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A U TO M AT I C C O N T R O L U N I T, O M D 8 0 0
7.2.2
Display
The display is a graphic display with following menu pages:
7.2.2.1
Default page
From default page the user can monitor following statuses:
•
Status of the change-over switch
•
Status of the monitored lines
•
Status of the generator
•
Status of the secondary load
•
Status of the Modbus Local/Remote parameter
•
Name and residual value of delay times
Line 1 and Line 2 statuses are shown as a graphic picture, where graphic LEDs and a specific line status
code indicate the status of the lines. When the LED is ON, there is voltage on the line and no status code
is shown. In the case of an anomaly, the LED is OFF and the status code indicates what is at fault. Status
codes are defined in the Table 7.2.
Code
Status of the line
1
No voltage
2
Undervoltage
3
Overvoltage
4
Phase missing
5
Voltage unbalance
6
Incorrect phase sequence
7
Invalid frequency
Table 7.2
Line status codes
LN1
LN2
LN1: 1
0.0 V
0.0 Hz
LN2: 1
0.0 V
0.0 Hz
Figure 7.4
The Default pages show the status of the change-over switch and the monitored lines
When the generator is started, the letter G and the "arrow up" symbol are shown on the default page.
When the generator is stopped, the letter G and the "arrow down" symbol are shown on the default
page. If the letter G is blinking on the default page, there is an active generator alarm. When the gener-
ator is not used, there is no symbol on the default page. Generator Usage, see Section 7.2.2.3.
LN1
LN2
LN1: 1
0.0 V
0.0 Hz
LN2:
230.0 V
50.0 Hz
Figure 7.5
The Default pages show the status of the generator; started or stopped
Explanation
Value of voltage on the line is under 10% of the Rated
Voltage
Value of voltage is under defined settings
Value of voltage is over defined settings
There is one or more phases missing
Difference between lowest and highest phase voltage is
higher than defined setting
Order of phases is incorrect
Value of frequency is out of defined settings
LN1
L
LN1
G
L
LN2
LN1:
230.0 V
50.0 Hz
LN2: 1
0.0 V
0.0 Hz
L
LN2
LN1:
230.0 V
50.0 Hz
LN2: 1 G
0.0 V
0.0 Hz
L
LN1
LN2
LN1: 1
0.0 V
0.0 Hz
LN2:
230.0 V
50.0 Hz
29
L
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