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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 automation 
systems. 

The power supply of the unit is isolated. The 
standard unit operates between 85 and 305VAC. 
Another version operates between 19-150VDC. 

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. 

 

* 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 of fast type (FF) with a maximum 
rating of 6A must be connected to the power 
supply and phase voltage inputs, in close 
proximity of the unit. 

* 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. 

 

 

 

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. 

 

Detailed user manual of this product 

may be downloaded at: 

www.datakom.com.tr 

 

INSTALLATION

 

 

SAFETY NOTICE  
Failure to follow below 
instructions will result in 
death or serious injury

 

 

DKM-409 NETWORK ANALYSER 

WITH HARMONIC MEASUREMENT 

AND SCOPEMETER

 

 

Summary of Contents for DKM-409

Page 1: ... 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 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 ...

Page 2: ...WG15 cable The current transformer cable length should not exceed 1 5 meters If longer cable is used increase the cable section proportionally 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 Do not install the unit close to high electromagnetic noise emitting devices like conta...

Page 3: ...CONNECTION DIAGRAM FOR 230 400V NETWORK ...

Page 4: ...R FOR 3 SEC Clears visual warning condition if any If no warning condition enters configuration 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 ...

Page 5: ...ave new LCD contrast value and return back to CONFIGURATION MENU Select LANGUAGE on CONFIGURATION MENU Select language with MENU buttons then press SET to save the new language and return to CONFIGURATION MENU 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 se...

Page 6: ...n 1000V AC 1 minute Serial Port Signal level RS 485 Communication Modbus RTU Data Rate 9600 b no parity 1 bit stop Isolation 500V AC 1minute Serial port cable 2 wires twisted shielded cable Max 60pF meter Operating Temperature 20 C to 70 C 4 to 158 F Maximum humidity 95 non condensing Degree of Protection IP 54 Front Panel IP 30 Back panel Enclosure Non flammable ROHS compliant ABS PC UL94 V0 Inst...

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