BONFIGLIOLI Vectron AEC 401 Series, Operating Instructions Manual

Page: 73 / 90

11/17 Operating Instructions AEC 73
10 Error and warning behavior
Operation of the AEC and the connected load are monitored continuously. The monitoring functions are to
be parameterized with the corresponding limit values specific to the application. If the limits were set below
the switch-off limit of the frequency inverter, an error switch-off can be prevented by suitable measures if
a warning message is issued.
The warning message is displayed by the LED's and can be read out on the operating unit via parameter
Warnings
269 or output via one of the digital control outputs.
Some of the parameters described in the following are only available in one of the two
operating modes (mains unit or feed-back unit). For more information, refer to “List of
parameters”.
10.1 Overload Ixt
The admissible load behavior depends on various technical data of the devices and the ambient conditions.
The selected
Switching Frequency
400 defines the nominal current and the available overload for one
second and sixty seconds, respectively. The
Warning Limit Short Term Ixt
405 and
Warning Limit Long
Term Ixt
406 are to be parameterized accordingly.
Parameter Setting
No. Description Min. Max. Factory setting
405 Warning Limit Short Term Ixt 6% 100% 80%
406 Warning Limit Long Term Ixt 6% 100% 80%
Output signals
Reaching of warning limits is reported via digital signals.
165 - Warning Ixt 1)
Warning Limit Short Term Ixt
405 or
Warning Limit Long Term Ixt
406
was reached.
7 - Ixt warning 2)
1) For linking to device functions 2) For output via a digital output
10.2 Temperature
The ambient conditions and the energy dissipation at the current operating point result in the frequency
inverter heating up. In order to avoid a fault switch-off of the frequency inverter, the Warning
Limit Tk
407
for the heat sink temperature limit and the
Warning Limit Ti
408 as an internal temperature limit are to
be parameterized. The temperature value at which a warning message is output is calculated from the type-
dependent temperature limit minus the adjusted warning limit.
The switch-off limit of the frequency inverter for the maximum temperature is an internal temperature of
65 °C and a heat sink temperature of 80°C – 90°C.
Parameter Setting
No. Description Min. Max. Factory setting
407 Warning Limit Heat Sink Temp. -25 °C 0 °C -5 °C
408 Warning Limit Inside Temp. -25 °C 0 °C -5 °C
Minimum temperatures are defined as -10 °C (interior) and 30 °C for the heat sink
temperature.