Siemens SINAMICS V20 Operating Instructions Manual page 269

Parameter Function
Note: P1256 = 0:
Maintain DC-link voltage until mains is returned or converter is tripped with undervoltage. The frequency is
kept above the frequency limit provided in P1257.
P1256 = 1:
Maintain DC-link voltage until mains is returned or converter is tripped with undervoltage or pulses are disa-
bled when frequency falls below the limit in P1257.
P1256 = 2:
This option ramps down the frequency to standstill even when mains return.
If mains do not return, frequency brought down under the control of Vdc_min controller until P1257 limit.
Then pulses are disabled or undervoltage has occurred. If mains return, then an OFF1 is active until P1257
limit. Then pulses are disabled.
P1257[0...2] Frequency limit for
kinetic buffering [Hz]
Frequency which kinetic buffering (KIB) either hold speed or disable pulses depending on P1256.
P1300[0...2] Control mode
Parameter to select the control method. Controls relationship between speed of motor and voltage supplied
by converter.
0
1
2
3
4
5
6
7
19
SINAMICS V20 Converter
Operating Instructions, 10/2019, A5E34559884-012
Range Factory
default
0.00 - 550.00 2.50
0 - 19 0
V/f with linear characteristic
V/f with FCC
V/f with quadratic characteristic
V/f with programmable characteristic
V/f with linear eco
V/f for textile applications
V/f with FCC for textile applications
V/f with quadratic eco
V/f control with independent voltage setpoint
Can be Scaling Data set
changed
U, T - DDS
C, T - DDS
Parameter list
8.2 Parameter list
Data Acc.
type Level
Float 3
U16 2
267