Setpoint channel and closed-loop control
7.3 V/f control
Inverter chassis units
330 Operating Instructions, 07/2016, A5E00331449A
5 Precise frequency
drives (textiles)
Characteristic (see parameter value 0) that takes into account the specific technolog-
ical features of an application (e.g. textile applications).
• The current limitation (Imax controller) only affects the output voltage and not the
output frequency.
• The slip compensation and resonance damping are disabled.
6 Precise frequency
drives with flux cur-
rent control (FCC)
Characteristic (see parameter value 1) that takes into account the specific technolog-
ical features of an application (e.g. textile applications).
• The current limitation (Imax controller) only affects the output voltage and not the
output frequency.
• The slip compensation and resonance damping are disabled.
Voltage losses in the stator resistance for static / dynamic loads are also compen-
sated (flux current control, FCC). This is particularly useful for small motors, since
they have a relatively high stator resistance.
7 Parabolic character-
istic and ECO
Characteristic (see parameter value 1) and Eco mode at constant operating point.
• At constant operating point, the efficiency is optimized by varying the voltage.
• Active slip compensation is necessary here; the scaling must be set so that the
slip is fully compensated (p1335 = 100%).
19 Independent voltage
setpoint
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]).
U/f characteristic and voltage boost
p1300
-loop/closed-loop control operating mode
p1320
U/f control programmable characteristic frequency 1
p1327
U/f control programmable characteristic voltage 4
p1330
ntrol independent of voltage setpoint
p1331
p1333
U/f control FCC starting frequency
r1348
U/f control Eco factor actual value
p1350
U/f control soft starting
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