Notes Regarding Parameterization - Siemens Vector Control Operating Instructions Manual

Parameterizing Steps
9.5

Notes regarding parameterization

Reference quantities
Speed and
frequency reference
values
9-60
The parameter im Kompendium list covers the setting parameters and
visualization parameters of all available motor types (induction motors
and synchronous motors), as well as all possible open-loop and closed-
loop control modes (e.g. V/f characteristic, speed control).
The constellation under which this parameter is influenced or whether it
is displayed at all is indicated under "Preconditions" in the parameter
description.
Unless otherwise specified, all percentage values refer to the reference
quantities in P350 to P354.
If reference quantities are changed, this will also change the
significance of the parameters with percentage normalization
(e.g. P352 = Maximum frequency).
Reference variables are intended as an aid to presenting setpoint and
actual value signals in a uniform manner. This also applies to fixed
settings entered as a "percentage". A value of 100 % corresponds to a
process data value of 4000h, or 4000 0000 h in the case of double
values.
All setpoint and actual value signals (e.g. set speed and actual speed)
refer to the physically applicable reference variables. In this respect, the
following parameters are available:
P350 Reference current
P351 Reference voltage
P352 Reference frequency
P353 Reference speed
P354 Reference torque
In quick parameterization mode and in automatic parameter
assignment mode (P115 = 1(2,3)), these reference variables are set to
the motor ratings. In case of automatic parameter assignment, this
occurs only if the "Drive setting" converter status is activated.
The reference speed and reference frequency are always connected by
the pole pair number.
60
= ×
P353 P352
P109
If one of the two parameters is changed, the other is calculated using
this equation.
Since this calculation is not made on download (see section 9.2.3),
these two quantities must always be loaded in the correct relationship.
If the setpoint and actual control signals are related to a desired
reference speed in rpm, P353 must be set accordingly (P352 is
calculated automatically). If a rotational frequency in Hz is to be used
as the reference (calculated using the pole pair number P109), P352
must be set.
in A
in V
in Hz
in rpm
in Nm
6SE7087-2JD60
Operating Instructions SIMOVERT MASTERDRIVES
05.2006
Siemens AG