Rish EM 3490 SS User manual

Single Phase Energy Meter
Installation & Operating Instructions
EM 3490 SS
1. Introduction
Ultra high brightness LED display.
Down Up
2. Measurement Reading Screen
In normal operation the user is presented with active energy measurement screen.
Screen 1 : Active Energy (kWh)
When x1000 LED glows the energy is displayed in mega watt.
Section Contents
1. Introduction
2. Measurement Reading Screen
4. Programming
4.1 Password Protection
4.2 Menu selection
4.2.1 System Parameter selection screen
4.2.2 Communication Parameter selection screen
4.2.3 Reset Parameter selection screen
4.2.4 Relay Output parameter selection screen
4.2.5 Quit screen
4.2.1.1 Potential transformer Primary value
4.2.1.2 Potential transformer secondary value
4.2.1.3 Current transformer Primary value
4.2.1.4 Energy Display on modbus
4.2.1.5 Energy Digit Rollover(reset) count
4.2.2.1 Address Setting
4.2.2.2 RS 485 Baud rate
4.2.2.3 RS 485 Parity selection
10. Specification
Installation
8.1 EMC Installation Requirements
8.2 Case Dimensions and Panel Cut-out
8.3 Wiring
8.4 Auxiliary Supply
8.5 Fusing
8.6 Earth / Ground Connections
9.
11. Connection for Optional Pulse output / RS 485
8.
Phaser Diagram
4.2.3.1 Resetting Parameter
4.2.4.1 Pulse Duration (width) selection
15000251_Rev.C - 12/ 08
7.
6. RS 485 (Modbus) Output
5. Relay Output (Optional).
4.2.4.2 Pulse rate divisor
The instrument is a panel mounted 96 x 96mm DIN Quadratic energy
meter. It accumulates Active energy, in single phase network.
The instrument also measures AC Voltage, AC Current, Frequency,
Power, Power factor, Phase Angle, Apparent Energy which can be accessed via
Modbus. All voltage & Current measurements are True RMS upto 15th harmonic.
Meter can be configured & Programmed at site
for the following :
PT Primary, PT Secondary, CT Primary, Modbus
Settings & Pulse output settings.
The front panel has two push buttons through
which the user can reset the energy & configure
the product.
The front panel has Impulse red led, flashing at
rate proportional to measured power.
Its impulse rate is 3600impulses/kWh.
6.1 User assignable Modbus Register
Network Wiring
5.1 Pulse Output
1
x1000
3600 Imp/KWh
kWh
x1000 kWh
VON IREV
3. Phase Indications
“LED Von glowing”
Voltage Phase present
x1000 kWh
VON IREV
“LED Von off”
Voltage phase absent
x1000 kWh
VON IREV
Measured Parameters
System Voltage
System Current
Frequency
Active Energy
Units of measurement
Volts
Amps
Hz
Wh
TABLE 1:
Apparent Energy
Active Power
Reactive Power
Apparent Power
Power Factor
Phase Angle
Kwatts
KVAr
KVA
Degree
VAh
Display Parameter
Active Energy (8 digit counter) kWh
Modbus Parameter
Active energy is displayed in 8 digit counter with auto ranging feature. Below given table
describes auto ranging with minimum resolution of energy measured in perticular range.
Display Format X1000 LED Minimum resolution
99.999999
999.99999
9999.9999
99999.999
999999.99
9999999.9
99999999
999999.99
9999999.9
99999999
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
1 miliWatt
10 miliWatt
100 miliWatt
1 Watt
10 Watt
100 Watt
1 kiloWatt
10 kiloWatt
100 kiloWatt
1 MegaWatt
Maximum Active energy count reached is 99999999 MegaWatt after this counter
rollovers to zero and measurement starts from first range.
3. Phase Indications
Impulse led on front panel can be used to cross check the energy calibration on site.
Its nominal impulse rate is 3600 impulses / kWh.
2
VON IREV
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
“LED IREV glowing”
Current out of phase w.r.t voltage .
x1000 kWh
VON IREV
“LED IREV off”
Current in phase w.r.t voltage
x1000 kWh
VON IREV
3600 Imp/KWh
3600 Imp/KWh
SEL (Select)
A
: UP KEY
: DOWN KEY
(Select Relay Parameter)
quit
(Exit Menu)
Exit from setup Parameter to Main Display
rESEt
(Reset Parameter)
non (No Parameter),
E (Energy),
“Down” key
SEriAL
(
Serial Communication
)
Add
(Modbus Address)
br
(Baud Rate)
Pr
(Parity Bits)
cd
(PassWord)
SEL
(Select System
Parameter) (Sec 4.2.2)
UP
(PT Primary)
US
(PT Secondary)
A
A
(Sec 4.2.1.1)
Setup Parameter Screen
(Sec 4.2.5)
Parameter
(Sec 4.2.2.1)
(Sec 4.2.2.2)
(Sec 4.2.2.3)
(Sec 4.2.3)
SYS
(Sec 4.2.1)
SEL
SEL
(Sec 4.2.4)
rELAY
SEL
dur
(Relay Pulse Duration)
rAt
(Pulse Rate Divisor)
(Sec 4.2.4.1)
(Sec 4.2.4.2)
AP
(CT Primary)
(Sec 4.2.1.3)
(Sec 4.2.1.2) (Sec 4.2.3.1)

4.1. Password Protection
Password protection can be enabled to prevent unauthorised access to set-up
screens, by default password protection is not enabled.
Password protection is enabled by selecting a four digit number other than 0000,
setting a password of 0000 disables the password protection.
4. Programming
The following sections comprise step by step procedures for configuring the
meter for individual user requirements.
To access the set-up screens press and hold the “
Key simultaneously for 5 seconds. This will take the User into the Password
Protection Entry Stage (Section 4.1).
Down” and “ Up”
Enter Password, second digit entered, prompt for third
digit.
(* Denotes that decimal point will be flashing).
Use the “ Down” key to scroll the value of the third
digit from 0 through to 9, the value will wrap from 9
round to 0.
Press the “ Up” key to advance to next digit.
Enter Password, third digit entered, prompt for fourth
digit.
(* Denotes that decimal point will be flashing).
Use the “ Down” key to scroll the value of the fourth
digit from 0 through to 9, the value will wrap from 9
round to 0.
Press the “ Up” key to advance to verification of the
password.
Enter Password, fourth digit entered, awaiting
verification of the password.
Password confirmed.
Pressing “ Down” key will advance to the “New /
change Password” entry stage.
Pressing the “ Up” key will advance to the Menu selection
screen. (See section 4.2).
Password Incorrect.
The unit has not accepted the
Password entered.
Pressing the " Down" key will return to
the Enter Password stage.
Pressing the “ Up” key exits the
Password menu and returns operation
to the measurement reading mode.
34
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
New / Change Password
(*Decimal point indicates that this will be flashing).
Pressing the “ Down” key will scroll the value of the
first digit from 0 through to 9, the value will wrap from 9
round to 0.
Pressing the “ Up” key to advance the operation to
the next digit and sets the first digit, in this case to “2”
New / Change Password, first digit entered, prompting for
second digit. (*Decimal point indicates that this will be
flashing).
Pressing the “ Down” key will scroll the value of the
second digit from 0 through to 9, the value will wrap from
9 round to 0.
Pressing the “ Up” key to advance the operation to the
next digit and sets the second digit, in this case to “1”
New / Change Password, second digit entered,
prompting for third digit. (*decimal point indicates that
this will be flashing).
Pressing the “ Down” key will scroll the value of the
third digit from 0 through to 9, the value will wrap from 9
round to 0.
Pressing the “ Up” key to advance the operation to
the next digit and sets the third digit, in this case to “5”
New / Change Password, third digit entered, prompting
for fourth digit. (* denotes that decimal point will be
flashing).
Pressing the “ Down” key will scroll the value of the
fourth digit from 0 through to 9, the value will wrap from
9 round to 0.
Pressing the “ Up” key to advance the operation to
the “New Password Confirmed” and sets the fourth digit,
in this case to “3”.
New Password confirmed.
Pressing the “ Down” key will return to the
“New/Change Password”.
Pressing the “ Up” key will advances to the
Menu selection screen.(see section 4.2).
This menu screen will allow the user to select different
Parameter related to Relay Output.
Pressing the “ Up” key allows the user to select &
Configuare the relay output option (see section 4.2.4.1)
(see section 4.2.5)
Pressing the “ down key will advance to Quit screen.
4.2.5 Quit screen.
4.2.4 Relay Output Parameter selection screen.
4.2 Menu selection.
This menu screen is used to select the different system
Parameter like “system type,””CT Ratio”,”PT Ratio”,
Pressing the “ Up” key allows the user to set
Pressing the “ down” key will advance to
Different system parameters.
Communication selection screen (see section 4.2.2)
4.2.2 Communication Parameter selection screen.
4.2.3 Reset Parameter selection screen.
4.2.1 System Parameter selection screen.
This menu screen is used to Reset the energy parameter .
Pressing the “ Up” key allows the user to Reset energy
Pressing the “ down key ” will advance to Output
system parameter (see section 4.2.3.1)
Option selection screen (see section 4.2.4).
This menu screen is used to select the different communication
parameters like “Address selection”,”RS485 Parity selection”,
Pressing the “ Up” key allows the user to set different
Pressing the “ down key will advance to Reset parameter
Communication parameters
(see section 4.2.3)
”RS485 baud rate”
Screen.
Pressing the “ Up” key will allow the user to Quit from menu
& return to measurement screen.
(see section 4.2.1.1 to 4.2.1.3)
(see section 4.2.2.1 to 4.2.2.3)
This screen allows user to Quit from Menu.
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
4.2.1)
4.2.1 System parameters Selection
Pressing the “ Up” key accepts the present value
and advances to the “potential Transformer secondary
Value edit” menu. (See Section 4.2.1.2)
Pressing the “ Down” key will enter the “Potential
Transformer Primary Value Edit” mode.
Initially the “multiplier must be selected, pressing the “
Down” key will move the decimal point position to the
right until it reaches # # # .# after which it will return to
#. # # #.
Pressing the “ Up” key accepts the present
multiplier (decimal point position) and advances to the
“ Digit Edit” mode.potential Transformer primary
4.2.1.1 Potential Transformer Primary Value
This screen enables the user to set primary transformer voltage
In terms of kilovolts (note the x1000 enunciator).
Potential Transformer primary Digit Edit
Pressing the “ Down” key will scroll the value of
the most significant digit from 0 through to 9 unless
the presently displayed Potential Transformer Primary
Value together with the Current Transformer Primary
Value, previously set, would result in a maximum power
of greater than 1000 MVA per phase in which case
the digit range will be restricted.
Pressing the “ Up” key accepts the present value
at the cursor position and advances the cursor to the
next less significant digit.
Note : the flashing decimal point indicates the cursor position, a steady decimal point will be present
to identify the scaling of the number until the cursor position coincides with the steady decimal point
position. At this stage the decimal point will flash.
When the least significant digit has been set pressing the “ Up” key will advance to the
“Potential Transformer Primary Value Confirmation” stage.
Screen showing display of 0.239 kV i.e. 239 Volts indicating steady decimal point and cursor
flashing at the “hundreds of volts” position.
Potential Transformer Primary Value Confirmation
This screen will only appear following an edit of the
Potential Transformer Primary Value.
If the scaling is not correct, pressing the “ Down”
key will return to the “Potential Transformer Primary
Value Edit” stage.
Pressing the “ Up” key sets the displayed value
and will advance to the Potential Transformer secondary
Value (See Section 4.2.1.2)
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
4.2.1.2 Potential Transformer secondary Value
The value must be set to the nominal full scale secondary voltage which will be obtained from the
Transformer when the potential transformer(PT)primary is supplied with the voltage defined in 4.2.1.1
potential transformer primary voltage. The ratio of full scale primary to full scale secondary is defined
as the transformer ratio.
Note that the range of instrument is from 140 to 277V
Transformer Secondary Value Edit” mode. Pressing the
“ Down” key will scroll the value of the most significant digit
From available range of PT secondary value
Pressing the “ Down” key will enter the “Potential
Pressing the “ Up” key accepts the present value
and advances to the “Current Transformer Primary
Value edit” menu. (See Section 4.2.1.3)
Pressing the “ Up” key accepts the present value
at the cursor position and advances the cursor to the
next less significant digit.
for 239 VL-N. Please refer the table below for different ranges.
Potential Transformer secondary ranges for various Input Voltages
63.5V L-N 57V - 69V L-N
70V - 139V L-N
140V - 277V L-N
133.0V L-N
239.6V L-N
x1000 kWh
VON IREV
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh

x1000 kWh
3600 Imp/KWh
VON IREV
4.2.1.3 Current Transformer Primary Value
The nominal Full Scale Current that will be displayed as the Line currents. This screen enables the
user to display the Line currents inclusive of any transformer ratios, the values displayed represent
the Current in Amps.
Pressing the “ Up” key accepts the present value and rollbacks to menu selection screen
(See Section 4.2)
restricted, the value will wrap. Example: If primary value
of PT is set as 400kV (max value) then primary value of
Current is restricted to 1736A.
Pressing the “ Up” key will advance to the next less
significant digit. (* Denotes that decimal point will be
flashing).
Pressing the “ Down” key will enter the “Current
Transformer Primary Value Edit” mode. This will scroll the
value of the most significant digit from 0 through to 9,
unless the presently displayed Current Transformer
Primary Value together with the Potential Transformer
Primary Value results in a maximum power of greater
than 1000 MVA in which case the digit range will be
“ Up” key is pressed.
The “Maximum Power” restriction of 1000 MVA refers to 120% of nominal current and 120% of
nominal voltage, i.e, 694.4 MVA nominal power per phase.
When the least significant digit had been set, pressing the “ Up” key will advance to the
“Current Transformer Primary Value Confirmation” stage.
The minimum value allowed is 1, the value will be forced to 1 if the display contains zero when the
Current Transformer Primary Value Confirmation.
This screen will only appear following an edit of the
.
If the scaling is not correct, Pressing the “ Down” key
will return to the “ Edit
stage with the most significant digit highlighted (associated
decimal point flashing).
Current
Transformer Primary Value
Current Transformer Primary Value ”
Potential Transformer Secondary Value Confirmation
This screen will only appear following an edit of the
Potential Transformer Value.Secondary
If the scaling is not correct, pressing the “ Down”
key will return to the “Potential Transformer Secondary
Value Edit”
Pressing the “ Up” key sets the displayed value
and will advance to the current Transformer Primary
Value (See Section 4.2.1.3)
Note : the flashing decimal point indicates the cursor position, a steady decimal point will be present
to identify the scaling of the number until the cursor position coincides with the steady decimal point
position. At this stage the decimal point will flash.
When the least significant digit has been set pressing the “ Up” key will advance to the
“Potential Transformer secondary Value Confirmation” stage.
5
x1000 kWh
VON IREV
x1000 kWh
VON IREV
Enter Address, first digit entered, prompt for second digit
(* Denotes that decimal point will be flashing).
Use the “ Down” key to scroll the value of the second digit
Press the “ Up” key to advance to next digit.
Enter Address, second digit entered, prompt for third digit
(* Denotes that decimal point will be flashing).
Use the “ Down” key to scroll the value of the third digit
Enter Address for third digit .
Screen.
Press the “ Up” key to advance to Address confirmation
4.2.2.1 Address Setting : This screen applies to the RS 485 output only.
This screen allows the user to set RS485 parameter for instruments
Enter Address, prompt for first digit.
(* Denotes that decimal point will be flashing).
Press the “ Down” key to scroll the value of the first digit
Press the “ Up” key to advance to next digit.
The range of allowable address is 1 to 247 .
4.2.2 Communication Parameter Selection :
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
4.2.2.2 RS 485 Baud Rate :
This screen allows the user to set Baud Rate of RS 485 port.
The values displayed on screen are in kbaud ..
Pressing “ Up” key accepts the present value and
advance to the Parity Selection (See Section 4.2.2.3)
Pressing the “ Down” key will enter the “Baud Rate
Edit” mode and scroll the value through 2.4, 4.8, 9.6 , 19.2
and back to 2.4
Address confirmation Screen.
This Screen confirms the Address set by user .
Press the “ Up” key to advance to next Screen
“Rs485 Baud Rate” (See Section 4.2.2.2)
Pressing the “ Down” key will reenter the “Address
Edit” mode.
4.2.2.3 RS 485 Parity Selection :
This screen allows the user to set Parity & number of stop bits of RS 485 port.
Pressing “ Up” key accepts the present value and
advance to Menu selection (see section 4.2).
Pressing the “ Down” key will enter the “Parity & stop bit
Edit” mode and scroll the value through
odd : odd parity with one stop bit
no 1 : no parity with one stop bit
no 2 : no parity with two stop bit
E : even parity with one stop bit
Pressing the “ Up” key will set the value.
RS 485 Parity confirmation :
Pressing “ Down” key will be re-enter into Parity Edit mode .
Reset (None)
Pressing the “ Down” key will enter the “Reset
option” mode and scroll through Parameter
and wrapping back to None.
Pressing “ Up” key advances to menu
selection screen (see section 4.2)
RS 485 Baud Rate confirmation :
Pressing “ Down” key will be re-enter into the.
Pressing the “ Up” key will select the value and advances
to the Parity Selection (See Section 4.2.2.3).
Baud Rate Edit mode
3.2.3.1 Resetting Parameter
The following screens allow the users to reset the all Energy.
3.2.3 Reset Parameter Selection :
Pressing the “ Up” key jump back to the
menu selection screen (see section 4.2).
again will
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
Reset option select,
The user has scrolled through to the “E” Energy
value.
Pressing “ Up” key will select the value and
advance to the “Reset Energy Confirmation” Mode.
& resets energy.
Integrated Energy at the moment of resetting energy will
become zero.
Reset Energy Confirmation.
Pressing the “ Down” key will re-enter the “Reset
option” mode.
Pressing “ Up” key will jump back to the
menu selection screen (see section 4.2).
6
4.2.4. Relay output menu
4.2.4.1 Pulse Duration Selection:
This screen applies only to the Pulsed output mode of the relay
This screen allows the user to set Relay energisation time in milliseconds.
Pressing “ Up” key accepts the present value and
advance to pulse rate selection menu (see section 4.2.4.2).
Pulse Duration Edit.
Pressing the “ Down” key will enter the “Pulse Duration
Edit” mode and scroll the value through 60, 100, 200 and
wrapping back to 60.
Pressing the “ Up” key will select the value and advances
to “Pulse Duration Confirmation”.
x1000 kWh
VON IREV
4.2.4.2 Pulse Rate
This screen applies to the Relay Output option only. The screen allows user to set the energy
pulse rate divisor. Divisor values can be selected through 1,10,100,1000.
Pressing “ Up” key accepts the presents value
and advances to the “Menu Selection Screen”
(See section 4.2.4.).
Pressing the “ Down” key will enter the “Pulse rate divisor
Edit” mode and scroll the value through the values 1,10,100,
1000 wrapping back to 1.
Pressing the “ Up” key advances to the “Pulse rate
Divisor Confirmation” menu.
(See section 4.2.4)
Pulse Rate Divisor Confirmation.
This screen will only appear following an edit of the
Pulse rate divisor.
If the Pulse rate shown is not correct, pressing the
“ Down” key will return to the “Pulse rate divisor
Edit” stage by blanking the bottom line of the
display.
Pressing “ Up” key sets the displayed value and
will advance to the “Relay output Option Menu”.
Pressing “ Up” key set displayed value and
Pulse Duration Confirmation.
This screen will only appear following an edit of the
Pulse duration.
pressing the “ Down” key will re-enter the “Pulse
Duration Edit” mode.
Will advance to pulse rate selection menu
(See section 4.2.4.2)
x1000 kWh
VON IREV
x1000 kWh
VON IREV
x1000 kWh
VON IREV
* System power = CT(Primary) x PT(Primary)L-N
Pulse Duration 60 ms,100 ms or 200 ms
Divisor
1
10
100
1000
Pulse rate
Pulse System Power*
1per Whr
1per 10Whr
1per 100Whr
1 per 1000Whr
1per kWhr
1per 10kWhr
1per 100kWhr
1 per 1000kWhr
1per MWhr
1per 10MWhr
1per 100MWhr
1per 1000MWhr
Up to 3600W
Up to 3600W
Up to 3600W
Up to 3600W
Up to 3600kW
Up to 3600kW
Up to 3600kW
Up to 3600kW
Above 3600kW
Above 3600kW
Above 3600kW
Above 3600kW
TABLE 3 : Energy Pulse Rate Divisor
5. Relay output (Optional) :
5.1 Pulse Output :
Pulse output is the potential free, very fast acting relay contact which can be used to drive an external
mechanical counter for energy measurement.
Rish EM 3490 SS has one pulse output.
One normally open & one normally closed
Relay Contact
60ms , 100ms or 200ms
Pulse Duration
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
3600 Imp/KWh
Pressing “ Up” key accepts the presents value
and advances to the “Energy digit Rollover(reset) count”menu
(See section 4.2.1.5).
Pressing “ Up” key sets the displayed value and
will advance to the “Energy digit reset count” menu.
4.2.1.4. Energy Display on modbus
Pressing the “ Down” key will enter the “Energy Display
On Modbus Edit” mode and scroll the value through the values
1,2 & 3 wrapping back to 1
1 : Energy In Wh
2 : Energy in KWh
3: Energy in MWh.
Pressing the “ Up” key advances to the “Energy Display
Energy Display On Modbus Confirmation.
This screen will only appear following an edit of the
Energy Display On Modbus.
This screen enable user to set energy in terms of Wh / KWh / MWh on RS 485 Output depending as per the
requirement.
Note : Default value is set to ‘1’ i.e. Energy on Modbus will be in
terms of Wh resp.
Pressing the “ Down” key will enter the “
On Modbus Edit” .
Energy Display
(See section 4.2.1.5)
Pressing the “ Up” key sets the displayed value and
selection screen (see section 4.2).
will rollbacks to menu
4.2.1.5 Energy Digit Rollover(reset) count :
This screen
which energy will rollback to zero depends upon setting of Wh,KWh,
& MWh.
enables user for setting maximum energy count after
Pressing the “ Down” key will enter the
count edit mode. This will scroll the value of reset count from
7 to 14 for Wh,from 7 to 12 for KWh & from 7 to 9 for MWh.
Energy digit reset
Pressing the “ Up” key sets the displayed value and
back to the system parameter selection (See Section 4.2.1)
will jump
Pressing “ Up key “ will advance to Energy digit reset count confirmation screen.
Pressing the “ Down” key will re-enter Energy digit Rollover(reset) count edit mode.
Ex. If energy is set Wh & It will set Energy digit
count to 10 then energy will reset after “9,999,999,999” & then will
rollback to zero
display on modbus
Note :
1) Default value is set to “14” i.e if energy count crosses14 digit
it will rollback to zero.
2) Energy displays on modbus is set to (2) & energy digit reset count is
set to 12.Energy screen on display will show “-------” i.e Energy
overflow.when energy crosses the 11 digit count.
3) Energy displays on modbus is set to (3) & energy digit reset count
is set to 9.Energy screen on display will show “-------” i.e Energy
overflow. when energy crosses the 8 digit count.
.
Pressing the “ Up” key sets the displayed value and
will advance to the “Energy Display on Modbus” menu.
(See section 4.2.1.4)
x1000 kWh
VON IREV
3600 Imp/KWh
x1000 kWh
VON IREV
3600 Imp/KWh
x1000 kWh
VON IREV
3600 Imp/KWh
x1000 kWh
3600 Imp/KWh
VON IREV
1. For Energy Output in Wh
Divisor
1
Pulse rate
Pulse System Power*
1 per KWhr
1 per 1000KWhr
1per 1000MWhr
Up to 3600W
Up to 3600kW
Above 3600kW
2. For Energy Output in KWh
Divisor
1
Pulse rate
Pulse System Power*
1per MWhr
1per 1000MWhr
1per 1000GWhr
Up to 3600W
Up to 3600kW
Above 3600kW
3. For Energy Output in MWh

7
The each byte in RTU mode has following format:
8-bit binary, hexadecimal 0-9, A-F
2 hexadecimal characters contained in each 8-bit field of
the message
4 bytes (32 bits) per parameter.
Floating point format ( to IEEE 754)
Most significant byte first (Alternative least significant byte first)
Format of Data Bytes
2 byte Cyclical Redundancy Check (CRC)
Error Checking Bytes
1 start bit,
8 data bits, least significant bit sent first
1 bit for even/odd parity
1 stop bit if parity is used; 1 or 2 bits if no parity
Byte format
Communication Baud Rate is user selectable from the front panel between 2400, 4800, 9600, 19200 bps.
6. RS 485 ( ModBus ) Output :
Meter supports MODBUS (RS485) RTU protocol( 2-wire ) .
Connection should be made using twisted pair shielded cable. All "A" and "B" connections are daisy chained
together. The screens should also be connected to the “Gnd” terminal. To avoid the possibility of loop currents,
an Earth connection should be made at one point on the network.Loop (ring) topology does not require any
termination load. Line topology may or may not require terminating loads depending on the type and length
of cable used. The impedance of the termination load should match the impedance of the cable and be at both
ends of the line. The cable should be terminated at each end with a 120 ohm (1/4 Watt min.) resistor.
RS 485 network supports maximum length of 1.2km. Including the meter, a maximum of 32
instruments can be connected in RS485 network.The permissible address range for meter
s between 1 and 247 for 32 instruments. Broadcast Mode (address 0) is not allowed.
The maximum latency time of an meter is 200ms i.e. this is the amount of time that can pass
before the first response character is output.
After sending any query through software ( of the Master) , it must allow 200ms of time to elapse before
assuming that the meter is not going to respond. If slave does not respond within 200 ms,
Master can ignore the previous query and can issue fresh query to the slave.
Exception Cases : An exception code will be generated when meter receives ModBus query with
valid parity & error check but which contains some other error ( e.g. Attempt to set floating point variable to
an invalid value ) The response generated will be “Function code” ORed with HEX (80H ).
The exception codes are listed below
01 Illegal function The function code is not supported by meter.
02 Illegal Data
Address
Attempt to access an invalid address or an attempt to read
or write part of a floating point value
03 Illegal Data
Value
Attempt to set a floating point variable to an invalid value
Function code :
03 Read Holding Registers Read content of read /write location ( 4X )
04 Read input Registers Read content of read only location ( 3X )
16 Presets Multiple Registers Set the content of read / write locations ( 4X )
Accessing 3 X register for reading measured values:
Two consecutive 16 bit registers represent one parameter. Refer table 4 for the addresses
of 3X registers (Parameters measured by the instruments).
Each parameter is held in the 3X registers. Modbus Code 04 is used to access all parameters.
Example :
To read parameter ,
Volts : Start address= 00(Hex) Number of registers = 02
Note : Number of registers = Number of parameters x 2
Each Query for reading the data must be restricted to 20 parameters or less. Exceeding the 20 parameter
limit will cause a ModBus exception code to be returned.
Query :
Device
Address
Function
Code
Start Address
High
Start Address
Low
Number of
Registers Hi
Number of
Registers Lo
CRC
Low
CRC
High
01 (Hex) 04 (Hex) 00 (Hex) 00(Hex) 00 (Hex) 02(Hex) 71 (Hex) CB (Hex)
Start Address High : Most significant 8 bits of starting address of the parameter requested.
Start Address low :Least significant 8 bits of starting address of the parameter requested.
Number of register Hi : Most significant 8 bits of Number of registers requested.
Number of register Lo : Least significant 8 bits of Number of registers requested.
(Note : Two consecutive 16 bit register represent one parameter.)
Byte Count : Total number of data bytes received.
Data register 1 High Byte : Most significant 8 bits of Data register 1 of the parameter requested.
Data register 1 Low Byte : Least significant 8 bits of Data register 1 of the parameter requested.
Data register 2 High Byte : Most significant 8 bits of Data register 2 of the parameter requested.
(Note : Two consecutive 16 bit register represent one parameter.)
Response: Volt (239.6V)
Device
Address
Function
Code
Byte
Count
Data Register1
High Byte
CRC
High
01 (Hex) 04 (Hex) 04 (Hex) 43 (Hex) 6E (Hex) E9 (Hex) 7B (Hex) 8D (Hex)
Data Register1
Low Byte
Data Register2
High Byte
Data Register2
Low Byte
AE (Hex)
CRC
Low
Data register 2 Low Byte : Least significant 8 bits of Data register 2 of the parameter requested.
Table 4 : 3 X register addresses (measured parameters)
Address
(Register)
Parameter
No.
Parameter Modbus Start Address Hex
High Byte Low Byte High ByteHigh Byte
30001 1Volts 1 00 0
30007 4Current 1 00 6
30013 7 W1 00 C
30019 10 VA1 00 12
30025 13 VAR1 00 18
30031 16 PF1 00 1E
30037 19 Phase Angle 1 00 24
30071 36 Freq 00 46 30071 36 Freq 00 46
30073 00 48 37 Wh 00
30081 41 Vah 00 50
Parameter
No.
Parameter Modbus Start Address Hex
Accessing 4 X register for Reading & Writing :
Each setting is held in the 4X registers .ModBus code 03 is used to read the current setting and code 16
is used to write/change the setting. Refer Table 5 for 4 X Register addresses.
Example : Reading PT Secondary
System type : Start address= 2C (Hex) Number of registers = 02
Note :Number of registers = Number of Parameters x 2
Query :
Start Address High : Most significant 8 bits of starting address of the parameter requested.
Start Address low :Least significant 8 bits of starting address of the parameter requested.
Number of register Hi : Most significant 8 bits of Number of registers requested.
Number of register Lo : Least significant 8 bits of Number of registers requested.
(Note : Two consecutive 16 bit register represent one parameter.)
Response: PT Secondary 239.6V
Byte Count : Total number of data bytes received.
Data register 1 High Byte : Most significant 8 bits of Data register 1 of the parameter requested.
Data register 1 Low Byte : Least significant 8 bits of Data register 1 of the parameter requested.
Data register 2 High Byte : Most significant 8 bits of Data register 2 of the parameter requested.
(Note : Two consecutive 16 bit register represent one parameter.)
Data register 2 Low Byte : Least significant 8 bits of Data register 2 of the parameter requested.
Device Address
Function Code
Start Address High
Start Address Low
Number of Registers Hi
Number of Registers Lo
CRC Low
CRC High
01 (Hex)
03 (Hex)
00 (Hex)
2C (Hex)
00 (Hex)
02 (Hex)
05 (Hex)
C2 (Hex)
35 (Hex)
Device Address
Function Code
Byte Count
Data Register1 High Byte
Data Register1Low Byte
Data Register2 High Byte
CRC Low
CRC High
01 (Hex)
03 (Hex)
04 (Hex)
43 (Hex)
6F (Hex)
99 (Hex)
9A (Hex)
91 (Hex)
Data Register2 Low Byte
Note : Active Energy reading received will be in Watt Hours.
Note : Apparent Energy reading received will be in VA Hours.
8
Example : Writing PT Secondary
System type : Start address= 2C(Hex) Number of registers = 02
Query:( Set PT Secondary = 239.6V).
Byte Count : Total number of data bytes to be transmitted.
Data register 1 High Byte : Most significant 8 bits of Data register 1 of the parameter requested.
Data register 1 Low Byte : Least significant 8 bits of Data register 1 of the parameter requested.
Data register 2 High Byte : Most significant 8 bits of Data register 2 of the parameter requested.
(Note : Two consecutive 16 bit register represent one parameter.)
Data register 2 Low Byte : Least significant 8 bits of Data register 2 of the parameter requested.
Start Address High : Most significant 8 bits of starting address of the parameter requested.
Start Address low :Least significant 8 bits of starting address of the parameter requested.
Number of register Hi : Most significant 8 bits of Number of registers requested.
Number of register Lo : Least significant 8 bits of Number of registers requested.
(Note : Two consecutive 16 bit register represent one parameter.)
Response:
99 (Hex)
9A (Hex)
3E (Hex)
40 (Hex)
43 (Hex)
01 (Hex)
10 (Hex)
00 (Hex)
2C (Hex)
00 (Hex)
02(Hex)
04 (Hex)
6F (Hex)
Data Register-2 Low Byte
Device Address
Function Code
Starting Address Hi
Starting Address Lo
Number of Registers Hi
Number of Registers Lo
Byte Count
CRC High
CRC Low
Data Register-1 Low Byte
Data Register-2 High Byte
Data Register-1High Byte
Device Address
Function Code
Start Address High
Start Address Low
Number of Registers Hi
Number of Registers Lo
CRC Low
CRC High
01 (Hex)
10 (Hex)
00 (Hex)
2C (Hex)
00 (Hex)
02(Hex)
80 (Hex)
01 (Hex)
PT Secondary
40041 15 00 28
Register Order/Word Order 00
R/Wp
00 2C
40045 16 00 R/Wp
00 46
40071 17 Password 00
R/W
Address
(Register)
Parameter
No.
Parameter Modbus Start Address Hex
High Byte Low Byte High ByteHigh Byte
40007 2Sys Voltage 00 06
Read / Write
R
40009 3Sys Current 00 08 R40009 Sys Current 00 08 R
-
00 0C
40019
5Pulse Width 00
R/Wp
00
40015 6
RS 485 Set-up Code
00
R/Wp
00 14
40021 Node Address. 00
00 16
40023 Pulse Divisor 00
R/Wp
00 20
40033 11 00
R/Wp
00 22
40035 12 CT Primary 00
R/Wp
-
00 24
40037 13 System Power 00
R
00 14
40021 9.00
R/Wp
00 16
40023 10 Pulse Divisor 00
00
7
00
8
40013
40017
Energy Reset
-
W Wp
-
PT Primary
10
0E
12
Table 5 : 4 X register addresses
-----
104
40005 Energy Display on Modbus R/Wp 00
40039 14 Energy Digit Rollover(reset) count 00 26
R/Wp

Explanation for 4 X register :
Address Parameter Description
40007 System
Voltage
This address is read only and displays System Voltage
40009 System
Current
This address is read only and displays System Current
-
40011 -
40013 Pulse Width
of Relay
This address is used to set pulse width of the Pulse output.
Write one of the following values to this address:
60 : 60 ms
100 : 100 ms
200 : 200 ms
Writing any other value will return error .
40015 Reset Energy
Counter
This address is used to reset the Energy Counter.
Write zero value to this register to reset the energy counter.
Writing any other value will return an error.
40017 --
40019 Rs485 Set-up
Code
This address is used to set the baud rate, Parity, Number of
stop bits. Refer to Table 6 for details.
40005
40021 Node
Address
This register address is used to set Device address
between 1 to 247 .
40023 Pulse Divisor This address is used to set pulse divisor of the Pulse output.
Write one of the following values to this address:
1 : Divisor 1
10 : Divisor 10
100 : Divisor 100
1000 : Divisor 1000 & in KWh and MWh divisor will be 1 by default.
Writing any other value will return an error.
Table 6 : RS 485 Set-up Code
NOTE :
Codes not listed in the table above may give rise to unpredictable results including loss of
communication. Excise caution when attempting to change mode via direct Modbus writes.
19200 NONE
19200
ODD
EVEN
19200
9600
9600
9600
9600
4800
4800
4800
4800
2400
2400
NONE
2400
2400
NONE
NONE
NONE
NONE
NONE
ODD
EVEN
ODD
EVEN
ODD
EVEN
19200 NONE
Baud Rate Parity Stop Bit Decimal value
01
01
01
02
01
01
02
01
01
01
02
01
01
01
01
02
13
14
15
08
09
10
11
04
05
06
07
00
01
02
03
12
40071 Password This address is used to set & reset the password.
Valid Range of Password can be set is 0000 - 9999 .
1) If password lock is present & if this location is read it will
return zero.
2) If Password lock is absent & if this location is read it will
return One.
3) If password lock is present & to disable this lock
first send valid password to this location then write “0000”
to this location
4) If password lock is present & to modify 4X parameter
first send valid password to this location so that 4X parameter
will be accessible for modification.
5) If for in any of the above case invalid password is send then
meter will return exceptional error 2.
40037 Sys Power System Power (Read Only) is the Nominal system power based on
the values of Nominal system volts and Nominal system current.
40041
40045
Word Order
PT secondary
Word Order controls the order in which meter
receives or sends floating - point numbers:- normal or reversed
register order . In normal mode, the two registers that make up
a floating point numbers are sent most significant bytes first.
In reversed register mode , the two registers that make up
a floating point numbers are sent least significant bytes first.
To set the mode, write the value ‘2141.0’ into this register-
the instrument will detect the order used to send this value and
set that order for all ModBus transaction involving floating point
numbers.
This address is used to read and write the PT secondary value.
Ref Table for the range of PT secondary settable values in
This address allows the user to set CT Primary value.
The maximum settable value is 9999 & also depends on the
per phase 1000MVA Restriction of power combined with PT primary
40035 CT Pimary
40039
Section 4.2.1.3
40033 PT Primary This address allows the user to set PT Primary value.
The maximum settable value is 400kV &
also depends on the per phase 1000MVA Restriction of power
combined with CT primary. PT primary value should be in terms of
voltage for example to set 2kV send 2000V.
6.1 User Assignable Modbus Registers:
30513 257 00
Modbus Start Address (Hex)
Assignable Reg 1
30515 258 02
02
Assignable Reg 2
30517 259 04
02
Assignable Reg 3
30519 260 06
02
Assignable Reg 4
30521 261 08
02
Assignable Reg 5
30523 262 0A
02
Assignable Reg 6
30525 263 0C
02
Assignable Reg 7
30527 264 0E
02
Assignable Reg 8
30529 265 10
02
Assignable Reg 9
30531 266 12
02
Assignable Reg 10
30533 267 14
02
Assignable Reg 11
30535 268 16
02
Assignable Reg 12
30537 269 18
02
Assignable Reg 13
30539 270 1A
02
Assignable Reg 14
30541 271 1C
02
Assignable Reg 15
30543 272 1E
02
Assignable Reg 16
30545 273 20
02
Assignable Reg 17
30547 274 22
02
Assignable Reg 18
30549 275 24
02
Assignable Reg 19
30551 276 26
02
Assignable Reg 20
Table 9 : User Assignable 3X Data Registers
The meter contains the 20 user assignable registers in the address range of 0x200 (30513) to
0x226 (30551) (see Table 9).
Any of the parameter addresses ( 3X register addresses Table 4)) accessible in the instrument
can be mapped to these 20 user assignable registers.
Parameters (3X registers addresses ) that resides in different locations may be accessed by
the single request by re-mapping them to adjacent address in the user assignable registers area.
The actual address of the parameters ( 3X registers addresses) which are to be assessed via
address 0x200 to 0x226 are specified in 4x Register 0x200 to 0x213 (see Table 10).
Address
(Register)
Parameter
Number. Assignable Register
02
High Byte Low Byte
Table 10 : User Assignable mapping register ( 4X registers)
Example :
Assigning parameter to user assignable registers
To access the voltage (3X address 0x0000) and Power Factor (3X address 0x001E) through user
assignable register assign these addresses to 4x register (Table 10 ) 0x0200 and 0x0201 respectively .
Assigning Query:
00 (Hex)
1E (Hex)
6A (Hex)
C7 (Hex)
00 (Hex)
01 (Hex)
10 (Hex)
02 (Hex)
00 (Hex)
00 (Hex)*
02(Hex)*
04 (Hex)
00 (Hex)
Data Register-2 Low Byte
Device Address
Function Code
Starting Address Hi
Starting Address Lo
Number of Registers Hi
Number of Registers Lo
Byte Count
CRC High
CRC Low
Data Register-1 Low Byte
Data Register-2 High Byte
Data Register-1High Byte
}
}
Voltage *
(3X Address 0x0000)
Power Factor *
(3X Address 0x001E)
* Note : Parameters should be assigned in Multiple of two i.e. 2,4,6,8.......20.
40514 258 Mapped Add for register #0x0202 02 01
40515 259 Mapped Add for register #0x0204 02 02
260 Mapped Add for register #0x0206 02 03
40516
02 04
40517 261 Mapped Add for register #0x0208
02 05
40518 262 Mapped Add for register #0x020A
06
40519 263 Mapped Add for register #0x020C 02
02
07
40520 264 Mapped Add for register #0x020E
08
40521 265 Mapped Add for register #0x0210
09
02
0A
02
0B
02
0C
02
0D
02
00
40513 257 Mapped Add for register #0x0200 02
0E
02
0F
02
10
02
02
11
02
12
02
13
02
40522 266 Mapped Add for register #0x0212
40523 267 Mapped Add for register #0x0214
40524 268 Mapped Add for register #0x0216
40527 269 Mapped Add for register #0x0218
40528 270 Mapped Add for register #0x021A
40529 271 Mapped Add for register #0x021C
40530 272 Mapped Add for register #0x021E
40531 273 Mapped Add for register #0x0220
40532 274 Mapped Add for register #0x0222
40533 275 Mapped Add for register #0x0224
40534 276 Mapped Add for register #0x0226
Modbus Start Address (Hex)
Address
(Register)
Parameter
Number. Mapping Register High Byte Low Byte
Device Address
Function Code
Start Address High
Start Address Low
Number of Registers Hi
Number of Registers Lo
CRC Low
CRC High
01 (Hex)
10 (Hex)
02 (Hex)
00 (Hex)
00 (Hex)
02 (Hex)
40 (Hex)
70 (Hex)
Response :
910
Start Address High : Most significant 8 bits of User assignable register. starting address of
Start Address low :Least significant 8 bits of starting address of User assignable register.
Number of register Hi : Most significant 8 bits of Number of registers requested.
Number of register Lo : Least significant 8 bits of Number of registers requested.
**Note : Two consecutive 16 bit register represent one parameter.
Since two parameters are requested four registers are required
Reading Parameter data through User Assignable Registers:
In assigning query Voltage and Power Factor1 parameters were assigned to 0x 200 and
0x201(Table10) which will point to user assignable 3xregisters 0x200 and 0x202 (table9). So to read
Voltage and PowerFactor1 data reading query should be as below.
Query:
Device Address
Function Code
Start Address High
Start Address Low
Number of Registers Hi
Number of Registers Lo
CRC Low
CRC High
01 (Hex)
04 (Hex)
02 (Hex)
00 (Hex)
00 (Hex)
04 (Hex) **
F0 (Hex)
71 (Hex)
Response : (Volt2 = 219.30 / Power Factor1 = 1.0)
00 (Hex)
00 (Hex)
79 (Hex)
3F (Hex)
3F (Hex)
01 (Hex)
04 (Hex)
08 (Hex)
43 (Hex)
5B (Hex)
4E (Hex)
04 (Hex)
80 (Hex)
Data Register-4 Low Byte
Device Address
Function Code
Byte count
CRC High
CRC Low
Data Register-3 Low Byte
Data Register-4 High Byte
Data Register-3 High Byte
}
Voltage Data
Power Factor 1Data
Data Register-2 Low Byte
Data Register-1 Low Byte
Data Register-2 High Byte
Data Register-1High Byte
}
User Assignable mapping Registers
( 4X Registers Table10 )
Voltage (0x0000)
Power Factor 1 (0x001E)
Wh Import (0x0048)
Frequency (0x0046)
VAh (0x0050)
Current (0x0006)
User Assignable Data Registers
( 3X Registers Table 9 )
0x200
(16 bit)
0x201
(16 bit)
0x203
(16 bit)
0x202
(16 bit)
0x204
(16 bit)
0x205
(16 bit)
0x206
(16 bit)
0x207
(16 bit)
0x224
(16 bit) 0x225
(16 bit)
0x226
(16 bit)
0x227
(16 bit)
0x200
(Starting Address)
0x202
0x204
0x206
0x224
0x226
0x200
0x201
0x202
0x203
0x212
0x213
(Starting Address)
To get the data through User assignable Register use following steps:
1) Assign starting addresses(Table3) of parameters of interest to a
“User assignable mapping registers” in a sequence in which they are to be accessed
(see section “Assigning parameter to user assignable registers”)
2) Once the parameters are mapped data can be acquired by using
“User assignable data register “ Starting address . i.e to access data of Voltage ,
Power factor1,Wh import, Frequency send query with starting address 0x200
with number of register 8 or individually parameters can be accessed
for example if current1 to be accessed use starting address 0x212.
(See section Reading Parameter data through User Assignable Registers)
Energy display
on Modbus
This address is used to set energy display on modbus in Wh,KWh
& MWh.
1 =
3 = Energy in MWh.
Write one of the following value to this address.
Energy in Wh. 2 = Energy in KWh.
This address
If Energy in Wh count will be set in
between 7 to 14 r In KWh set in between 7 to 12 & In MWh set in
is used to setting maximum energy count after
which energy will rollback to zero depends upon setting of Wh,KWh,
& MWh. display on modbus
o
Energy digit
Rollover(Reset)
Count

11
Caution
1. In the interest of safety and functionality this product must be installed by
a qualified engineer, abiding by any local regulations.
2. Voltages dangerous to human life are present at some of the terminal
connections of this unit. Ensure that all supplies are de-energised before
attempting any connection or disconnection.
3. These products do not have internal fuses therefore external fuses must
be used to ensure safety under fault conditions.
As the front of the enclosure conforms to IP54 it is protected from water spray
from all directions, additional protection to the panel may be obtained by the
use of an optional panel gasket. The terminals at the rear of the product
should be protected from liquids.
The meter should be mounted in a reasonably stable ambient
temperature and where the operating temperature is within the range
0
-10 to 55 C . Vibration should be kept to a minimum and the product should
not be mounted where it will be subjected to excessive direct sunlight.
8. Installation
Mounting is by four side clamps, slide the side clamps through side slot till side clamp
gets firmly locked in a groove (Refer fig.) Consideration should be given to the space
required behind the instrument to allow for bends in the connection cables.
SLIDE IN THIS DIRECTION AND LOCK
PANEL
Front
7. Phaser Diagram :
Connections Quadrant
Power ( P )
Sign of
Active
Power ( Q )
Sign of
Reactive
Factor ( PF )
Sign of
Power
Inductive /
Capacitive
Import 1+ P + Q + L
Import 4+ P - Q + C
Export 2- P + Q -C
Export 3- P - Q -L
Inductive means Current lags Voltage
Capacitive means Current leads Voltage
Inductive
Capacitive
Capacitive Inductive
Note : Though meter displays Active power ( P )with “ + ” ( Positive sign )
or “ - ” ( negative sign ) depending on External CT Connection,
Energy (kWh ) integration will be in done same register irrespective
of Import or Export connection
8.1 EMC Installation Requirements
This product has been designed to meet the certification of the EU directives
when installed to a good code of practice for EMC in industrial environments,
e.g.
1. Screened output and low signal input leads or have provision for fitting
RF suppression components, such as ferrite absorbers, line filters etc., in
the event that RF fields cause problems.
Note: It is good practice to install sensitive electronic instruments that are
performing critical functions, in EMC enclosures that protect against electrical
interference which could cause a disturbance in function.
2. Avoid routing leads alongside cables and products that are, or could be, a
source of interference.
4. ESD precautions must be taken at all times when handling this product.
3. To protect the product against permanent damage, surge transients must
be limited to 2kV pk. It is good EMC practice to suppress differential
surges to 2kV at the source. The unit has been designed to automatically
recover in the event of a high level of transients. In extreme
circumstances it may be necessary to temporarily disconnect the
auxiliary supply for a period of greater than 5 seconds to restore correct
operation.
The Current inputs of these products are designed for connection in to
systems via Current Transformers only, where one side is grounded.
8.2 Case Dimension and Panel Cut Out
3.78”
96mm
FRONT DISPLAY
AREA
3.78”
96mm
3.15”
80mm
3.62”
92mm
PANEL CUTOUT
3.62”
92mm
MAX PANEL THICKNESS 0.18”,5mm
8.4 Auxiliary Supply
Meter should ideally be powered from a dedicated supply, however
it may be powered from the signal source, provided the source remains within
the limits of the chosen auxiliary voltage.
8.5 Fusing
It is recommended that all voltage lines are fitted with 1 amp HRC fuses.
8.6 Earth/Ground Connections
For safety reasons, CT secondary connections should be grounded in
accordance with local regulations.
8.3 Wiring
Input connections are made directly to screw-type terminals with indirect
wire pressure. Numbering is clearly marked in the plastic moulding. Choice of
cable should meet local regulations. Terminal for both Current and Voltage
2
inputs will accept upto 3mm x 2 diameter cables.
Note : It is recommended to use wire with lug for
connection with meter.
Single Phase
DIGITAL METERING SYSTEM
2 5 8 11 1 3 4 6 7 9
13
14
L N
AUX
SUPPLY
P1 S1
L
N
L
O
A
D
9.1 Network Wiring
9. Connection Diagram
12
Operating Measuring Ranges
Voltage 5 .. 120 % of Rated Value
Current 5 .. 120 % of Rated Value
Frequency 40 .. 70 Hz
System CT primary values Std. Values upto 4kA (1 or 5 Amp secondaries)
10. Specification :
System
1 Phase 2 Wire (Single Phase)
Inputs
Nominal input voltage
Max continuous input
voltage
Max short duration input
voltage
Nominal input voltage burden
57.7 V to 277V
L-N L-N
120% of Rated Value
2 x Rated Value
(1s application repeated 10 times
at 10s intervals)
0.2VA approx. per phase
Nominal input current 1A OR 5A AC rms
Max continuous input current 120% of Rated Value
Nominal input current burden 0.6VA approx. per phase
Max short duration current input 20 x (1s application repeated Rated Value
5 times at 5 min. intervals)
Auxiliary
Standard nominal Auxillary
supply
110V /50 Hz , 230V /50 Hz ,380V ,AC AC AC/50 Hz
a.c. supply voltage tolerance +20 % / -15 % of Rated Value
a.c. supply frequency range 45 to 66 Hz
a.c. supply burden 4.5V A
100 - 250V AC- DC, 12 - 48V DC
Power Factor 0.5 Lag ... 1 ... 0.8 Lead
d.c. supply burden 3W
voltages & Frequency
Accuracy
Voltage
Current
+ 0.5 % of range ( 50 ... 100% of Rated Value )
+ 0.5 % of range ( 10 ... 100% of Rated Value )
Frequency 0.15% of mid frequency
Active Energy + 1 % as per IEC 62053-21
Active P.F. (0.5 lag ... 1 ... 0.8 lead)
+ 0.5 % of range ( 10 ... 100% of Rated Value )
Active Power
+ 0.5 % of range ( 10 ... 100% of Rated Value )
Re- Active Power
+ 0.5 % of range ( 10 ... 100% of Rated Value )
Apparent Power
Apparant Energy + 1 %
Power Factor + 1 % of Unity
Angle + 1 % of range
Reference conditions for Accuracy :
0
23 C + 2 C
50 or 60Hz + 2%
Sinusoidal (distortion factor 0.005)
Rated Value + 1 %
Reference temperature
Input frequency
Input waveform
Auxiliary supply voltage
Auxiliary supply frequency Rated Value + 1 %
0
Power Factor 0.5 lag .... 1 .... 0.8 lead
Starting Current 0.4% of Nominal Input Current
Nominal range of use of influence quantities for measurands
50 .. 120 % of Rated Value
10 .. 120 % of Rated Value
Rated Value + 10 %
0
0 to 50 C
Voltage
Current
Input frequency
Temperature
Auxiliary supply voltage
Auxiliary supply frequency
Display
10 digits .
Approx. 1 seconds
LED
Update
Controls
Two push buttons
User Interface
Standards
IEC 61326
10V/m min-Level 3 industrial low level
electromagnetic radiation environment
IEC 61000-4-3.
IEC 61010-1 , Year 2001
EMC Immunity
Safety
Isolation
2.2 kV RMS 50 Hz for 1 minute
between all electrical circuits
Dielectric voltage withstand
test between circuits and
accessible surfaces
Temperature Coefficient 0
0.025% / C for Voltage (50..120% of Rated Value)
0
(For Rated value range of use
Error change due to variation of an
influence quantity
2 * Error allowed for the reference
condition applied in the test.
Rated Value + 10 %
Rated Value + 10 %
0.05% / C for Current ( 10..120% of Rated Value )
0
0... 50 C )
IEC 60529
IP for water & dust
Self extinguish & non dripping as per UL 94 V-0
Environmental
0
-10 to 55 C
0
-20 to +65 C
0 .. 90 % RH
3 minute (minimum)
15g in 3 planes
10 .. 55 Hz, 0.15mm amplitude
IP 54 as per IEC 60529
Operating temperature
Storage temperature
Relative humidity
Warm up time
Shock
Vibration
Enclosure ( front only )
Enclosure
96mm x 96mm DIN Quadratic
Polycarbonate Housing ,
Screw-type terminals
< 80 mm
0.620 kg Approx.
Style
Material
Terminals
Depth
Weight
ModBus ( RS 485 ) Option :
ModBus ( RS 485 )
Protocol
19200 , 9600 , 4800 or 2400
Baud Rate
( Programmable )
Odd or Even, with 1 stop bit,
Parity
Or None with 1 or 2 stop bits
Impulse Rate 3600 impulses/kWh
Impulse LED
+ -

11. Connection for Optional Pulse Output / RS 485
11.1 One Pulse Output & RS485
11.2. RS 485 Output
11.3. One Pulse Output
25811 13 14
134679
25811 13 14
134679
NO NC COM
Pulse out
B A
RS 485
Notes :
The Information contained in these installation instructions is for use only by installers trained to make electrical power installations and
is intended to describe the correct method of installation for this product. However, organization has no control over the field
conditions which influence product installation.
It is the user's responsibility to determine the suitability of the installation method in the user's field conditions. Organization only
obligations are those in organization standard Conditions of Sale for this product and in no case will organization be liable for
any other incidental, indirect or consequential damages arising from the use or misuse of the products.
G
25811 13 14
134679
25811 13 14
134679
B A
RS 485
G
25811 13 14
134679
25811 13 14
134679
NO NC COM
Pulse out
13