Datakom DKM-260 User manual

DKM-260 User Manual V-1.0
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DKM-260
The DKM-260 is a precision instrument
designed for monitoring the status of earth
leakage in a DC supply busbar. It also
measures, displays and remote monitors
various DC parameters of a DC distribution
box.
The unit features a 32-bit ARM core
microcontroller.
The unit is supplied from the busbar voltage.
It accepts from 19 to 150VDC busbar
voltage.
The current input of the unit is isolated from
the rest of the circuit and has different circuit
options:
●External current shunt (standard)
●Internal current shunt
●Hall Effect sensor input
The relay output is programmable for its
function.
Thanks to its isolated RS-485 Modbus RTU
comport, the device is free from ground
potential difference issues and data are
safely transferred to automation and
monitoring systems. Program parameters
may be uploaded to the unit through the RS-
485 port.
●Indicates ground leakage in %
●DC analyzer functionality
●Programmable relay output
●Various current input options
●Demand records
●Fully isolated RS-485 serial port
●MODBUS-RTU communications
●Front panel programming
●Wide operating temperature range
●Sealed front panel (IP65 with gasket)
●Two part connection system
DESCRIPTION FEATURES

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
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 are no serviceable parts inside.

Fuses must be connected to the power supply and voltage
inputs, in close proximity of the unit.

Fuses must be of fast type 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.

Any electrical parameter applied to the device must be
in the
range specified in the user manual. Although the unit is
designed with a wide safety margin, over-range parameters may
reduce lifetime, alter operational precision or even damage the
unit.

Do not try to clean the device with solvent or the like.
Only
clean with a dump cloth.

Verify correct terminal connections before applying power.

Only for front panel mounting.
SAFETY NOTICE
Failure to follow below instructions will result in
death or serious injury

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Section
1. INSTALLATION INSTRUCTIONS
1.1 FRONT AND BACK PANELS
1.2 ELECTRICAL INSTALLATION
1.3 INSTALLATION DIAGRAM
2. PUSHBUTTON FUNCTIONS
3. SCREEN NAVIGATION
4. PROGRAMMING
4.1 ENTERING THE PROGRAMMING MODE
4.2 RESETTING DEMANDS
4.3 RESETTING ALARMS
4.4 ADJUSTING CURRENT MEASUREMENT INPUT
4.5 ADJUSTING EARTH LEAKAGE HIGH AND LOW LIMIT
4.6 ADJUSTING VOLTAGE HIGH AND LOW LIMIT
4.7 ADJUSTING CURRENT HIGH LIMIT
4.8 ADJUSTING THE DEMAND PERIOD
4.9 SELECTING RELAY FUNCTION
4.10 ALARM CONFIGURATION
4.11 MODBUS PARAMETERS
4.12 DISPLAYING THE FIRMWARE VERSION
4.13 CALIBRATION
4.14 LAMP TEST
5. MODBUS COMMUNICATIONS
5.1. DESCRIPTION
5.2. COMMANDS
5.3. PROGRAM PARAMETERS
5.4. MEASUREMENTS AND CONTROLLER RECORDS
6. TECHNICAL SPECIFICATIONS
TABLE OF CONTENTS

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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 damage the enclosure.
Make electrical connections with plugs removed from sockets, then place plugs to their sockets.
Be sure that adequate cooling is provided.
Be sure that the temperature of the environment will not exceed the maximum operating temperature in any
case.
Be sure that the unit is not subject to water spill.
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.
Voltage applied to digital inputs over specified range.
Connecting or removing data terminals when the unit is powered-up.
High voltage applied to communication ports.
Excessive vibration, direct installation on vibrating parts.
Below conditions may cause abnormal operation:
Power supply voltage below minimum acceptable level.
Current Shunt must be used for current measurement.
No direct connection allowed .
INSTALLATION INSTRUCTIONS

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1.1 FRONT AND BACK PANELS

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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 voltage inputs, in close proximity
of the unit.
 Fuses must be of fast type with a maximum rating of 6A.
 Use cables of appropriate temperature range.
 Use adequate cable section, at least 0.75mm
2
(AWG18).
 Follow national rules for electrical installation.
Current Shunt must be used for current measurement.
No direct connection allowed .
Do not install the unit close to high electromagnetic
noise emitting devices like contactors, high current
busbars, switchmode power supplies and the like.
1.2 ELECTRICAL INSTALLATION

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1.3 INSTALLATION DIAGRAM

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Programlama ve ölçüm ekranlarına ön paneldeki 3 adet buton sayesinde ulaşılır.
BUTTON FUNCTION
PROGRAMMING: Save adjusted parameter and exit
adjusting mode.
Enter adjusting mode.
Switch to the upper screen.
PROGRAMMING: increase value
Switch to the lower screen.
PROGRAMMING: decrease value
HELD PRESSED TOGETHER FOR 2 SECONDS:
Selects programming mode. If held pressed in
programming mode, then returns to normal mode.
NO KEY PRESSED DURING 1 MINUTE:
Returns to the selected main display screen.
2. PUSHBUTTON FUNCTIONS

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Buttons allow navigation between measurement values.
The first screen displays voltage in volts (V), second screen displays current in amperes (A)
and the third screen displays earth leakage in percantage (%) unit. If no led is on then it
means that these are instantaneous measured values. However, if DEMAND led is on
these values are demand values.
Display of measured current: If the measured current value is below 100A, then it is
displayed with 0.01A precision. Between 100A and 1000A it is displayed with 0.1A
precision. Between 1000A and 10000A it is displayed with 1A precision.
Display of measured voltage: If the measured voltage value is below 100V then it is
displayed with 0.01V precision. If the voltage is between 100V and 1000V it is displayed
with 0.1V precision. Between 1000V and 10000V the voltage is displayed with 1 V
precision.
Alarm display: Alarms are displayed by leds on front panel. When a high or low voltage
alarm occurs, led “V” turns on. When an overcurrent alarm occurs, led “A” turns on. When a
positive earth leakage alarm occurs, led “+KAÇAK” turns on and when a negative earth
leakage alarm occurs, led “-KAÇAK” turns on.
3. SCREEN NAVIGATION

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In order to offer the maximum flexibility to the customer, the module has several
programmable parameters.
Measurement configurations
Demand reset
Alarm reset
Current shunt configuration
Alarm high/low limit adjustments
Input/Output Configurations
Alarm configuration
Modbus configuration
Unit Calibration
In order to enable the programming menu,
hold both MENU buttons pressed for 2 seconds.
In order to exit programming menu,
hold both MENU buttons pressed for 2 seconds.
If no button is pressed during 1 minute, then the unit
will automatically close the programming mode.
Parameter values are modified with UP and DOWN
Menu buttons. If the button is held pressed, the the
value will change with larger steps.
When SET button is pressed, the value on the
screen is recorded and the unit exits the adjusting
mode.
Held pressed for 5 seconds on display screen to
clear all alarms.
4. PROGRAMMING
4.1 ENTERING THE PROGRAMMING MODE

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Parameter value
0: No operation
1: Reset demand counters
Setting this parameter to 1 causes demand and max_demand values to
be reset.
The parameter value is not saved and always reads 0.
Parameter value
0: No operation
1: Reset alarms
Setting this parameter to 1 causes alarms to be reset.
The parameter value is not saved and always reads 0.
4.2 RESETTING DEMANDS
4.3 RESETTING ALARM

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This parameter adjusts the rated value of the current shunt in
amperes.
The factory set value is 40A
Adjustement range is between 1 and 3200amperes
This parameter adjusts the rated voltage of the current shunt in
milivolts.
The factory set value is 60mV
Adjustement range is between 1 and 100milivolts.
Bu parametre toprak kaçak için toprak geriliminin girişgerilimine
oranının üst limitini ayarlar.
Standart fabrika çıkışdeğeri 70% ‘dir.
Ayar aralığı 0 V ile 100 arasıdır.
Bu parametre toprak kaçak için toprak geriliminin girişgerilimine
oranının alt limitini ayarlar.
Standart fabrika çıkışdeğeri 30 % ‘dir.
Ayar aralığı 0 ile 100 arasıdır.
4.4 ADJUSTING CURRENT MEASUREMENT INPUT
4.5 ALT VE ÜST TOPRAK KAÇAK LİMİTLERİNİN AYARLANMASI

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This parameter adjusts the upper limit of the high voltage alarm.
If this parameter is set to 300 then high voltage is not monitored and
no alarm occurs.
Factory set value is 300V
Adjustment range is between 0 and 300V
This parameter adjusts the lower limit of the low voltage alarm.
If this parameter is set to 0 then low voltage is not monitored and no
alarm occurs.
Factory set value is 0 V
Adjustment range is between 0 and 300V
This parameter adjusts the overcurrent limit.
If this parameter is adjusted to 2000 then the overcurrent limit is not
monitored and the overcurrent alarm does not occur.
Factory set value is 2000 A
Adjustment range is between 0 A and 2000 A
4.6 ADJUSTING VOLTAGE LOW AND HIGH LIMITS
4.7 ADJUSTING CURRENT HIGH LIMIT

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This parameter determines the demand period for voltage, current
and power measurements. The average value is calculated during the
demand period and at the end of the period new demand values
overwrite older values.
Factory set value is 15 minutes.
Adjustment range is 1 to 240 minutes.
This parameter determines the relay function which dedicates using
relay in which alarm(s) .
Factory set value is 8.
According to parameter value, Alarms, which use relay, are as below:
0: Earth Leakage (+)
1: Earth Leakage (-)
2: High Voltage
3: Low Voltage
4: Overcurrent
5: Earth Leakage (+) or Earth Leakage (-)
6: High or Low Voltage
7: High or Low Voltage or Overcurrent
8: All alarm cases
Adjustment range is 0 to 8.
4.8 ADJUSTING THE DEMAND PERIOD
4.9 SELECTING RELAY FUNCTION

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This parameter determines the delay between an earth leakage alarm
condition occurs and the alarm given.
Factory set value is 10.
Adjustment range is 0 to 255 seconds.
0:
Earth leakage alarm lock disabled
1: Earth leakage alarm lock enabled
When this parameter is set to 1, even if the alarm cause is removed,
alarms will persist until manually reset.
When this parameter is set to 0, when the alarm cause is removed,
alarms automatically disappear.
Factory set value is 0.
Adjustment range is 0 to 1.
This parameter determines the delay between a high or low valtage
alarm condition occurs and the alarm given.
Factory set value is 5.
Adjustment range is 0 to 255 seconds.
0: High or low voltage alarm lock disabled
1: High or low voltage alarm lock enabled
When this parameter is set to 1, even if the alarm cause is removed,
alarms will persist until manually reset.
When this parameter is set to 0, when the alarm cause is removed,
alarms automatically disappear.
Factory set value is 0.
4.10 ALARM CONFIGURATION

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Adjustment range is 0 to 1.
This parameter determines the delay between a high current alarm
condition occurs and the alarm given.
Factory set value is 3.
Adjustment range is 0 to 255 seconds.
0: High current alarm lock disabled
1: High current alarm lock enabled
When this parameter is set to 1, even if the alarm cause is removed,
alarms will persist until manually reset.
When this parameter is set to 0, when the alarm cause is removed,
alarms automatically disappear.
Factory set value is 0.
Adjustment range is 0 to 1.

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This parameter determines the Modbus node address of the unit.
Every unit in the same Modbus loop must have a different node
address.
Factory set value is 1.
Adjustment range is 0 to 245.
This parameter determines the data rate (baud rate) used in the
Modbus communication. Every unit in the same Modbus loop must
use the same data rate.
0: Baud rate = 2400
1: Baud rate = 4800
2: Baud rate = 9600
3: Baud rate = 19200
4: Baud rate = 38400
Factory set value is 2.
Adjustment range is 0 to 4.
If this parameter is set to a value different from 0, then the unit will
require this parameter as a password prior to Modbus writes or
Modbus commands.
If the parameter is set to 0 then no password is required.
Factory set value is 0.
Adjustment range is 0 to 9999.
4.11 MODBUS PARAMETERS

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The firmware version is displayed in te second line of the “end
end end
end , End”
screen.
Any inquiry to the manufacturer must state the firmware version in
question.
The unit leaves the production in a calibrated status.
If recalibration is required, enter the password “3282” to the third line
of the “end
end end
end , End” screen and press the SET button.
The calibration screen about the 110V voltage input will be seen. The
first display will show “110V”. The second screen will display the
measured instantaneous voltage from the input. The third display will
display the calibration coefficient (high 4 digits only)
Adjust UP and DOWN menu buttons until the value displayed in the
second screen is correct.
When the value is correct then press SET button. The unit will switch
to first current input sensitivity calibration.
4.12 DISPLAYING THE FIRMWARE VERSION
4.13 CALIBRATION

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In the first current input sensitivity calibration mode, the first display
will show “1CUR”. The second screen will display the measured
instantaneous current from the input. The third display will display the
calibration coefficient (high 4 digits only)
Adjust UP and DOWN menu buttons until the value displayed in the
second screen is correct.
When the value is correct then press SET button. The unit will switch
to second current input sensitivity calibration.
The second current input is internal and makes a more precise
measurement in low currents. The switching between two internal
inputs is automatic. Between -10mV and +10mV the sensitive input is
used. Above this signal amplitude the normal input is active.
In the second current input sensitivity calibration mode, the first
display will show “2CUR”. The second screen will display the
measured instantaneous current from the input. The third display will
display the calibration coefficient (high 4 digits only)
Adjust UP and DOWN menu buttons until the value displayed in the
second screen is correct.
When the value is correct then press SET button. The unit will switch
to earth leakage input calibration.
In earth leakage input calibration mode, the first display will show
“EARH”. The second screen will display the measured instantaneous
voltage from the input. The third display will display the calibration
coefficient (high 4 digits only)
Adjust UP and DOWN menu buttons until the value displayed in the
second screen is correct.
When the value is correct then press SET button. The unit will switch
to 110v input calibration.

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When programming is over, hold pressed UP and DOWN MENU
buttons for 2 seconds.
The unit will exit program mode and will turn on all lights for lamp
testing purpose.
Check that all lights are on.
Press any button to resume normal operation.
4.14 LAMP TEST