July 2013 6.11 Monitoring functions 911
Commissioning and
evaluation
In MP2302.x, enter the factor for the I
2
t monitoring of the motor. The input
value is a factor for the reference current (1 = 100% of the motor’s standstill
current or rated current). If you enter zero, the I
2
t monitoring for the motor
(not for the power module) is switched off. If you enter a value less than 1,
then a motor standstill current or rated current (reference current) reduced
by this factor is used for calculation. The actual current is rated higher by this
factor relative to the reference current, and the I²t value is increased more
quickly. This means that the results for values less than 1 provide increased
protection for the motor. Values greater than 1 provide less protection for
the motor.
In MP2304.x, enter the factor for I
2
t monitoring of the power module. The
input value is a factor of the power module’s rated current (1 = 100%). If you
enter zero, the I
2
t monitoring for the power module (not for the motor) is
switched off. If you enter a value less than 1, then a power module current
or rated current (reference current) reduced by this factor is used for
calculation. The actual current is rated higher by this factor relative to the
reference current, and the I²t value is increased more quickly. This means
that the results for values less than 1 provide increased protection for the
power module. Values greater than 1 provide less protection for the power
module.
All required entries for calculation of a temperature model have to be
available in the motor table or power module table. See "Temperature
models" on page 914.
Use Module 9160 to interrogate the I
2
t monitoring, see "Interrogation
through PLC module" on page 913.
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