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AUTOM ATIC CONTROL U N IT, OM D8 0 0
Voltage Thresholds
User can set separately Line 1 and Line 2 voltage thresholds both minimum and maximum values.
Factory settings are min -20 % and max +20 %. On the Table 7.8 are shown values, which are valid when
auxiliary power supply (AUX) is not used. Values of the Voltage Threshold Max LN1 and Voltage
Threshold Max LN2 are also used as the voltage unbalance level.
Voltage Tresholds
Volt Treshold Min LN2
Volt Treshold Max LN1
Volt Treshold Max LN2
4/4
A0
7152
Voltage Tresholds
Volt Treshold Min LN1
Volt Treshold Min LN2
Volt Treshold Max LN1
1/4
K
A0027
4
Figure 7.30
Voltage Thresholds (min and max) settings for Line 1 and Line 2
Voltage Tresholds
Volt Treshold Min LN1
Volt Treshold Min LN2
Volt Treshold Max LN1
1/4
K
A0027
4
Volt Treshold Min LN1
–20 %
K
A00
330
Cancel
Edit
OK
Voltage Tresholds
Volt Treshold Min LN1
Volt Treshold Min LN2
Volt Treshold Max LN1
3/4
A0
7151
Volt Treshold Max LN1
+20 %
K
A00
331
Cancel
Edit
OK
Figure 7.31
Voltage Threshold LN1, factory settings: min -20%, max 20%
Device Configuration
Digital Inputs
Digital Outputs
Voltage Tresholds
3/12
A0
7148
3 phases
Voltage / V
Voltage threshold
Min
Max
100/57
115/66
120/70
-20 %
-30 %
-30 %
+30 %
+30 %
+30 %
208/120
220/127
230/132
-30 %
-30 %
-30 %
+30 %
+30 %
+30 %
240/138
277/160
347/200
-30 %
-30 %
-30 %
+30 %
+30 %
+30 %
380/220
400/230
415/240
-30 %
-30 %
-30 %
+30 %
+30 %
+30 %
440/254
480/277
-30 %
-30 %
+30 %
+20%
Table 7.8
Values for Voltage Thresholds suitable for different Rated Voltages in 3 phases and 1
phase system.
1 phases
Voltage / V
Voltage threshold
Min
Max
208/120
220/127
230/132
-20 %
-20 %
-25 %
+30 %
+30 %
+30 %
240/138
277/160
347/200
-30 %
-30 %
-30 %
+30 %
+30 %
+30 %
380/220
400/230
415/240
-30 %
-30 %
-30 %
+30 %
+30 %
+30 %
440/254
480/277
-30 %
-30 %
+30 %
+20 %
If the AUX is used, Min is -30 % and Max is according to this table.
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