6. Protection Functions and Directions
EM-GS User's Manual
18
FA code
0:Basic
protection
1:Light-load
protection
2:Standard
protection
3:Heavy-load
protection
4:Superior
protection
Note
The grade of
overload
protection
No
2 grade
10 grade
20 grade
10 grade
Standard of
IEC60947-4-2
The grade of
over-current
protection
No
3 Second
15 Second
30 Second
15 Second
The 5 times of
F6
current
Overload
drop-away time
The multiple to
the rated
current
3
4
5
3
4
5
3
4
5
3
4
5
They are the
typical values
Drop-away
time (S)
4.5 2.2 1.5 23 12 7.5 46 23
15 23 12 7.5
Diagram 6.1 (IEC60947-4-2 standard) Motor heat protection curve (overload drop-away time)
Remark:
FP
set value should be same as motor nameplate rated current.
The
FP
set value should not be less than 20% of soft starter rated current, otherwise the overheat protection will be
useless because of big tolerance.
