LEM DK series User manual

DK SERIES
DC Current Transducers
Ranges from 5 to 400 A
With 0-20 mA, 4-20 mA,
0-5 VDC or 0-10 VDC Outputs
Installation guide
Manuel d’utilisation
Einbauvorschiften
Description
DK Series transducers combine a Hall Effect sensor and a signal
conditioner into a single package. This provides higher accuracy,
lower wiring costs, easier installation and saves valuable panel
space. This product is available either in solid core or in split core
package.
Important before to start
In order to guarantee safe operation of the transducer and to
be able to make proper use of all the features and functions,
please read the following instructions thoroughly.
Ensure you get up-to-date technical information that can be found
in the latest associated datasheet under www.lem.com.
DK Series Inst. Rev 8.0 P/N 292000105
Beschreibung
Die DK-Baureihe ist eine Kombination von Hall-Effekt-
Stromwandler und Signalaufbereitung in einem Gehäuse.
Dadurch werden eine höhere Genauigkeit, niedrigere
Verdrahtungskosten sowie eine einfachere Installation
erreicht und wertvoller Platz im Schaltschrank eigespart. Die
Messumformer dieser Baureihe sind als Klappwandler oder in
geschlossener Bauform erhältlich.
Fehlersuche
1. Ausgangssignal zu niedrig
- Der Jumper ist auf einen Messbereich gesetzt, der für den
strom, der überwacht wird, zu hoch ist. Setzen sie den
Jumper auf den richtigen Messbereich.
- die Stromversorgung ist nicht richtig dimensioniert.
Überprüfen Sie Nennspannung und Nennstrom der
Stromversorgung. Stellen sie sicher, dass die
Nennspannung unter Volllast eigehalten wird.die
DK-Baureihe benötigt 2.0 VA.
Fehlersuche 0-20, 4-20 mA Typen
- Lastwiderstand ist zu hoch. Überprüfen Sie den
Lastwiderstand, stellen Sie sicher, dass er nicht mehr als
500 Wbeträgt.
Fehlersuche 0-5 VDC & 0-10 VDC Typen
- Lastwiderstand ist zu niedrig. Überprüfen Sie den
Lastwiderstand, stellen Sie sicher, dass er mindestens
25 kWbeträgt.
2. Sensor gibt immer den Maximalwert aus
- Der Jumper ist auf einen Messbereich gesetzt, der für den
Strom, der überwacht wird, zu niedrig ist. Versetzten Sie
den Jumper auf den richtigen Messbereich.
3. Sensor liefert kein Ausgangssignal
- Anschlüsse der Spannungsversorgung vertauscht. Polarität
der Anschlüsse richtig stellen.
- Überwachte Last ist kein Gleichstromverbraucher oder ist
nicht eingeschaltet. Stellen Sie sicher, dass es sich um
einen Gleichstromverbraucher handelt und er eingeschaltet
ist.
 -Umbauwandler:DieEndächenderKernteilekönnten
verschmutzt sein. Öffnen Sie den Sensor und reinigen Sie
  dieEndächen.
Description
Les capteurs de la série DK intègrent un capteur à effet
Hall et un conditionneur de signal dans un seul boîtier.
Ceci permet une plus grande précision, un coût de
connexion moins élevé et une installation mécanique facile.
Ce produit est disponible en boîtiers ouvrants et monoblocs.
Problèmes
1. Signal de sortie trop faible
- Le calibre peut être mis dans une gamme qui est trop forte
pour le courant surveillé. Déplacer le calibre dans une
gamme adaptée.
 - L’alimentationn’estpasadaptée.Vérierl’alimentation
  enétantcertainquelatensionestsufsantepourune
charge maximum. La consommation des DK s’approche
des 2.0 VA.
Modèles à sortie 0-20 mA, 4-20 mA
- L’impédance de sortie est trop élevée.
  Vérierquelarésistancedesortieestinférieureà500W.
Modèles à sortie 0-5, 0-10 VDC
- L’impédance de sortie est trop basse.
  Vérierquelachargedesortiesoitsupérieureà25kW.
2. Signal de sortie est toujours au maximum
- Le calibre est mis dans une gamme trop inférieure au
courant mesuré. Déplacer le calibre dans une gamme
adéquate.
3. Absence du signal de sortie
 - Lapolaritén’estpascorrecte.Vérieretcorrigerla
connexion du secondaire.
- Le courant primaire est inexistant ou il n’est pas continu.
  Vérierlefonctionnementdusystèmeet/ouletypedu
courant primaire.
- Pour les modèles à tores ouvrants : La surface de contact
n’est pas propre. Ouvrir le capteur et nettoyer la surface
de contact.

Installation
1. Run wire to be monitored through sensor aperture. Be sure
 themonitoredcurrentowisinaccordancewithany
directional arrows on sensor.
2. Mount the transducer to a surface if needed. They can be
mounted in any position or hung directly on wires with a wire
tie. Just leave at least 30 mm distance between sensor and
other magnetic devices.
3. Connect output wiring to deadfront captive screw terminals
and observe polarity. Use up to 2.5 mm2(14 AWG) copper
wires. Tighten terminals to 0.6 Nm (5 in-lbs) torque.
- for current output models (mA), make sure output load is
no more than 500 W.
- for voltage output models (VDC), make sure output load is
at least 25 kW.
4. Connect the appropriate power supply. For optimal perfor-
mance, ensure unit has been ernergized for a period of 20
minutes prior to sensing operation.
5. Select the range that is equal to or slightly higher than the
normal operating amperage of monitored circuit. Place the
range jumper in the appropriate position.
Trouble shooting
1. Output Signal Too Low
- The jumper may be set in a range that is too high for current
being monitored. Move jumper to the correct range.
- Power supply is inadequate. Check power supply. Make
  sureitisofsufcientvoltagewithallloadsatmaximum.
DK series consumes 2.0 VA.
For 0-20 mA, 4-20 mA Models
- Output load too high. Check output load, be sure it is no
more than 500 W.
For 0-5, 0-10 VDC Models
- Output load too low. Check output load, be sure it is at
least 25 kW.
2. Output Signal is always at maximum
- The jumper may be set in a range that is too low for current
being monitored. Move jumper to the correct range.
3. Sensor has not output
- Polarity is not properly matched. Check and correct wiring
polarity.
- Monitored load is not DC or is not on. Check that the
monitored load is DC and that it is actually on.
- Split Core models: The core contact area may be dirty.
Open the sensor and clean the contact area.
16September2013/Version 8
Safety and warning notes
Safe operation can only be guaranteed if the transducer is used
for the purpose it has been designed for and within the limits of
thetechnicalspecications.
Caution! Risk of danger
Ignoring the warnings can lead to serious injury and/or cause
damage!
The electric measuring transducer may only be installed and
putintooperationbyqualiedpersonnelthathavereceivedan
appropriate training.
The corresponding national regulations shall be observed during
installation and operation of the transducer and any electrical
conductor.
The transducer shall be used in electric/electronic equipment
with respect to applicable standards and safety requirements
and in accordance with all the related systems and components
manufacturers’ operating instructions.
Caution! Risk of electrical shock
When operating the transducer, certain parts of the module may
carry hazardous live voltage (e.g. primary conductor, power
supply).
The user shall ensure to take all measures necessary to protect
against electrical shock.
The transducer is a built-in device containing conducting parts
that shall not be accessible after installation.
A protective enclosure or additional insulation barrier may be
necessary.
The transducer shall not be put into operation if the jaw opening is
open (split core version) or the installation is not completed.
Installation and maintenance shall be done with the main power
supply disconnected except if there are no hazardous live parts in
or in close proximity to the system and if the applicable national
regulations are fully observed.
At the heart of power electronics
LEM is the market leader in providing innovative and high quality
solutions for measuring electrical parameters. Its core products
current and voltage transducers are used in a broad range
of applications in industrial, traction, energy, automation and
automotive markets.
For more information: www.lem.com
LEM S.A.
8, chemin des Aulx
CH-1228 Plan-les-Ouates
Switzerland
Connection diagram
DK Split core version DK Solid core version
Output polarity and primary current direction
For correct transducer mounting, please refer to the appropriate
datasheet for the respective positive current direction and transfer
characteristics of the:
- standard unipolar output version (magnitude only)
- unidirectional version (“U” option)
- bi-directional version (“B” option).
Split-core model
Press the tab in the direction as
shown to open the sensor.
After placing the wire in the
opening, press the hinged portion
rmlydownwarduntiladenite
click is heard and the tab pops
out fully.
Silicone grease is factory applied on the mating surfaces to
prevent rust and improve performance.
Be careful not to allow grit or dirst onto the grease in the contact
area. Operation can be impaired if the mating surfaces do not
have good contact. Check visually before closing.
Isolation characteristics
UbRated insulation voltage rms,
reinforced insulation, CAT III, PD2 150 V
If isolated cable is used for the primary circuit, the
voltage category could be improved according to
the following table:
Cable isolation (primary) Category
HAR 03 300 V CAT III
HAR 05 600 V CAT III
HAR 07 1000 V CAT III
UdRms voltage for AC insulation test,
50Hz, 1 min 3 kV
ULXX Plasticcaseclassication UL94-V0
1(-) 2(+) 3(-) 4(+)
Power Output
Range
Jumper High
(-) (+)
Power Supply
20-45 VDC
(+)
Load
(Controller,
Meter, Etc).
(-)
Range
Jumper Measuring
None Low
Mid Medium
High High
Mid
:
1(-) 2(+) 3(-) 4(+)
Power Output Range
Jumper
High
(-) (+)
Power Supply
20-45 VDC
(+)
Load
(Controller,
Meter, Etc).
(-)
MidLow