Kollmorgen AKD PDMM series, User Manual

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AKD PDMM User Guide | 42.5 REGEN.TYPE
continuously calculates the power dissipated in the resistor and processes that power value
through a single pole low pass filter to model the regen resistor's thermal inertia. When the fil-
tered regen power on the output of the filter exceeds REGEN.WATTEXT, a fault occurs.
REGEN.TEXT sets the time constant of this thermal inertia filter.
REGEN.TEXT can often be found directly on power resistor data sheets. On the data sheets,
find the peak overload curve and then find the safe allowed time to be at 150% of the regen
resistor's continuous power rating. Another way regen resistor peak overload capability is often
specified is by giving the energy rating in joules of the resistor. If you have the energy rating E
then:
REGEN.TEXT = (1.1)*((joule limit)/REGEN.WATTEXT)
Example
The external regen resistor is rated for 250 W continuous, is 33 ohm, and has a joule rating of
500 joules. To use this resistor, the drive settings become:
REGEN.TYPE = -1 (External Regen)
REGEN.REXT = 33
REGEN.WATTEXT = 250
REGEN.TEXT = (1.1)*(500 j)/(250 W) = 2.2 sec
Related Topics
6.2 Regeneration
42.5 REGEN.TYPE
General Information
Type NV Parameter
Function Sets the regen resistor type.
WorkBench Location (Screen/Dialog
Box) Power/Regen Resistor
Type
Units N/A
Range –1 to 0
Default Value 0
Data Type Integer
See Also N/A
Start Version M_01-00-00-000
Fieldbus Index/Subindex Object Start Version
EtherCAT COE and CAN-
open
/0
M_01-00-00-000
Description
You can specify a user-defined external regen resistor, select an internal regen resistor, or
choose from a list of predefined regen resistors. The values for REGEN.TYPE are shown
below:
Type Description
–1
External user-defined regen
resistor
0 Internal regen resistor
425 Kollmorgen™ | December 2012