AKD PDMM User Guide | 47.1 VBUS.HALFVOLT
47.1 VBUS.HALFVOLT
General Information
Type
NV Parameter
Description
Changing voltage thresholds for HV and MV Drives
Units
N/A
Range
0 to 1
Default
Value
0
Data Type
Integer
See Also
N/A
Start Version M_01-04-01-000
Description
This parameter is used in order to change some specific voltage thresholds in order to allow HV
(high voltage) Drives working with MV (medium voltage) thresholds and to allow MV (medium
voltage) Drives working with LV (low voltage) thresholds.
This parameter has an impact on the following voltage-thresholds:
1) DC-bus over-voltage threshold (see VBUS.OVFTHRESH).
2) The regen-resistor enable/disable voltage thresholds.
3) The inrush-relay enable/disable voltage thresholds.
A power-cycle is needed after changing the value of VBUS.HALFVOLT and after saving the
parameter on the NV memory of the Drive, since the voltage thresholds mentioned above are
read during the boot-sequence of the Drive.
The VBUS.HALFVOLT command takes only effect for a HV or MV Drive.
VBUS.HALFVOLT = 0: The original voltage thresholds are used for the functions mentioned
above.
VBUS.HALFVOLT = 1: Setting the parameter to 1 on a HV Drive causes the AKD PDMM to
use the voltage thresholds of a MV Drive for the functions mentioned above. Setting the param-
eter to 1 on a MV Drive causes the AKD PDMM to use the voltage thresholds of a LV Drive for
the functions mentioned above.
The sequence must be as follows:
1) Change the value of VBUS.HALFVOLT.
2) Trigger a DRV.NVSAVE command.
3) Power cycle the Drive in order to activate the new configuration.
Note
The DC-bus under voltage fault threshold (see VBUS.UVFTHRESH) is a user selectable com-
mand. It means that the user is responsible for setting the under voltage threshold to a proper
value in case that the AKD PDMM is supplied with a lower DC-bus voltage than the rated volt-
age.
47.2 VBUS.OVFTHRESH
General Information
Type
R/O Parameter
Description
Reads the over voltage fault
level.
Units
Vdc
445
Kollmorgen™ | December 2012
Summary of Contents for AKD PDMM series
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