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KFU 2-/4-
180
14.5.2 Comparator
With the help of software functions Comparator 1 and 2, various comparisons of ac-
tual values with percentage-adjustable fixed values can be done.
The actual values to be compared can be selected from the following table with the
parameters
Op. Mode Comparator 1
540
and
Op. Mode Comparator 2
543
.
If an extension module is connected, further operation modes are available.
Operation mode 540, 543
Function
0
-
Off
Comparator is switched off.
1
-
Absolute current
R.m.s Current
211
>
Rated Current
371
.
2
-
Abs. Active Current
Active current
214
>
Rated current
371
.
3
-
Abs. Stator Frequency
Stator frequency
210
>
Maximum fre-
quency
419
.
4
-
Abs. Actual Speed 1
Speed Sensor 2 Speed
220
> maximum speed
(calculated from
Maximum Frequency
419
and
No. of Pole Pairs
373
).
5
-
Abs. Actual Repetition Freq.
Repetition frequency input
252
>
Maximum
frequency
419
.
6
-
Winding Temp.,
Temp. Follow-Up.
Winding temperature
226
> tempera-
ture 100 °C
7
-
Abs. Actual Frequency
Actual frequency
241
>
Maximum fre-
quency
419
.
9
-
DC –Link Voltage
DC Link Voltage
222
> Direct voltage 1000 V.
10
-
Abs. Isq
Isq
216
>
Rated Current
371
.
11
-
Abs Filtered Active Current
Active current
214
>
Rated current
371
.
12
-
Abs. Internal Ref. Frequency
Internal Reference Frequency
228
>
Maximum
Frequency
419
.
13
-
Abs. Ref. Percentage Value
Reference Percentage Value
229
>
Maximum
Reference Percentage
519
.
14
-
Abs. Actual Percentage Val-
ue
Actual Percentage Value
230
>
Maximum
Reference Percentage
519
.
15
-
Abs. Analog Input MFI1A
Analog Input MFI1A
251
> input signal 100 %
100 to 107, 111, 112
Operation modes with signs (+/-).
The switch-on and switch-off thresholds for compactors 1 and 2 are set by the para-
meters
Comparator on above
541
,
544
and
Comparator off below
542
,
545
.
The percentage limits of the corresponding reference values are indicated.
Parameter
Settings
No.
Description
Min.
Max.
Fact. sett.
541 Comparator 1 On above
- 300.00 %
300.00 %
100.00 %
542 Comparator 1 Off below
- 300.00 %
300.00 %
50.00 %
544 Comparator 2 On above
- 300.00 %
300.00 %
100.00 %
545 Comparator 2 Off below
- 300.00 %
300.00 %
50.00 %