Reference Quantities; P383 Mot Tmp T1; Thermal Time Constant Of The Motor - Siemens 6SE7011-5EP60 Operating Instructions Manual

05.2003

P383 Mot Tmp T1

Reference quantities

Speed and
frequency reference
values
Siemens AG 6SE7087-6JP60
SIMOVERT MASTERDRIVES
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The selection of setpoint sources (P368) may be restricted by the type
of factory setting (P366).
Factory setting P366
0 = PMU
1 = OP1S
2 = Cabinet unit OP1S
3 = Cabinet unit PMU

Thermal time constant of the motor

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 6.2.2),
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.
Operating Instructions
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Setpoint source P368
0 ... 8 = All sources possible
7 = OP1S
7 = OP1S
0 = PMU
8 = OP1S
in A
in V
in Hz
in rpm
in Nm
Industry Automation
Parameterizing Steps
9-9
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