Parameter list
8.2 Parameter list
SINAMICS V20 Converter
Operating Instructions, 10/2019, A5E34559884-012
271
P1324[0...2]
Programmable V/f
freq. coord. 3 [Hz]
0.00 - 550.00 0.00 T - DDS Float 3
See P1320
P1325[0...2]
Programmable V/f
volt. coord. 3 [V]
0.0 - 3000.0 0.0 U, T - DDS Float 3
BICO parameter for selecting source of voltage setpoint for independent V/f control (P1300 = 19).
P1333[0...2]
Start frequency for
FCC [%]
0.0 - 100.0 10.0 U, T
PERCENT
DDS Float 3
Defines start frequency at which FCC (flux current control) is enabled as [%] of rated motor frequency (P0310).
If this value is too low, the system may become unstable.
P1334[0...2]
Slip compensation
activation range [%]
1.0 - 20.0 6.0 U, T
PERCENT
DDS Float 3
To set the frequency activation range for slip compensation. The percentage value of P1334 refers to the
motor rated frequency P0310.
The upper threshold will always stay 4 % above P1334.
Slip compensation (P1335) active.
See P1335.
The starting frequency of the slip compensation is P1334 * P0310.
PERCENT
Parameter dynamically adjusts converter output frequency so that motor speed is kept constant independ-
ent of motor load.
In the V/f-control, the motor frequency will always be less than the converter output frequency due to the slip
frequency. For a given output frequency, the motor frequency will drop as load is increased. This behavior,
typical for induction motors, can be compensated using slip compensation. P1335 can be used to enable
and fine-tune the slip compensation.
Gain adjustment enables fine-tuning of the actual motor speed.
P1335 > 0, P1336 > 0, P1337 = 0 if P1300 = 5, 6.
The applied value of the slip compensation (scaled by P1335) is limited by following equation:
f_Slip_comp,max = r0330 * (P1336/100)
P1335 = 0 %:
Slip compensation disabled.
P1335 = 50 % - 70 %:
Full slip compensation at cold motor (partial load).
P1335 = 100 % (standard setting for warm stator):
Full slip compensation at warm motor (full load).
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