BONFIGLIOLI ACTIVE CUBE 201 Operating Instructions Manual page 243

The output of the first PT1 element is connected to the input of the second PT1 element which
contains the thermal time constant of the motor. This output may be loaded at 100% permanently.
This corresponds to full thermal loading of the motor. Once 102% are reached, the inverter will shut
down and an error will be reported. Both outputs are linked to an adjustable Warning Threshold.
Operation Mode 571
I²t, Single-Motor,
42 -
Err.Sw.-Off
I2t,Multi-Motor
51 -
Op.,Warning
I2t,Single-Motor
52 -
Op.,Warning
I²t,Multi-Motor
61 - Op.,Warning and
Err.Sw.-Off
I²t,Single-Motor
62 - Op.,Warning and
Err.Sw.-Off
The thermal time constant for the motor is in the range between a couple of minutes and several
hours. This motor-specific parameter is set via
The thermal time constant of the stator is much smaller. To protect the stator winding, additional
monitoring is required and defined via the
values, refer to the relevant motor datasheets. If time constants are estimated, optimum motor
protection cannot be guaranteed.
12/16
The I²t load of the motor is monitored via the rated values from the
active data set. Once the fixed error threshold of 100%
) is exceeded, there will be an error shutdown "F0401" by the
Stator
active data set.
In each of the four data sets, the I²t load of the motors is monitored
based on the corresponding rated values. Once the set
615 is reached, a warning "A0200" will be triggered by the active
I2t
data set.
The I²t load of the motor is monitored via the rated values from the
active data SE. Once the set
warning "A0200" will be triggered by the active data set.
In each of the four data sets, the I²t load of the motors is monitored
based on the corresponding rated values. Once the set
615 is reached, a warning "A0200" will be triggered. Once the
I2t
fixed error threshold of 100%
be an error shutdown "F0401". Both events will be triggered by the
active data set.
The I²t load of the motor is monitored via the rated values from the
active data SE. Once the set
warning "A0200" will be triggered. Once the fixed error threshold of
100% (120%
Motor Stator
"F0401". Both events will be triggered by the active data set.
Thermal time constant motor
Thermal time constant stator
Operating Instructions ACU
Function
Warning Limit I2t
(120%
Motor Stator
Warning Limit I2t
) is exceeded, there will be an error shutdown
609. For the time constant
(120%
Motor
Warning Limit
615 is reached, a
Warning Limit
) is exceeded, there will
615 is reached, a
608.
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