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DKM-409 User Manual
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.
DKM-409 NETWORK
ANALYSER
WITH HARMONIC MEASUREMENT
AND SCOPEMETER
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
- 1 -
V-1.23
FEATURES
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Summary of Contents for Datakom DKM-409-S
- Page 1 DKM-409 User Manual V-1.23 DKM-409 NETWORK ANALYSER WITH HARMONIC MEASUREMENT AND SCOPEMETER FEATURES INTRODUCTION True RMS measurements The DKM-409 is a precision instrument Harmonic distortion display ( 31 harmonics) designed for displaying various AC Oscilloscope, waveform display parameters in 3-phase distribution panels. Max demand display Thanks to its isolated RS-485 Modbus RTU User configurable display screen...
- Page 2 DKM-409 User Manual V-1.23 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.
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Page 3: Table Of Contents
DKM-409 User Manual V-1.23 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. -
Page 4: Installation
DKM-409 User Manual V-1.23 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. -
Page 5: Front / Rear Panels
DKM-409 User Manual V-1.23 1.1 FRONT / REAR PANELS 1.2 MECHANICAL INSTALLATION Panel Cutout Required Panel Depth - 5 -... -
Page 6: Electrical Installation
DKM-409 User Manual V-1.23 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. -
Page 7: Connection Diagram For 230/400V Network
DKM-409 User Manual V-1.23 1.4 CONNECTION DIAGRAM FOR 230/400V NETWORK - 7 -... -
Page 8: Connection Diagram For 120/208V Network
DKM-409 User Manual V-1.23 1.5 CONNECTION DIAGRAM FOR 120/208V NETWORK - 8 -... -
Page 9: Pushbutton Functions
DKM-409 User Manual V-1.23 2. PUSHBUTTON FUNCTIONS Three buttons on the front panel provide access to configuration and measurement screens. BUTTON FUNCTION Previous screen Decrease related value (configuration mode) Next screen Increase related value (configuration mode) Changes voltage and current channels for ... -
Page 10: Display Navigation
DKM-409 User Manual V-1.23 3. DISPLAY NAVIGATION - 10 -... -
Page 11: Display Screen
DKM-409 User Manual V-1.23 4. DISPLAY SCREEN 4.1 DISPLAY SCREEN DETAILS Display 1 Display 2 Display 3 DATAKOM LOGO U1-2 (V) V1-N (V) Software version U2-3 (V) V2-N (V) U3-1 (V) V3-N (V) Frequency (Hz) Frequency (Hz) Display 4 Display 5... -
Page 12: Phase Sequence Display
DKM-409 User Manual V-1.23 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. -
Page 13: Display Symbols
DKM-409 User Manual V-1.23 5. DISPLAY SYMBOLS SYMBOL DESCRIPTION Software version Phase 1 to phase 2 AC RMS voltage value Phase 2 to phase 3 AC RMS voltage value Phase 3 to phase 1 AC RMS voltage value Frequency value Phase 1 to Neutral AC RMS voltage value Phase 2 to Neutral AC RMS voltage value Phase 3 to Neutral AC RMS voltage value... -
Page 14: Setting Auto-Scroll Mode
DKM-409 User Manual V-1.23 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. -
Page 15: Device Configuration
DKM-409 User Manual V-1.23 8. DEVICE CONFIGURATION 8.1 INTRODUCTION In order to offer the maximum flexibility to the user, the unit has several configurable parameters. Device configurations Line Configurations LCD Contrast Clearing Counters Language selection ... -
Page 16: Adjusting The Lcd Contrast
DKM-409 User Manual V-1.23 8.2 ADJUSTING THE LCD CONTRAST Select “LCD CONTRAST” on “CONFIGURATION MENU”. Change the contrast value with 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”... -
Page 17: Voltage Transformer Ratio
DKM-409 User Manual V-1.23 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. -
Page 18: Modifying The Serial Number
DKM-409 User Manual V-1.23 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”. -
Page 19: Configuring An Item's Low Or High Limit
DKM-409 User Manual V-1.23 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. - Page 20 DKM-409 User Manual V-1.23 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.
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Page 21: Input Configuration
DKM-409 User Manual V-1.23 8.11 INPUT CONFIGURATION The unit has two configurable inputs. Level transitions from high to low (NC=normally closed contact) and low to high (NO=normally open contact) may be programmed independently. There are various functions that can be assigned for each input. -
Page 22: Relay Configuration
DKM-409 User Manual V-1.23 8.12 RELAY CONFIGURATION Relay = VALUE 1 NOR VALUE 2: If at The unit has 2 relay outputs with least one of value registers is TRUE then configurable functions. the relay contact will open. Otherwise it Relays can be configured as kW or kVAr will close. -
Page 23: Resetting A Counter
DKM-409 User Manual V-1.23 A “delay before response can be set for relays. The screen below will be displayed after first two steps. Set the required delay time here. 8.13 RESETTING A COUNTER The unit offers 2 sets of active and reactive power counters together with 4 user counters. -
Page 24: Overcurrent Detector Configuration
DKM-409 User Manual V-1.23 8.15 OVERCURRENT DETECTOR CONFIGURATION The “OVERCURRENT” function is used in order to generate a protection relay output when any of the phase currents exceeds the preset value for “TIMEOUT” duration. The response time depends on the overcurrent rate as shown on below graph. OVERCURRENT AREA PERMITTED AREA A: Over current value... -
Page 25: Phase Sequence Failure
DKM-409 User Manual V-1.23 8.16 PHASE SEQUENCE FAILURE 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. -
Page 26: Return To Factory Settings
DKM-409 User Manual V-1.23 8.18 RETURN TO FACTORY SETTINGS It is possible to reset the unit to factory settings, before starting a new configuration process. For this select “RETURN FACTORY” on “CONFIGURATION MENU”. Then select “YES” and press to reset the unit to factory configuration and return to “CONFIGURATION MENU”. -
Page 27: Modbus Communications
DKM-409 User Manual V-1.23 9. MODBUS COMMUNICATIONS 9.1 DESCRIPTION The unit offers serial data communication port allowing it to be integrated in automation systems. The serial port is of RS-485 MODBUS-RTU standard. It is fully isolated from power supply and measurement terminals for failure-free operation under harsh industrial conditions. The MODBUS properties of the unit are: -Data transfer mode: RTU -Serial data: 9600 bps, 8 bit data, no parity, 1 bit stop... - Page 28 DKM-409 User Manual V-1.23 The normal response will be: Byte Description Value Controller address same as in the query Function code Data lenght in bytes (L) number of registers * 2 High byte of 1st register Low byte of 1st register High byte of 2nd register Low byte of 2nd register ..
- Page 29 DKM-409 User Manual V-1.23 Here is the sequence to write the value 0010h to the register 40h (64 decimal): 01 06 00 40 00 10 89 D2 (each byte is expressed as 2 hexadecimal characters) The checksum value in the above message may be used for the verification of checksum calculation algorithm The normal response will be the same as the query: Byte...
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Page 30: Modbus Registers
DKM-409 User Manual V-1.23 Error codes Only 3 error codes are used: 01: illegal function code 02: illegal address 10: write protection (attempt to write a read_only register) Data types Each register consists of 16 bits (2 bytes) If the data type is a byte, only the low byte will contain valid data. High byte is don’t care. For data type longer than 16 bits, consecutive registers are used. - Page 31 DKM-409 User Manual V-1.23 ADDRE NAME DESCRIPTION LENGTH R/W TYPE 40023 V1 phase to neutral voltage AC RMS V1 RMS 32 BIT R-O unsigned long value 40024 40025 V2 phase to neutral voltage AC RMS V2 RMS 32 BIT R-O unsigned long value 40026 40027...
- Page 32 DKM-409 User Manual V-1.23 ADDRE NAME DESCRIPTION LENGTH R/W TYPE 40060 40061 ∑P Active Power Total active power (kW) 32 BIT R-O signed long 40062 40063 ∑Q Reactive Total reactive power (kW) 32 BIT R-O signed long Power 40064 Cosф 1 40065 Phase 1 power factor 16 BIT...
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Page 33: Warning Registers
DKM-409 User Manual V-1.23 9.3 WARNING REGISTERS MODBUS warnings register section contains 5 x 16 bit registers, 80 bits in total. First 40 bits indicate values below set limit, last 40 bits indicate values above set limits. REG. TOTAL ADDRESS DESCRIPTION 40018 Vx RMS value below the set value... - Page 34 DKM-409 User Manual V-1.23 REG. TOTAL ADDRESS DESCRIPTION 40020 Reactive power counter 2 below the set value User counter 1 below the set value User counter 2 below the set value User counter 3 below the set value User counter 4 below the set value Reserved Reserved Reserved...
- Page 35 DKM-409 User Manual V-1.23 REG. TOTAL ADDRESS DESCRIPTION 40022 Phase 1 power factor above the set value Phase 2 power factor above the set value Phase 3 power factor above the set value Total power factor above the set value Frequency above the set value Active power counter 1 above the set value Reactive power counter 1 above the set value...
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Page 36: Technical Specifications
EN 61326 (EMC requirements) PACKAGING INFORMATION Pieces per Package: 12 pieces Package Size: 280 x 170 x 215mm (LxWxH) Package Weight: 4.4 kg DATAKOM Electronics Ltd. Tel: +90-216-466 84 60 Fax: +90-216-364 65 65 e-mail: datakom@datakom.com.tr http: www.datakom.com.tr - 36 -...
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