Datakom DKM-409 User manual

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http://www.datakom.com.tr
Tel: [phone]
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DKM-409 NETWORK ANALYSER
WITH HARMONIC MEASUREMENT AND SCOPEMETER
INTRODUCTION
The DKM-409 is a precision instrument
designed for displaying various AC
parameters in 3-phase distribution panels.
Thanks to its isolated RS-485 Modbus RTU
communication port, the device is free from
ground potential difference issues and
measured parameters are safely transferred
to factory and building automation systems.
The power supply of the unit is isolated, thus
the same device can be used in both
230/400V and 120/208V systems.
The graphic screen allows display of
waveforms and harmonic analysis graphs.
Various display screens can be scrolled
automatically. The user configurable screen
where any measured parameter set can be
displayed, transforms the unit to a custom
designed measurement panel.
FEATURES
True RMS measurements
Harmonic distortion display ( 31 harmonics)
Oscilloscope, waveform display
Max demand display
User configurable display screen
Fully isolated RS-485 serial port
MODBUS-RTU communication
2 configurable relay outputs
Energy pulse output capability
Optically isolated, configurable digital inputs
Switched dual active-reactive power counters
Independent mains/generator energy metering
Configurable user counters
Voltage transformer ratio for MV applications
Password protected front panel programming
High visibility, 128x64 pixels graphic LCD
Reduced panel depth
Wide operating temperature range
Sealed front panel (IP54)
Plug-in connection system

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SAFETY NOTICE
Failure to follow below instructions will
result in death or serious injury
•
Electrical equipment should be installed only by qualified
specialist. No responsibility is assured by the
manufacturer or any of its subsidiaries for any
consequences resulting from the non-compliance to
these instructions.
•
Check the unit for cracks and damages due to
transportation. Do not install damaged equipment.
•Do not open the unit. There is no serviceable parts inside.
•
Fuses must be connected to the power supply and phase
voltage inputs, in close proximity of the unit.
•
Fuses must be of fast type (FF) with a maximum rating of
6A.
•
Disconnect all power before working on equipment.
•
When the unit is connected to the network do not touch
terminals.
•
Short circuit terminals of unused current transformers.
•
Any electrical parameter applied to the device must be in
the range specified in the user manual.
•
Do not try to clean the device with solvent or the like.
Only clean with a dry cloth.
•
Verify correct terminal connections before applying
power.
•
Only for front panel mounting.

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TABLE OF CONTENTS
Section
1. INSTALLATION
1.1. FRONT / REAR PANELS
1.2. MECHANICAL INSTALLATION
1.3. ELECTRICAL INSTALLATION
1.4. CONNECTION DIAGRAM FOR 230/400V NETWORK
1.5. CONNECTION DIAGRAM FOR 120/208V NETWORK
2. PUSHBUTTON FUNCTIONS
3. DISPLAY NAVIGATION
4. DISPLAY SCREEN
4.1. DISPLAY SCREEN DETAILS
4.2. PHASE SEQUENCE DISPLAY
5. DISPLAY SYMBOLS
6. SETTING AUTO-SCROLL MODE
7. RESETTING VISUAL WARNINGS
8. DEVICE CONFIGURATION
8.1. INTRODUCTION
8.2. ADJUSTING THE LCD CONTRAST
8.3. LANGUAGE SELECTION
8.4. CURRENT TRANSFORMER RATIO
8.5. VOLTAGE TRANSFORMER RATIO
8.6. MODBUS ADDRESS
8.7. CHANGING THE PASSWORD
8.8. MODIFYING THE SERIAL NUMBER
8.9. USER DISPLAY PAGE CONFIGURATION
8.10. CONFIGURING AN ITEM’S LOW OR HIGH LIMIT
8.11. INPUT CONFIGURATION
8.12. RELAY CONFIGURATION
8.13. RESETTING A COUNTER
8.14. RESETTING DEMAND VALUES
8.15. OVERCURRENT DETECTOR CONFIGURATION
8.16. PHASE SEQUENCE FAILURE
8.17. RESETTING LOW/HIGH LIMITS
8.18. RETURN TO FACTORY SETTINGS
8.19. CALIBRATION
9. MODBUS COMMUNICATIONS
9.1. DESCRIPTION
9.2. MODBUS REGISTERS
9.3. WARNING REGISTERS
10. TECHNICAL SPECIFICATIONS

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1. INSTALLATION
Before installation:
•Read the user manual carefully, determine the correct connection diagram.
•Remove all connectors and mounting brackets from the unit, then pass the unit through
the mounting opening.
•Put mounting brackets and tighten. Do not tighten too much, this can brake the
enclosure.
•Make electrical connections with plugs removed from sockets, then place plugs to their
sockets.
•Note that the power supply terminal is separated from measurement terminals.
Below conditions may damage the device:
•Incorrect connections.
•Incorrect power supply voltage.
•Voltage at measuring terminals beyond specified range.
•Current at measuring terminals beyond specified range.
•Connecting or removing data terminals when the unit is powered-up.
•Overload or short circuit at relay outputs
•Voltage applied to digital inputs over specified range.
•High voltage applied to communication port.
Below conditions may cause abnormal operation:
•Power supply voltage below minimum acceptable level.
•Power supply frequency out of specified limits
•Phase order of voltage inputs not correct.
•Current transformers not matching related phases.
•Current transformer polarity incorrect.

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1.1 FRONT / REAR PANELS
1.2 MECHANICAL INSTALLATION
Panel Cutout Required Panel Depth

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1.3 ELECTRICAL INSTALLATION
Do not install the unit close to high electromagnetic noise
emitting devices like contactors, high current busbars,
switchmode power supplies and the like.
Although the unit is protected against electromagnetic disturbance, excessive disturbance
can affect the operation, measurement precision and data communication quality.
•ALWAYS remove plug connectors when inserting wires with a screwdriver.
•Fuses must be connected to the power supply and phase voltage inputs, in close
proximity of the unit.
•Fuses must be of fast type (FF) with a maximum rating of 6A.
•Use cables of appropriate temperature range.
•Use adequate cable section, at least 0.75mm
2
(AWG18).
•For current transformer inputs, use at least 1.5mm
2
section (AWG15) cable.
•The current transformer cable length should not exceed 1.5 meters. If longer
cable is used, increase the cable section proportionally.
•Follow national rules for electrical installation.
•Current transformers must have 5A output.
•For the RS-485 connection, use appropriate shielded twisted wire cable.
Communication quality will depend highly on the cable used.

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1.4 CONNECTION DIAGRAM FOR 230/400V NETWORK

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1.5 CONNECTION DIAGRAM FOR 120/208V NETWORK

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2. PUSHBUTTON FUNCTIONS
Three buttons on the front panel provide access to configuration and measurement
screens.
BUTTON FUNCTION
Previous screen
or
Decrease related value (configuration mode)
Next screen
or
Increase related value (configuration mode)
Changes voltage and current channels for
•scopemeter display
•harmonic display
•digital harmonic display
Available channels: U12-U23-U31- V1-V2-V3- I1-I2-I3
HELD PRESSED FOR 3 SEC:
enable/disable auto-scroll function
HELD PRESSED TOGETHER FOR 3 SEC:
•Clears visual warning condition if any.
•If no warning condition, enters configuration mode.

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3. DISPLAY NAVIGATION

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4. DISPLAY SCREEN
4.1
DISPLAY SCREEN DETAILS
Display 1
DATAKOM LOGO
Software version
Display 2
U1-2 (V)
U2-3 (V)
U3-1 (V)
Frequency (Hz)
Display 3
V1-N (V)
V2-N (V)
V3-N (V)
Frequency (Hz)
Display 4
I1 (A)
I2 (A)
I3 (A)
U1-2 (V)
Display 5
P1 Active power (kW)
P2 Active power (kW)
P3 Active power (kW)
Total Active Power
Display 6
Q1Reactive power(kVAr)
Q2Reactive power(kVAr)
Q3Reactive power(kVAr)
Total Reactive Power
Display 7
Total active power (kW)
Total reactive power (kVAr)
Power factor
Total active energy (kWh)
Display 8
Total active power (kW)
Total reactive power (kVAr)
Power factor
Total reactive energy (kVArh)
Display 9
Total apparent power (kVA)
Total active power (kW)
Total reactive power (kVAr)
Power factor
Display 10
I1 (A) demand value
I2 (A) demand value
I3 (A) demand value
P (kW) demand value
Display 11
USR1 – User counter 1
USR2 – User counter 2
USR3 – User counter 3
USR4 – User counter 4
Display 12
CT x VT ratio
Transmission speed (bps)
Modbus address
Instrument serial number
Display 13
Time Display Screen
Channel time curve
Channel frequency
Channel value (V/A)
Display 14
Harmonic Display Screen
Channel harmonic bars
Channel frequency
Channel value (V/A)
Display 15
Channel Harmonic List
(1-31 %)
Display 16
User configurable screen
Default values are:
USR1 USR4 – User counters

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4.2
PHASE SEQUENCE DISPLAY
The unit checks continuously the sequence of AC phase voltages.
If voltages are in the correct sequence, below symbol appears on voltage display pages,
namely pages 2 and 3
If voltages are in wrong order, the symbol disappears.
The effect of phase sequence failure is configurable. It can be a visual warning, a relay
output or nothing.
To learn more about the phase sequence failure output, please review the section PHASE
SEQUENCE FAILURE in the CONFIGURATION menu.

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5. DISPLAY SYMBOLS
SYMBOL
DESCRIPTION
ver
Software version
U12 Phase 1 to phase 2 AC RMS voltage value
U23 Phase 2 to phase 3 AC RMS voltage value
U31 Phase 3 to phase 1 AC RMS voltage value
FRQ Frequency value
V1
Phase 1 to Neutral AC RMS voltage value
V2 Phase 2 to Neutral AC RMS voltage value
V3
Phase 3 to Neutral AC RMS voltage value
I1 Phase 1 AC RMS current value
I2 Phase 2 AC RMS current value
I3 Phase 3 AC RMS current value
P1 Phase 1 active power (kW) value
P2
Phase 2 active power (kW) value
P3 Phase 3 active power (kW) value
∑P
Total active power (kW) value
Q1 Phase 1 reactive power (kVAr) value
Q2 Phase 2 reactive power (kVAr) value
Q3 Phase 3 reactive power (kVAr) value
∑Q Total reactive power (kVAr) value
S1
Phase 1 apparent power (kVA) value
S2 Phase 2 apparent power (kVA) value
S3
Phase 3 apparent power (kVA) value
∑S Total apparent power (kVA) value
Cos1 Phase 1 power factor
Cos2
Phase 2 power factor
Cos3 Phase 3 power factor
∑Cos
Power factor
Pc1 Active power counter 1 (kWh)
Pc2 Active power counter 2 (kWh)
Qc1 Reactive power counter 1 (kVArh)
Qc2 Reactive power counter 2 (kVArh)
I1mx
Phase 1 maximum apparent current value
I2mx Phase 2 maximum apparent current value
I3mx
Phase 3 maximum apparent current value
Pmax Total active power maximum value
USR1 User counter 1
USR2 User counter 2
USR3 User counter 3
USR4
User counter 4
VTxIT Current Transformer Ratio x Voltage Transformer Ratio
BAUD
Transmission speed (bps)
MODBUS Modbus node address
SERIAL Instrument serial number
I Power factor is inductive
C Power factor is capacitive
H1-H31
Harmonic values

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6. SETTING AUTO-SCROLL MODE
The unit offers the possibility of automatically scanning of all display screens.
In order to enable auto-scroll function hold
the SET button pressed for 3 seconds.
In order to disable auto-scroll function hold
the SET button pressed for 3 seconds.
When the auto-scroll is enabled, the unit will switch to the next screen every 5 seconds.
7. RESETTING VISUAL WARNINGS
In order to reset visual warnings, hold
both MENU buttons pressed for 3
seconds.
If no fault conditions exists this will
enable the configuration menu.

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8. DEVICE CONFIGURATION
8.1 INTRODUCTION
In order to offer the maximum flexibility to the user, the unit has several configurable
parameters.
•Device configurations
LCD Contrast
Language selection
Modbus node address
User display screen
configuration
•Input/Output Configurations
Reference value setting
Input Configurations
Relay Configurations
•Line Configurations
Clearing Counters
Resetting demand values
Overcurrent configuration
Setting the current transformer ratio
Setting the voltage transformer ratio
Input calibration
•Return to factory settings
In order to enable the configuration menu,
hold both MENU buttons pressed for 3 seconds.
When the configuration mode is entered, the
password entry screen will be displayed.
A 4 digit password must be entered using buttons.
The factory default password is “9876”. Each digit
is adjusted with MENU buttons and the next digit is
selected with SET button.
When the configuration mode is entered, a list of
available configuration topics will be displayed as
in the below screen.
In order to exit the configuration menu,
hold both MENU buttons pressed for 3 seconds.
If no button is pressed, the unit will automatically
close the configuration menu after 30 seconds.
Navigation on the list is made with and
buttons. Selected configuration topic is shown in
reverse video (black on white). In order to enter
inside a configuration topic, please press
button.

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8.2 ADJUSTING THE LCD CONTRAST
Select “
LCD CONTRAST
” on “
CONFIGURATION
MENU”. Change the contrast value with and
until best visibility is obtained and then press
to save new LCD contrast value and return
back to “CONFIGURATION MENU”.
.
8.3 LANGUAGE SELECTION
Select “
LANGUAGE
” on “
CONFIGURATION
MENU”. Change language with and
until the desired language is selected and then
press to save the new language and return to
“CONFIGURATION MENU” again.
8.4 CURRENT TRANSFORMER RATIO
For the correct current measurement, the current
transformer ratio has to be set properly.
The secondary of the current transformer is always
supposed to be 5 Amps. Only the primary value is
set.
Select “CRNT TRF RATIO” on “CONFIGURATION
MENU”.
Then adjust the current transformer ratio with
and buttons until required value then press
button to save the new current transformer
ratio and return to “CONFIGURATION MENU”.

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8.5 VOLTAGE TRANSFORMER RATIO
If a voltage transformer is used, then its ratio
needs to be set to the unit.
The voltage transformer ratio is defined as primary
voltage / secondary voltage. The secondary is
always supposed 1.0. Thus only the primary is
programmed.
Select “VOLT TRF RATIO” on “CONFIGURATION
MENU”.
Adjust the voltage transformer ratio with and
buttons until required value then press
button to save new voltage transformer ratio and
return to “CONFIGURATION MENU”.
8.6 MODBUS ADDRESS
Select “
MODBUS ADDRESS
” on
“CONFIGURATION MENU”. Change the modbus
node address with and until the
desired address is displayed and then press
to save the new modbus node address and return
to “CONFIGURATION MENU” again.
8.7 CHANGING THE PASSWORD
Select “
CHANGE PASSWORD
” on
“CONFIGURATION MENU”.
Write new password with MENU buttons. Every
depression of button will switch to the next
digit.
Long press (3 sec) to save the new
password and return to “CONFIGURATION
MENU” again.

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8.8 MODIFYING THE SERIAL NUMBER
The unit holds a user definable 16 characters
serial number.
Every character can take values between 0-9 and
A-Z.
The default value of serial number is
“0000000000000000”.
Select “SERIAL NUMBER” on “CONFIGURATION
MENU”. Write new serial number with MENU
buttons. Every depression of button will
switch to the next character.
Long press (3 sec) to save new serial
number and return to “CONFIGURATION MENU”
again.
8.9 USER DISPLAY PAGE CONFIGURATION
The unit offers a user-configurable screen (display
page 16) through “USER MENU” topic.
There are 2 sizes of characters that can be
selected (5x7 and 10x14 pixels).
Select the character size with and , and
then press to select item menu.
Select an item to display on “SELECT AN ITEM”
menu, then press .
This will return to character type selection menu
for the next displayed item.
As long as the screen setting continues, the
current status the user display page is constantly
displayed.
The display configuration will resume when there
is no place to show another item.
The user can terminate anytime by long pressing
(3 sec) the button.

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8.10 CONFIGURING AN ITEM’S LOW OR HIGH LIMIT
Select “
REFERENCE CNFG
” on
“CONFIGURATION MENU”. Select low limit
(minimum acceptable value) or high limit
(maximum acceptable value) of the item to
configure then press .
Then select the item to configure on the list and
press again.
After selection of the item, the limit value should be
entered. Especially for power or user counters,
large values may be needed. Thus the user must
select the multiplier first (‘x1’,’x100’ or ‘x1000’).
For example; ‘x10’ means “multiply set value by
10”. Then the user will enter a smaller value.
The format of the value is “000000.0” and can be
between 0.0 and 999999.9

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After entering the limit value of the item, the action
to be taken when the condition occurs has to be
selected.
LOCK means that, once the condition occurs, it
will persist until manually reset by the user.
Otherwise the condition will reset automatically
when the event causing the condition goes off.
The user can select between actions to be taken
when the condition occurs.
”VISUAL WARNING” means there is no output
function, but a message is displayed on the
screen.
The unit has 2 internal relays and each one has
four input registers referred as “VALUE-1”,
“VALUE-2”, “VALUE-3”, and “VALUE-4”.
The condition may be directed to any relay’s
VALUE registers.
VALUE registers will be used in relay
configuration.
The “RELAY CONFIGURATION” chapter will
describe in detail the use of VALUE registers.