22
Unidrive Regen Installation Guide
www.controltechniques.com
Issue Number: 2
8
Parameter descriptions
Note that the equivalent Menu 0 parameter appears in the box preceding the parameter description.
8.1
Menu 15: Sinusoidal rectifier
A Unidrive can be used as a sinusoidal input current power unit to supply one or more Unidrives via their DC buses. When this mode is selected as
the drive type, menu 15 appears. This menu is used to set up the Unidrive. At the same time, menu 0 defaults to showing Pr 15.01 to Pr 15.13 as Pr
0.11 to Pr 0.28.
This parameter gives the rms phase current from the supply. The sinusoidal rectifier controls the current so that the fundamental current and voltage
are in phase at the power terminals of the drive. There is a small phase shift across the input inductors, and so the current magnitude and the real
component of current are approximately equal. If power is flowing into the sinusoidal rectifier the current magnitude is negative, and if power is flowing
out (back into the supply) the current magnitude is positive.
When the sinusoidal rectifier unit is active the supply voltage is given by this parameter. If the unit is not active this parameter shows zero.
Total supply power of the drive is calculated from the product of the line voltage and current which is equivalent to 15.01 x 15.02 x
√
3. Note that as the
power factor is approximately unity the power is equal to the volt-amperes. The power shown is that flowing out of the drive, hence when power is
flowing from the supply to the Regen drive Pr 15.03 is negative, and when power is flowing from the Regen drive back into the supply Pr 15.03 is
positive.
Voltage at the DC output of the drive.
When the sinusoidal rectifier unit is active this parameter gives the supply frequency. Positive values indicate positive phase sequence and negative
values indicate negative phase sequence. If the unit is not active this parameter shows zero.
Key to parameter codes:
ô
Range of values
ð
Default value
RW
Read/Write
RO
Read Only
Bit
Two state only parameter, 0 or 1.
Bi
Bipolar - can have positive and negative values.
Uni
Unipolar - can have positive values only.
Txt
Parameter value is represented on the display with strings of Text.
P
Parameter is Protected from being controlled by programmable inputs
and functions.
15.01
0.11
Supply current magnitude
ô
± Maximum drive current
ð
A
RO
Bi
P
15.02
0.12
Supply voltage
ô
0 to 528
ð
Vac
RO
Uni
P
15.03
0.13
Supply power
ô
± Drive max. current x 5.09 x
√
3/1000
ð
kW
RO
Bi
15.04
0.14
DC bus voltage
ô
0 to 830
ð
Vdc
RO
Uni
P
15.05
0.15
Supply frequency
ô
±100
ð
Hz
RO
Bi
P
