ABB ACS280, Руководство по прошивке, Страница: 77 / 430

Program features 77
Temperature monitoring using Pt100 sensors
1…3 Pt100 sensors can be connected in series to an analog input and an analog
output.
The analog output feeds a constant excitation current of 9.1 mA through the
sensor. The sensor resistance increases as the motor temperature rises, as
does the voltage over the sensor. The temperature measurement function
reads the voltage through the analog input and converts it into degrees Celsius.
It is possible to adjust the motor temperature supervision limits and select how
the drive reacts when overtemperature is detected.
For the wiring of the sensor, see the
Hardware manual of the drive.
Settings and diagnostics
Parameter group
35 Motor thermal protection
(page
210
).
Events: -

Automatic fault resets
The drive can automatically reset itself after overcurrent, overvoltage,
undervoltage and external faults. The user can also specify a fault that is
automatically reset.
By default, automatic resets are off and must be specifically activated by the
user.
WARNING! Before you activate the function, make sure that no dangerous
situations can occur. The function resets the drive automatically and
continues operation after a fault.
Settings and diagnostics
Parameters
31.12
…
31.16
.
Events: -

Other programmable protection functions
External events (parameters 31.01 … 31.10 )
Five different event signals from the process can be connected to selectable
inputs to generate trips and warnings for the driven equipment. When the
signal is lost, an external event (fault, warning, or a mere log entry) is generated.