Table 5:Configuration of the communication parameters using the serial number�
Modbus Address
Variable
Valid data margin
0BB8, 0BB9
Device serial number
0
to
FFFFFFFF
(N)
0BBA Hi
Peripheral number
0
to
FF
(P)
0BBB Low
Port speed
0:
9600,
1:
19200 (V)
Example of a write command:
Changing the peripheral number. From 03 (3 decimal) to 0F (15 decimal), at 9600 bps.
TX
: 00 10 0BB8000306
4C4B4001 0F 00
CRC
RX
: Time Out
4�4�2�- CONFIGURATION OF THE TRANSFORMATION RATIOS
The
CVM-NET4+-MC
can perform indirect measurements (using voltage and current transformers).
For this reason, it has an input table to set the voltage and current transformation ratio configuration.
If the voltage measurement is performed directly, the ratio is 1/1.
Table 6:Configuration of Channel 1 transformation ratios�
Channel 1 (C1) transformation ratios
Modbus Address
Variable
Valid data margin
2710, 2711
Voltage primary
0
to
0001 86A0
(100000)
2712
Voltage secondary
0
to
03E7
(999)
2713
Primary of Channel 1 Three-phase
0
to
7530
(30000)
2B20
Primary of Channel 1 1S1 Single-phase
0
to
7530
(30000)
2B21
Primary of Channel 1 2S1 Single-phase
0
to
7530
(30000)
2B22
Primary of Channel 1 3S1 Single-phase
0
to
7530
(30000)
Example of programming voltage ratios;
Forward voltage measurement (230 P-N), and current transformers with primary ratio of 400 A.
Voltage Primary: 1(Dec) → 00000001 (Hex)
Voltage Secondary: 1(Dec) → 0001 (Hex)
Current Primary: 400 (Dec) → 0190 (Hex)
TX:
NP 10 2710000408 0000 0001 0001 0190 CRC
RX:
NP 10 2710000408 CRC
Table 7:Configuration of Channel 2��� 4 transformation ratios
Channel 2��� 4 transformation ratios
Modbus
Address
Variable
Valid data margin
271 A
Primary of Channel 2 Three-phase
0
to
7530
(30000)
2724
Primary of Channel 3 Three-phase
0
to
7530
(30000)
272E
Primary of Channel 4 Three-phase
0
to
7530
(30000)
2B2A
Primary of Channel 2 1S1 Single-phase
0
to
7530
(30000)
2B2B
Primary of Channel 2 2S1 Single-phase
0
to
7530
(30000)
2B2C
Primary of Channel 2 3S1 Single-phase
0
to
7530
(30000)
13
Instruction Manual
CVM-NET4+-MC
Summary of Contents for CVM-NET4+-MC
Page 1: ...INSTRUCTION MANUAL M056B01 03 21A Power analyzer CVM NET4 MC...
Page 2: ...2 CVM NET4 MC Instruction Manual...
Page 32: ...35 5 5 25 44 65 45 65 90 105 Figure 7 CVM NET4 MC dimensions 32 CVM NET4 MC Instruction Manual...
Page 34: ...8 CE CERTIFICATE 34 CVM NET4 MC Instruction Manual...
Page 35: ...35 Instruction Manual CVM NET4 MC...
Page 36: ...36 CVM NET4 MC Instruction Manual...
