Parameters
List of Parameters
1-162
© Siemens AG 2007 All Rights Reserved
SINAMICS G120 Control Units CU240S, Edition 05/2007
Description: Dynamically adjusts output frequency of inverter so that motor speed is kept constant independent of motor load.
In the V/f-control, the motor frequency will always be less than the inverter output frequency due to the slip fre-
quency. 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.
Dependency: Gain adjustment enables fine-tuning of the actual motor speed (see P1460 - gain speed control).
Notice: The applied value of the slip compensation (scaled by P1335) is limited by following equation:
Note: 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).
Description: Compensation slip limit in [%] relative to r0330 (rated motor slip), which is added to frequency setpoint.
Dependency: Slip compensation (P1335) active.
Description: Displays actual compensated motor slip as [%]
Dependency: Slip compensation (P1335) active.
Description: Defines resonance damping gain for V/f.
The di/dt of the acitve current will be scaled by P1338. If di/dt increases the resonance damping circuit decreases
the inverter output frequency.
Note: The resonance circuit damps oscillations of the active current which frequently occur during no-load operation. In
V/f modes (see P1300), the resonance damping circuit is active in a range from approx. 6 % to 80 % of rated motor
frequency (P0310). If the value of P1338 is too high, this will cause instability (forward control effect).
p1335[0...2] Slip compensation / Slip compensation
Access level: 2 P-Group: Closed-loop control Data type: Floating Point
Quick comm. NO Active: YES Data set: DDS
Can be changed: U, T
Min Max Factory setting
0.0 [%] 600.0 [%] 0.0 [%]
r0330
100
P1336
f
maxSlip_comp_
â‹…=
p1336[0...2] Slip limit / Slip limit
Access level: 2 P-Group: Closed-loop control Data type: Unsigned16
Quick comm. NO Active: YES Data set: DDS
Can be changed: U, T
Min Max Factory setting
0 [%] 600 [%] 250 [%]
r1337 CO: V/f slip frequency / V/f slip freq.
Access level: 3 P-Group: Closed-loop control Data type: Floating Point
Unit: [%] Data set: -
p1338[0...2] Resonance damping gain V/f / Res.damp. gain V/f
Access level: 3 P-Group: Closed-loop control Data type: Floating Point
Quick comm. NO Active: YES Data set: DDS
Can be changed: U, T
Min Max Factory setting
0.00 10.00 0.00
To Next Page
Loading...
Need help?
General
