NORDAC BASE (SK 180E / SK 190E) – Users Manual for Frequency Inverters
96
BU 0180 en-4118
P105
Maximum frequency
(Maximum frequency)
P
0.1 ... 400.0 Hz
The frequency supplied by the FI after being enabled and once the maximum setpoint is present,
e.g. analogue setpoint corresponding to P403, a correspondingly fixed frequency or maximum via
the SimpleBox / ParameterBox.
This frequency can only be overshot by the slip compensation (P212), the function "Maintain
frequency" (function digital input = 9) or a change to another parameter set with lower maximum
frequency.
Maximum frequencies are subject to certain restrictions, e.g.
• Restrictions in weak field operation,
• Compliance with mechanically permissible speeds,
• PMSM: Maximum frequency restricted to a value that is slightly above the nominal frequency.
This value is calculated from the motor data and the input voltage.
P106
Ramp smoothing
(Ramp smoothing)
P
0 ... 100 %
{ 0 }
This parameter enables a smoothing of the acceleration and deceleration ramps. This is
necessary for applications where gentle, but dynamic speed change is important.
Ramp smoothing is carried out for every setpoint change.
The value to be set is based on the set acceleration and deceleration time, however values <10%
have no effect.
The following then applies for the entire acceleration or deceleration time, including rounding:
[ ]
100%
%
P106
t
t
t
P102
P102
TIME
ON
ACCELERATI
tot
⋅
+
=
[ ]
100%
%
P106
t
t
t
P103
P103
TIME
ON
DECELERATI
tot
⋅
+
=
P102
P103
Output
frequency
Setpoint
frequency
Time
Currently
10 – 100% from P102
Currently
10 – 100% from P103
Note:
Under the following conditions ramp rounding is switched off or replaced with a
linear ramp with extended times:
• Acceleration values (+/-) less than 1 Hz/s
• Acceleration values (+/-) greater than 1 Hz/ms
• Rounding values less than 10 %
Summary of Contents for SK 180E Series
Page 1: ...BU 0180 en NORDAC BASE SK 180E SK 190E Users Manual for Frequency Inverters...
Page 4: ...NORDAC BASE SK 180E SK 190E Users Manual for Frequency Inverters 4 BU 0180 en 4118...
Page 185: ...8 Additional information BU 0180 en 4118 185 8 3 4 EU Declaration of Conformity...
Page 211: ...Key word index BU 0180 en 4118 211...
Page 212: ...6071802 4118...
