Power Unit I2T Monitoring Derating Factor K1 Limit Value; Load Class / Load Class; Power Unit Nameplate Options / Pu Options - Siemens SINAMICS DCM List Manual

p50066 Power unit I2t monitoring derating factor K1 limit value / PU fact K1 lim val
DC_CTRL Can be changed: T
Data type: FloatingPoint32
P-Group: -
Not for motor type: -
Min
0.50
Description: Sets the limit value for derating factor K1 (thermal power reduction factor).
This limit value is necessary for devices with option L99.
If this limit value is fallen below, then an appropriate alarm is output.
Dependency: Refer to: A60082
Note: The derating factor K1 should be taken from the following reference:
SINAMICS DCM Operating Instructions - Chapter "Sensor for ambient or air intake temperature"
p50067

Load class / Load class

DC_CTRL Can be changed: C2(1), T
Data type: Integer16
P-Group: -
Not for motor type: -
Min
1
Description: Load class setting.
Dependent upon the selected load class, the device's rated direct current is reduced to a value which will vary
according to power unit and load class.
The current value of the device's rated direct current is displayed via r50072[1].
Value: 1:
2:
3:
4:
5:
Note: If the device's rated direct current is also reduced via p50076[0], the smaller of the two values will be applied.
If p50067 is set to a value > 1, you must ensure that the "dynamic overload capability of the power unit" is enabled (in
other words, a value > 0 must be set in p50075).
The device does not check for compliance with the load class set in p50067. If the power unit is able to tolerate it, the
device can run at overload for longer than is permitted by the load class.
The actual permissible overload duration for each power unit is always longer than the overload duration permitted by
the load class. The device checks for compliance with the overload duration actually permitted by the power unit.
r50068[0...95]

Power unit nameplate options / PU options

DC_CTRL Can be changed: -
Data type: Unsigned8
P-Group: -
Not for motor type: -
Min
-
Description: Displays the options according to the power unit's nameplate.
Note: The individual digits of the number are displayed in ASCII code in the indices.
An ASCII table (excerpt) can be found, for example, in the appendix to the List Manual.
SINAMICS DCM
List Manual (LH8), 02/2015, 6RX1800-0ED76
DC I
DC II
DC III
DC IV
US rating
Calculated: -
Dyn. index: -
Unit group: -
Scaling: -
Max
1.00
Calculated: -
Dyn. index: -
Unit group: -
Scaling: -
Max
5
Calculated: -
Dyn. index: -
Unit group: -
Scaling: -
Max
-
2 Parameters
2.2 List of parameters
Access level: 2
Func. diagram: 8042
Unit selection: -
Expert list: 1
Factory setting
0.50
Access level: 1
Func. diagram: 6960
Unit selection: -
Expert list: 1
Factory setting
1
Access level: 1
Func. diagram: 6960
Unit selection: -
Expert list: 1
Factory setting
-
387