KEPID AMSTECH CO. LTD. EMU11A Manuale Utente
4. Software Interfaces
-42-
4.1.8 Scaling
factors
Current Range
5 A
20 A
50 A
100 A
Active Energy Wh [Interval]
64 16 6.4 3.2
Active Energy Wh [Counter]
8 2 0.8
0.4
Reactive Energy VARh [Interval]
64 16 6.4 3.2
Reactive Energy VARh [Counter]
8 2 0.8
0.4
Apparent Energy VAh [Interval]
64 16 6.4 3.2
Apparent Energy VAh [Counter]
8 2 0.8
0.4
Vrms
25 25 25 25
Irms
1200 300 120 60
Frequency
16 16 16 16
Active Energy Wh [Interval]
64 16 6.4 3.2
4.1.9 Energy
counters
Energy counters have the total consumed energy calculated by EMU. The reset
command resets the energy counters, the recording interval counters, and the on-going
interval accumulated values.
The time-stamp of the energy counters is written into the register when the data is sent
to EMG.
Energy counters will count positive for energy consumed, negative for energy
generated and pushed into the grid. Active, reactive, and apparent energy consumption
values are stored as 32-bit values, thus using 2 Modbus registers.
The lower register address contains the high word value (MSW: Most Significant Word)
and the high register contains the low word value (LSW: Least Significant Word).
Registers: 0 to 23.
0
1
16-bits 16-bits
MSW LSW