Underload Protection; Underload Protection Level - ABB PST Installation And Maintenance Manual

130
AC 1006.9 - 5/03
Chapter 10 - Functions

10:22 Underload protection

Path in menu:
Menu/SETTINGS/Functional Settings/
Protections/Underload
If the motor current falls below the set level and the set time when
the motor is running at full voltage, the protection is activated. The
protection starts monitoring when full voltage is applied to the motor.
Parameter
text
Underload
This protection could be used to avoid for example a pump running
dry or detecting a broken belt.

10:23 Underload protection level

Path in menu:
Menu/SETTINGS/Functional Settings/
Protections/Underload/Underl Lev
This parameter makes it possible to set the level of the underload
protection. It is active only if the underload protection is selected.
Parameter
text
Underl Lev
Default Setting
value range
No Yes, No
Default Setting
value range
0.8 x I 0.4... 0.8xI
e
Description
Underload
protection
Description
Trip level for
Underload
e
protection
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