Doc. name : OP INST MFM376 SERIES OP506-V02(Page 3 of 4)
Meaning
Constant
Parameter
30102
30100
0x66
0x64
Run Hour
Auxillary Interrupts
Total Harmonic Distortion(THD)
30124
0x7C
THD of Voltage V1N
MFM376-230VAC / MFM376-C
Pulse output from
meter can be interfaced into a process through a PLC for
on line control of energy content in the process.
If the PLC has a self excited digital input, external
DC supply is not needed.
The kWh pulse is also used to derive average kWh
information at the PLC.
PROCESS INTEGRATION
MFM376-230VAC / MFM376-C
Pulse output from
meter can be used as alarm generator or total energy
controller by interfacing it with Pre-settable counter and
control circuits (Contactors, Relay, Trip Circuit).
The counter is loaded with the maximum energy
consumption. When count reaches setpoint it provides
output to control circuit to take appropriate action.
ENERGY CONTROLLER
APPLICATION OF PULSE OUTPUT
Note :
+ and - is applicable only for MFM376-C.
12 / 24V DC
+
To
Control
Circuit
COUNTER
+
I/P
O/P
S2
S1
S2
S1
S2
S1
V1
N
V2
V3
I
1
I
2
I
3
MFM376-230VAC /
MFM376-C
PULSE
O/P
+
N
L
RS485
+
+
S2
S1
S2
S1
S2
S1
V1
N
V2
V3
I
1
I
2
I
3
MFM376-230VAC /
MFM376-C
PULSE
OUTPUT
+
24V DC
maximum
P
L
C
+
N
L
RS485
+
+
Valid only for
MFM376-C
Valid only for
MFM376-C
MODBUS REGISTER ADDRESSES LIST
Readable parameters for Communication valid only for MFM376-C : [ Length (Register) : 2 ; Data Structure : Float ]
30074
0x4A
30076
30078
0x4C
0x4E
MAX Instantaneous voltage V31
MAX Instantaneous voltage V12
MAX Instantaneous voltage V23
30072
0x48
30068
0x44
30064
0x40
30070
0x46
30066
0x42
MAX Instantaneous voltage V3N
MAX Instantaneous voltage V1N
MIN Reactive Power
MAX Instantaneous voltage V2N
MAX Apparent Power
30050
0x32
Frequency
Total KW
Total KVAR
Total KVA
30052
0x34
30054
0x36
30056
0x38
30058
0x3A
MAX Active Power
30060
0x3C
MIN Active Power
30062
0x3E
MAX Reactive Power
30048
0x30
Average PF
Address Hex Address
Parameter
30046
0x2E
PF 3
30000
30002
30004
30006
30008
30010
30012
30014
30016
30018
30020
30022
30024
30026
30028
30030
30032
30034
30036
0x00
0x02
0x04
0x06
0x08
0x0A
0x0C
0x0E
0x10
0x12
0x14
0x16
0x18
0x1A
0x1C
0x1E
0x20
0x22
0x24
Voltage V1N
Voltage V2N
Voltage V3N
Average Voltage LN
Voltage V12
Voltage V23
Voltage V31
Average Voltage LL
Current I1
Current I2
Current I3
Average Current
kW1
kW2
kW3
kVAr1
kVAr2
kVAr3
kVA1
30038
0x26
kVA2
30040
0x28
kVA3
30042
0x2A
PF 1
30044
0x2C
PF 2
30080
0x50
MAX Instantaneous current I1
30082
0x52
MAX Instantaneous current I2
30084
0x54
MAX Instantaneous current I3
30086
0x56
Import Active energy
30088
0x58
Export Active energy
30090
0x5A
Total Active energy
30092
0x5C
Import Reactive energy
30094
0x5E
Export Reactive energy
30096
0x60
Total Reactive energy
30098
0x62
Total Apparent energy
Address Hex Address
Parameter
30128
30130
30132
30134
0x80
0x82
0x84
0x86
30136
30138
30140
0x88
0x8A
0x8C
THD of Voltage V3N
THD of Voltage V12
THD of Voltage V23
THD of Voltage V31
THD of Current I1
THD of Current I2
THD of Current I3
30684
0x2AC
Serial number of unit
Formula to find address of individual Harmonic
Voltage V1N
Voltage V2N
Voltage V3N
Voltage V12
Voltage V23
Voltage V31
Current I1
Current I2
Current I3
0
1
2
3
4
5
6
7
8
For Example,
To find the 14 Harmonic address
of Voltage V31.
Following formula can be used :
Formula with the parameter :
{143 + [(Harmonic no-2) x 2]
+ 60 x C P}
Eg. {143 + [(14-2) x 2 ] + 60 x 5}
= 467
So, Check the 14 Harmonic of
Voltage V31 at 467 address.
th
th
{143 + [(Harmonic no-2) x 2]
+ 60 x Constant Parameter }
30126
0x7E
THD of Voltage V2N
Integer
Integer
1
1
1
1
Set to factory setting range
Reset Total Active Energy
Integer
1
1
Reset Total Apparent Energy
Integer
Integer
Integer
Integer
1
1
1
1
1
1
1
1
Reset Total Reactive Energy
Reset Maximum Demand
Reset Run Hour
Reset Auxillary Interrupt Count
40017
40018
0x11
0x12
Factory Default
Reset kWh
40019
0x13
Reset kVAh
40020
40021
40022
40023
0x14
0x15
0x16
0x17
Reset kVArh
Reset MAX Demand
Reset Run Hour
Reset Interrupts Count
Min value : 0
Max value : 9998
Value : 0
Value : 1
Value : 2
Value : 3
Value : 4
Meaning : 3P-4W
Meaning : 3P-3W
Meaning : 1P2W-P1
Meaning : 1P2W-P2
Meaning : 1P2W-P3
Integer
Integer
Integer
Integer
Integer
Integer
1
1
1
1
1
1
40000
40001
0x00
0x01
Password
N/W selection
Range
Data
Structure
Length
(Register)
Address
Parameter
Hex Address
Readable / writable parameters for
:
Communication valid only for MFM376-C
0x0005
0x0006
9600
19200
Min Value : 5
Min Value : 1
Min Value : 100
Min Value : 100
Max Value : 10000
Max Value : 10000
Max Value : 500
Max Value : 500000
Integer
Integer
Integer
1
1
2
Integer
Integer
Integer
1
1
1
Value : 0x0000
Value : 0x0001
Min Value : 1
Meaning : Sliding
Meaning : Fixed
Max Value : 30
40003
40004
40005
0x03
0x04
0x05
CT primary (CT Secondary = 5) (A)
CT primary (CT Secondary = 1) (A)
PT Secondary (V)
PT primary (V)
Demand Interval Method
Demand Interval Length(min)
0x07
0x08
40007
40008
Integer
1
0x0000
300
0x0001
600
0x0002
1200
0x0003
2400
0x0004
4800
Min Value : 1
Min Value : 0
Max Value : 5
Max Value : 10
Integer
Integer
1
1
40002
40012
0x02
0x0C
CT Secondary (A)
Run Hour Selection
Integer
1
Min Value : 1
Min Value : 0.01
Max Value : 30
Demand Interval Duration
0x09
40009
Integer
1
Max Value : 99.99
Pulse Weight
0x0A
40010
Min Value : 0.1
Integer
1
Max Value : 2.0
Pulse Duration
0x0B
40011
Integer
1
Min Value : 1
Max Value : 255
Slave ID
0x0D
40013
Baud rate
0x0E
40014
Integer
Integer
1
0x0000
0x0001
1
2
1
0x0000
0x0001
0x0002
None
Odd
Even
40015
0x0F
Parity
Stop bit
Value
Meaning
0x10
40016
