Overload Protection Type; Overload Protection Class - ABB PST30 Installation And Commissioning Manual

Chapter 10
Functions
Time (s)
1000
100
10
1
1 2 3
Figure 13: Tripping curves for the
electronic overload
A Class 30
B Class 20
C Class 10
D Class 10A
140

10:17 Overload protection type

Parameter
text
Overload

10:18 Overload protection class

A
B
C
D
4 5 6
Current (x I )
e
Parameter
text
OL Class
Path in menu:
Menu/SETTINGS/Functional Settings/
Protections/Overload
This parameter makes it possible to set the required function
of the integrated motor overload protection. Too high motor
temperature causes a stop of the motor and a reset is
necessary before a restart is possible.
The motor overload protection has three different modes:
The protection is not activated.
No
The protection is in normal operation.
Normal
The protection has two classes, one during
Dual
start and another during continuous run.
Default value Setting range
Normal
The motor temperature with time marking is stored for two
hours after power loss.
Path in menu:
Menu/SETTINGS/Functional Settings/
Protections/Overload/OL Class
This parameter makes it possible to set the required class of
the motor overload protection. Four different classes are
available according to figure 13.
• Class 10A
• Class 10
• Class 20
• Class 30
Default value Setting range
10
Description
No, Normal, Dual Overload protec-
tion
Description
10A, 10, 20, 30 Overload class
1SFC132003M0201