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Device handbook SIRAX BM1450
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4.3.3 Measurement Reading Screens
In normal operation the user is presented with one of the measurement reading screens out of several screens. These screens may be scrolled
through one at a time in incremental order by pressing the “ UP” key and in decremental order by pressing “ DOWN” key.
Example of a current display with the following values:
Channel 1: 10 A
Channel 2: 20000 A (20 x 10
3
)
Channel 3: 300 A
Channel 4: Overload condition
For channels 1 and 2, the LEDs light up green, so these channels
are in the normal state (good condition).
For channel 3, the LED lights up red and a measured value is
displayed. This means that a limit relay is used on this channel
and an alarm state is present.
For channel 4, the LED lights up red and -OL- is displayed on the
display. This means that the measured value is above the nominal
value on this channel.
Example of a power display with the following values:
Channel 1: 10 W
Channel 2: 20000000 W (20 x 10
6
)
Channel 3: 300000 W (300 x 10
3
)
Channel 4: Overload condition
For channels 1 and 2, the LEDs light up green, so these chan-
nels are in the normal state (good condition).
For channel 3, the LED lights up red and a measured value is
displayed. This means that one of the following conditions exists:
1. On this channel there is a limit relay and the alarm state is
given
2. Voltage and current values are in overload condition
Power import indicator
Display Overload condition Energy import
Shown above are the import energy screens. The display of the meter can only accommodate 8 digits. So to display more than 8 digit energy, an
overflow screen is added. When the energy reaches the energy digit reset count, it starts the count from 0 again. When this happens the corres-
ponding overflow is increased by 1. The maximum value of the overflow is 2000 for individual channels. Thus the highest energy that the meter
can show is 200099999999 Mwh. To obtain the value for current energy reading, the user need to multiply the overflow count by 10 raised to
energy digit reset count for the corresponding channel and add the result in displayed energy reading.
Channel 1: [(100 x 10
8
) + 5030] = 10000005030 Wh
Channel 2: [(28 x 10
7
) + 14800] = 280014800 Wh
Channel 3: [(8 x 10
6
) + 250000] = 8250000 kWh
Channel 4: [(24 x 10
8
) + 4300] = 2400004300 MWh
