Eastron SDM630M CT User manual

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SDM630M CT
DIN Rail Energy Meter for Single and Three Phase Electrical Systems
Measures kWh Kvarh, KW, Kvar, KVA, P, F, PF,
Hz, dmd, V, A, THD,etc.
Bi-directional measurement IMP & EXP
Two pulse outputs
RS485 Modbus
Din rail mounting 35mm
1/5A CT connection
 Better than Class 1 / B accuracy
USER MANUAL
2016 V4.7
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Introduction
This document provides operating, maintenance and installation instructions. The unit measures and displays
the characteristics of single phase two wires (1p2w), three phase three wires (3p3w,) and three phase four
wires (3p4w) supplies, including voltage, frequency, current, power, active and reactive energy, imported or
exported. Energy is measured in terms of kWh, kVArh. Maximum demand current can be measured over
preset periods of up to 60minutes. In order to measure energy, the unit requires voltage and current inputs
in addition to the supply required to power the product. The requisite current input(s) are obtained via current
transformers (CT).
This meter can be configured to work with a wide range of CTs, giving the unit a wide range of operation.
Built-in interfaces provides pulse and RS485 Modbus RTU outputs. Configuration is password protected.
This unit can be powered from a separate auxiliary (AC or DC) supply. Alternatively it can be powered
from the monitored supply, where appropriate.
Unit Characteristics
The Unit can measure and display:
Line voltage and THD% (total harmonic distortion) of all phases
Line Frequency
Currents, Current demands and current THD% of all phases
Power, maximum power demand and power factor
Active energy imported and exported
Reactive energy imported and exported
The unit has password-protected set-up screens for:
Changing password
Supply system selection 1p2w, 3p3w,3p4w
Demand Interval time
Reset for demand measurements
Pulse output duration
Two pulse output indicates real-time energy measurement. An RS485 output allows remote monitoring
from another display or a computer.
Current Transformer Primary Current
The unit can be configured to operate with CT ratio between primary current and secondary
current. The secondary CT has two options: 1A/5A
RS485 Serial - Modbus RTU
This uses an RS485 serial port with Modbus RTU protocol to provide a means of remotely
monitoring and controlling the Unit Set-up screens are provided for setting up the RS485 port.
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Pulse output
This provides two pulse outputs that clock up measured active and reactive energy. The constant
for active energy is 3200imp/kWh (Terminals 11&12). The pulse width for pulse 1(Terminals 9&10)
can be set from the set-up menu.
Start Up Screens
1 The first screen lights up all display
segments and can be used as a display
check.
2 The second screen indicates the
firmware installed in the unit and its
build number.
3 The interface performs a self-test and
indicates the result if the test passes.
*After a short delay, the screen will display active energy measurements.
Measurements
The buttons operate as follows:
1 Selects the Voltage and Current display screens in
Set-up Mode, this is the “Left” or “Back” button.
2 Select the Frequency and Power factor display
screens in Set-up Mode, this is the “Up” button
3 Select the Power display screens in Set-up Mode,
this is the “Down” button
4 Select the Energy display screens in Set-up mod
e,
this is the “Enter” or “Right” button
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Voltage and Current
Each successive pressing of the button selects a new range:
1-1 Phase to neutral voltages (3p4w)
1-2 Phase to neutral voltages (3p3w)
2 Current on each phase
3-1 Phase to neutral voltage THD% (3p4w)
3-2 Phase to neutral voltage THD% (3p3w)
4
Current THD% for each phase
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Frequency and Power factor and Demand
Each successive pressing of the button selects a new range:
1 Frequency and Power Factor (total)
2 Power Factor of each phase
3 Maximum Power Demand
4 Maximum Current Demand
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Power
Each successive pressing of the button select a new range:
1 Instantaneous Active Power in kW
2 Instantaneous Reactive Power in kVAR
3 Instantaneous Volt-amps in KVA
4 Total kW, kVARh, kVA
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Energy Measurements
Each successive pressing of the button selects a new range:
1-1 Imported active energy in kWh
1-2 Exported active energy in kWh
2-1 Imported reactive energy in kVARh
2-2 Exported reactive energy in kVARh
3-1 Total active energy in kWh
3-2 Total reactive energy in kVARh
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Setting Up
To enter set-up mode, pressing the button for 3 seconds, until the password screen
appears.
Setting up is password-protected so you must enter the correct password (default ‘1000’) before
processing. If an incorrect password is entered, the display will show: PASS Err
To exit setting-up mode, press repeatedly until the measurement screen is restored.
Set-up Entry Methods
Some menu items, such as password and CT, require a four-digit number entry while others, such
as supply system, require selection from a number of menu options.
Menu Option Selection
1) Use the and buttons to select the required item from the menu. Selection
does not roll over between bottom and top of list
2) Press to confirm your selection
3) If an item flashes, then it can be adjusted by and buttons. If not, there may
be a further layer.
4) Having selected an option from the current layer, press to confirm your selection.
The SET indicator will appear.
5) Having completed a parameter setting, press to return to a higher menu level. The
SET indicator will be removed and you will be able to use and buttons for further
menu selection.
6) On completion of all setting-up, press repeatedly until the measurement screen is
restored.
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Number Entry Procedure
When setting up the unit, some screens require the entering of a number. In particular, on entry
to the setting up section, a password must be entered. Digits are set individually, from left to
right. The procedure is as follows:
1) The current digit to be set flashes and is set using the and buttons
2) Press to confirm each digit setting. The SET indicator appears after the last digit has
been set.
3) After setting the last digit, press to exit the number setting routine. The SET indicator
will be removed.
Change password
1
Use the and to
choose the change password option
2-1
Press to enter the change
password routine. The new password
screen will appear with the first digit
flashing
2-2
Use and to set first digit
and press to confirm your
selection. The next digit will flash.
2-3
Repeat the procedure for the remaining
three digits
2-4 After setting the last digit, SET will show.
Press to exit the number setting routine and return to the Set-up menu. SET will be
removed
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DIT Demand Integration Time
This sets the period in minutes over which the current and power readings are integrated for
maximum demand measurement. The options are: off, 5, 8, 10, 15, 20, 30, 60 minutes
1
From the set-up menu, useand buttons
to select DIT option. The screen will show the currently
selected integration time.
2-1
Press to enter the selection routine. The current
time interval will flash
2-2
Use and buttons to select the tim
e
required.
2-3
Press to confirm the selection. SET indicator will
appear.
Press to exit the DIT selection routine and return to the menu.
Backlit set-up
The meter provides a function to set the blue backlit lasting time.
1 The backlit lasting time is settable Default lasting
time is 60minutes.
For example, if it’s set as 5, the backlit will be off in
5minutes from the last time operation on the meter.
Notes: If it’s set as 0, the backlit will always be on.
2
Press to enter the selection routine. The
current time interval will flash The options can be:
0/5/10/30/60/120minutes
Use
the set-up,
and buttons for selection the time required. Then press to confirm
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Supply System
Use this section to set the type of power supply being monitored.
1
From the Set-up menu, use and
buttons to select the System option. The screen
will show the currently selected power supply.
2
Press to enter the selection routine. The
current selection will flash
3-1
Use and buttons to select th
e
required system option: 1P2(W),3P3(W) ,3P4(W)
3-2
Press to confirm the selection. SET indicator
will appear.
Press to exit the system selection routine and return to the menu. SET will disappear
and you will be returned to the main Set-up Menu
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CT
The CT option sets the secondary current (CT2 1A or 5A) of the current transformer (CT) that
wires to the meter.
1
From the Set-up menu, use and
buttons to select the CT option.
2 Secondary CT setting
Press to enter the
CT secondary current
selection routine.:5A/1A
3 Set CT Ratio value
Press to enter the CT Ratio
setting screen. The range is from 0001 to
9999.
Example: If set the ratio to be 100,it means the primary current equals secondary currentx100
PT
The PT option sets the secondary voltage (PT2 100 to 500V) of the Voltage transformer (PT) that wires
to the meter.
1
From the Set-up menu, use and
buttons to select the PT option. The screen will
show the voltage PT secondary voltage value. The
default value is 400V
2 Secondary PT setting
Press to enter the PT
secondary voltage selection routine. The range is from
100 to 500V
3 Set PT ratios value
Press to enter the PT ratio screen. The
range is from 0001 to 9999
For example, if set the ratio to be 100,it means the primary voltage equals secondary
voltagex100
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Pulse output
This option allows you to configure the pulse output. The output can be set to provide a pulse for a
defined amount of energy active or reactive.
Use this section to set up the pulse output 1—Units: Total kWh, Total kVARh
1
From the Set-up menu, use and
buttons to select the Pulse output option.
2
Press to enter the selection routine.
The unit symbol will flash.
3
Use and buttons to choose
kWh or kVArh.
On completion of the entry procedure, press to confirm the setting and press
to return to the main set up menu.
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Pulse rate
Use this to set the energy represented by each pulse. Rate can be set to 1 pulse per
0.01kWh/0.1kWh/1kWh/10kWh/100/1000kWh.
(It shows 1 impulse = 10kWh/kVArh)
1
From the Set-up menu, use and
buttons to select the Pulse Rate option.
2
Press to enter the selection routine. The
current setting will flash .01/0.1/ 1/10 /100 /1000
kWh/kVARh per pulse
Use and buttons to choose pulse rate. On Completion of the entry
procedure, press to confirm the setting and press to return to the main set
up menu.
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Pulse Duration
The energy monitored can be active or reactive and the pulse width can be 200, 100 or 60ms.
(It shows pulse width of 200ms)
1-1
From the Set-up menu, use and
buttons to select the Pul
se
width option.
1-2
Press to enter the selection
routine. The current setting will flash.
Use and buttons to
choose pulse width.
On completion of the entry procedure, press to confirm the setting and press
to return to the main set up menu.
Communication
There is a RS485 port can be used for communication using Modbus RTU protocol. For Modbus
RTU, parameters are selected from Front panel.
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RS485 Address
(The range is from 001 to 247)
1
From the Set-up menu, use an
d
buttons to select the Address ID
2
Press button to enter the
selection routine. The current setting
will be flashing.
3
Use and buttons to
choose Modbus Address(001 to 247)
On completion of the entry procedure, press button to confirm the setting and press
button to return the main set-up menu.
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Baud Rate
1
From the Set-up menu, use
and buttons to select the
Baud Rate option.
2-1
Press to enter the selection
routine. The current setting will flash.
2-2
Use and buttons to
choose Baud rate 2.4k. 4.8k, 9.6k, 19.2k,
38.4k
On completion of the entry procedure, press to confirm the setting and press
to return to the main set up menu.
Parity
1
From the Set-up menu, use an
d
buttons to select the Parity
option.
2-1
Press to enter the selection
routine. The current setting will flash.
2-2
Use and buttons to
choose Parity (EVEN / ODD/ NONE)
Default is NONE.
On completion of the entry procedure, press to confirm the setting and press
to return to the main set up menu.
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Stop bits
1
From the Set-up menu, use and buttons
to select the Stop Bit option.
2-1
Press to enter the selection routine. The
current setting will flash.
2-2
Use and buttons to choose Stop
Bit (2 or 1)
On completion of the entry procedure, press to confirm the setting and press
to return to the main set up menu.
Note: Default is 1, and only when the parity is NONE that the stop bit can be changed to 2.
Stop bits
1
From the Set-up menu, use and
buttons to select the Stop Bi
t
option.
2-1
Press to enter the selection
routine. The current setting will flash.
2-2
Use and buttons to
choose Stop Bit (2 or 1)
On completion of the entry procedure, press to confirm the setting and press
to return to the main set up menu.
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CLR
The meter provides a function to reset the maximum demand value of current and power.
1
From the Set-up menu, use an
d
buttons to select the reset
option.
2
Press to enter the selection
routine. The MD will flash.
Press to confirm the setting and press to return to the main set up menu.
Reverse connected current inputs correction set-up
1
use and buttons
to select page “SET sys cont”
2-1
Press to enter Phase A ,
the default is Frd (forward)
2-2
use and buttons
to Phase B or C setting pages
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How to operate if phase A is reversely connected
1
Go to phase A setting page
2
Press to enter the selection
routine. The Frd will flash.
Use button to change Frd
to Rev.
Press to confirm the setting and press to return to the main set up menu.
Specifications Measured
Parameters
The unit can monitor and display the following parameters of a single phase two wire (1p2w),
three phase three wire (3p3w) or four phase four wire(3p4w) supply.
Voltage and Current
Phase to neutral voltages 100 to 289V a.c. (not for 3p3w supplies)
Voltages between phases 173 to 500V a.c. (3p supplies only)
Percentage total voltage harmonic distortion (THD%) for each phase to N ( not for 3p3w supplies)
Percentage voltage THD% between phases (three phase supplies only)
Current THD% for each phase
Power factor and Frequency and Max. Demand
Frequency in Hz
Instantaneous power:
Power 0 to 3600 MW
Reactive Power 0 to 3600 MVAR
Volt-amps 0 to 3600 MVA
Maximum demanded power since last Demand reset Power factor
Maximum neutral demand current, since the last Demand reset (for three phase supplies only)
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