Settings; Stall Protection; Underload Protection; Motor Phase Loss - ABB ACS800 Series Firmware Manual

Settings

Parameters 30.04...30.09.
Note: It is also possible to use the motor temperature measurement function. See
subsection Motor temperature measurement through the standard I/O
and Motor temperature measurement through the analog I/O extension

Stall Protection

The drive protects the motor in a stall situation. It is possible to adjust the
supervision limits (torque, frequency, time) and choose how the drive reacts to a
motor stall condition (warning indication / fault indication and stop the drive / no
reaction).
The torque and current limits, which define the stall limit, must be set according to
the maximum load of the used application.
When the application reaches the stall limit and the output frequency of the drive is
below the stall frequency: Fault is activated after the stall time delay.
Settings
Parameters 30.10...30.12.
Parameters 20.03,

Underload Protection

Loss of motor load may indicate a process malfunction. The drive provides an
underload function to protect the machinery and process in such a serious fault
condition. Supervision limits - underload curve and underload time - can be chosen
as well as the action taken by the drive upon the underload condition (warning
indication / fault indication and stop the drive / no reaction).
Settings
Parameters 30.13...30.15.

Motor Phase Loss

The Phase Loss function monitors the status of the motor cable connection. The
function is useful especially during the motor start: the drive prevents the motor from
starting if it detects a missing motor phase. The Phase Loss function also supervises
the motor connection status during normal operation.
Settings
Parameter 30.16.
30.13 and 20.14 (Define the stall limit.)
39
on page 44
on page 46.
Program features