Rockwell Automation Publication 20D-PM001D-EN-P - March 2019 77
Programming and Parameters Chapter 2
405 Dead Time Comp
The amount of voltage correction used to compensate for the loss of voltage during dead time. Do not adjust.
Contact factory for alternative settings.
Default:
Min/Max:
Units:
0
0/200
%
RW 16-bit
Integer
406 Power Loss Mode
Enter a value to configure the drive's response to a loss of input power, as sensed by an input voltage below the
value specified in Par
408 [Power Loss Level].
• Enter a value of “0” to make the drive fault and coast to a stop (supply no current to the motor) after the
amount of time specified in Par 407 [Power Loss Time] has expired.
• Enter a value of “2” to make the drive fault and continue "normal" operation after the amount of time
specified in Par 407 [Power Loss Time] has expired.
• Enter a value of “5” to make the drive provide only motor flux current during the power loss time.
Default:
Options:
0 =
0 =
1 =
2 =
“Coast”
“Coast” 3 = “Reserved”
“Reserved” 4 = “Reserved”
“Continue” 5 = “Flux Only”
407 Power Loss Time
Sets the amount of time that the drive will remain in a ride through condition before a fault is detected.
Default:
Min/Max:
Units:
2.0000
0.0000/60.0000
s
RW Real
408 Power Loss Level
Sets the percentage of the bus voltage at which ride-through begins and modulation ends. When the bus voltage
falls below this level and Par
406 [Power Loss Mode] is set to 0 “Coast” or 5 “Flux Only”, an alarm (F92 “Ride Thru”)
will be displayed on the HIM and the drive prepares for an automatic restart. Enter a percentage of the bus voltage
derived from the high voltage setting for the voltage class. For example: On a 400-480V drive,
Note: The definition was updated to include the bit settings for parameter 406 for firmware version 4.002.
Default:
Min/Max:
Units:
Scale:
22.1
15/95
%
0
RW 16-bit
Integer
409 Line Undervolts
Controls the level of bus voltage that is needed to complete precharge and sets the level for undervoltage alarm/
fault detection. Enter a percentage of the bus voltage derived from the value in Par 401 [Rated Volts].
For example: on a 480V drive,
Default:
Min/Max:
Units:
61.5000
10.0000/90.0000
%
RW Real
410 PreChrg TimeOut
Sets the time duration of precharge. If bus voltage does not stabilize within this amount of time, a Precharge Error
exception event occurs.
Default:
Min/Max:
Units:
30.0000
10.0000/180.0000
s
RW Real
411 PreChrg Control
Must equal 1 to allow drive to exit precharge and begin to run. Link this parameter to a controller output word to
coordinate the precharge of multiple drives.
Default:
Options:
1 =
0 =
1 =
“Enbl PrChrg”
“Hold PrChrg”
“Enbl PrChrg”
No. Name
Description
Values
Linkable
Read-Write
Data Type
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