Siemens SINAMICS S150 NEMA Operating Instructions Manual page 438

Setpoint channel and closed-loop control
7.3 V/f (V/Hz) control
Parameter Meaning
value
5 Precise frequency
drives (textiles)
6 Precise frequency
drives with flux
current control (FCC)
7 Parabolic
characteristic and
ECO
19 Independent voltage
setpoint
Function diagram
FP 6301
Parameters
• p1300
• p1320
• p1327
• p1330
• p1331
• p1333
• r1348
• p1350
436
Characteristic (see parameter value 0) that takes into account the technological
specifics of an application (e.g., textile applications).
The current limitation (Imax controller) affects only the output voltage and not the
•
output frequency.
Slip compensation and resonance damping are disabled.
•
Characteristic (see parameter value 1) that takes into account the technological
specifics of an application (e.g., textile applications).
The current limitation (Imax controller) affects only the output voltage and not the
•
output frequency.
Slip compensation and resonance damping are disabled.
•
Voltage losses in the stator resistor are also compensated for static / dynamic loads
(flux current control FCC). This is particularly useful for small motors, since they have
a relatively high stator resistance.
Characteristic (see parameter value 1) and Eco mode at a constant operating point.
At a constant operating point, the efficiency is optimized by varying the voltage.
•
This requires active slip compensation; the scaling must be set such that the slip
•
is fully compensated (p1335 = 100 %).
The user can define the output voltage of the Power Module independently of the
frequency using BICO parameter p1330 via the interfaces (e.g., analog input AI0 of
the TM31 –> p1330 = r4055[0]).
V/f characteristic and voltage boost
Open-loop/closed-loop control operating mode
V/f control programmable characteristic frequency 1
...
V/f control programmable characteristic voltage 4
CI: V/f control independent of voltage setpoint
Voltage limiting
V/f control FCC starting frequency
V/f control Eco-factor actual value
V/f control soft startup
Application/property
Operating Instructions, 11/2017, A5E36652151A
Converter cabinet units