Nord Drivesystems SK 510P, Руководство с инструкциями по установке

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5 Parameter
BU 0600 en-3221 167
P525 … P529 Load monitoring
With load monitoring, a range can be specified within which the load torque may change
depending on the output frequency. There are three auxiliary values for the maximum
permissible torque and three auxiliary values for the minimum permissible torque. A
frequency is assigned to each of these auxiliary values. No monitoring is carried out
below the first and above the third frequency. In addition, monitoring can be deactivated
for minimum and maximum values. As standard, monitoring is deactivated.
The time after which a fault is triggered can be set with parameter ( P528 ). If the
permissible range is exceeded
(Example diagram: Infringement of the area marked in
yellow or green
), the error message E12.5 is generated if parameter P529 does not
suppress triggering of an error.
A warning C12.5 is always given after the elapse of half of the set error triggering time
P528 . This also applies if a mode is selected for which no fault message is generated.
If only a maximum or minimum value is to be monitored, the other limit must be
deactivated or must remain deactivated. The torque current and not the calculated
torque is used as the reference value. This has the advantage that monitoring outside
of the "field weakened range" without servo mode is usually more accurate. Naturally
however, it cannot display more than the physical torque in the weakened field range.
All parameters depend on parameter sets. No differentiation is made between motor
and generator torque, therefore the value of the torque is considered. As well as this,
there is no differentiation between "left" and "right" running. The monitoring is
therefore independent of the prefix of the frequency. There are four different load
monitoring modes
P529 .
The frequencies and the minimum and maximum values belong together within the various
array elements. The frequencies do not need to be sorted according to their magnitude in
elements 0, 1 and 2. This is performed automatically by the frequency inverter.