ABB ACS880 Series, Руководство по прошивке

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Def / Type
FbEq 16b / 32b Description Name / Range /
Selection No.
Fixed limit / unit32 Selects the type of limit used for underload supervision.
The user has option to choose either a fixed limit, a
curve of a predefined shape or plot a custom curve as
a function of motor speed. Underload limit type 79.11
1 Fixed limit is a constant value for all the speeds. Fixed limit
2 Underload limit is calculating by formula.
I
lim
= I
set
* (F
act
/ F
max
)
Where,
I
lim
= 79.80 Underload actual limit
I
set
= 79.13 Underload limit
F
max
= 79.09 Load limit speed scale
F
act
= Actual speed
Linear
3 Underload limit is calculated by using the formula:
I
lim
= I
set
* (F
act
/ F
max
)
2
Where,
I
lim
= 79.80 Underload actual limit
I
set
= 79.13 Underload limit
F
max
= 79.09 Load limit speed scale
F
act
= Actual speed
Quadratic
4 Underload limit depends on the user input load curve,
actual speed/frequency and Underload supervision
input. User curve
Motor current % /
unit32 Defines the source for the supervision signal used in
the underload protection. Underload
supervision signal 79.12
0 Zero NULL
1 12.12 AI1 scaled value (page 226) . AI1 scaled
2 12.22 AI2 scaled value (page 228) . AI2 scaled
3 3.5 FB A reference 1 (page 179) . FB A ref1
4 3.6 FB A reference 2 (page 179) . FB A ref2
5 3.9 EFB reference 1 (page 179) . EFB ref1
6 3.10 EFB reference 2 (page 179) . EFB ref2
7 Parameter 9.13 Motor current estimated . Estimated motor
current
8 Estimated motor current in % of nominal motor current. Motor current %
See Terms and abbreviations (page 169) . Other [value]
0.00 / real32 Defines underload limit value.
Note: This parameter is not applicable in case User
curve is selected for the underload curve shape in
parameter
79.11 Underload limit type .
Underload limit 79.13
10 = 1 / 100 = 1 Underload fixed limit. 0.00 ... 30000.00
Constant / unit32 Selects the type of underload delay time setting.
The user has option to choose between fixed and
floating delay calculation methods. Underload delay
type 79.17
0 Fixed constant value of the delay. Constant
538 Parameters