action of transferring

parameters from the card to the drive. The only exception is that the mode cannot be changed to a mode that is not allowed for the particular

derivative of drive, e.g. Regen mode is not allowed with the Unidrive ES derivative. If an attempt is made to change to a disallowed mode the drive

produces a C.Typ trip.

Different voltage ratings

If the voltage rating of the source and destination drive are different then the parameters are transferred with the exception of rating dependent

parameters (RA attribute set, see table below), which are left at their default values. In this case a C.rtg trip is given as a warning that this has

happened. It is possible to suppress this warning trip for any data transfer to the drive, including a boot transfer at power-up by setting the warning

suppression flag for the whole card.

Different Solutions Modules installed

If the categories of the Solutions Modules installed to the source drive are different to the destination drive then the parameters are transferred with

the exception of the parameters in the menus of the modules that are different. These parameters are left at their default values. In this case a C.Optn

trip is given as a warning. It is possible to suppress this warning trip for any data transfer to the drive, including a boot transfer at power-up by setting

the warning suppression flag for the whole card.

Different current rating with a parameter file type data block

If the current ratings of the source and destination drive are different and the parameters stored as a parameter file (not differences from default) then

rating dependant parameters are set to their defaults and a C.rtg trip is produced as described above where the voltage ratings are different. It is

possible to suppress this warning trip for any data transfer to the drive, including a boot transfer at power-up by setting the warning suppression flag

for the whole card.

Different current rating with difference from defaults type data block

If the current ratings of the source and destination drives are different, but the parameters are stored as a difference from defaults file, the rating

dependant parameters are transferred from the card to the drive and the appropriate maximums are applied. The C.rtg is still produced unless it is

suppressed. To ensure that the performance of the destination drive is similar to that of the source drive, the speed controller gains and current

controller gains are scaled as shown in the table below. Note that the gain scaling is only applied when the data block number

is less than 500.

Parameter number Function

Pr 2.08 Standard ramp voltage

Pr 3.05 Regen unit voltage setpoint

Pr 4.05 - Pr 4.07, Pr 21.27- Pr 21.29 Current limits

Pr 4.24 User current maximum scaling

Pr 5.07, Pr 21.07 Motor rated current

Pr 5.09, Pr 21.09 Motor rated voltage

Pr 5.10, Pr 21.10 Rated power factor