user manual
Contents
1. ELCOMPONENT A E M 3 1 E Making sense of your energy SUPPLEMENTARY INSTRUCTIONS The AEM31 E is an ethernet enabled kWh meter based on the AEM31 DIN INSTRUMENT PROGRAMMING Please refer to the AEM31 DIN instruction sheet for information The following additional items should also be noted The instrument requires a standard RJ45 Cat 5 or equivalent cable connection to an ethernet system See the relevant documentation for MeterRing 2000 sub metering software for further information The ACT and LINK leds on the right hand side of the front panel follow standard ethernet conventions LINK is illuminated when the unit is correctly connected to an ethernet hub ACT is illuminated to indicate communication is taking place All power supply voltage connections and current CT input connections are identical to the AEM31 DIN There is no pulse output fitted to the AEM31 E INSTRUMENT PROGRAMMING Unit 5 Southmill Trading Centre Southmill Road The CT ratio set up is also identical to the AEM31 DIN However additional Bishop s Stortford Herts CM23 3DY setting up of the network and IP address is also required This is carried Tel 01279 503173 Fax 01279 654441 out via the ethernet connection after installation is complete sales elcomponent co uk 10 01 AEM31DIN INSTRUCTIONS This instrument was manufactured and tested in compliance with class 2 IEC 1010 and VDE 411 standards in accordance with group B VDE 0110 standards for ope2. the setup and reset capability can be disabled by cutting the jumper wire located under the CT input terminal cover The cover may be levered off with a small screwdriver to reveal the jumper to the right of the CT input terminals Once the jumper is cut the reset and setup is permanently disabled unless the jumper connection is remade 4 TECHNICAL CHARACTERISTICS Connection Inputs 3 phase star or single phase Voltage 250V from 20 to 800 Hz Current 5A from 20 to 800 Hz Voltage Max 264 Vrms phase to neutral Current Max 20 Arms Opto isolated volt free contact Rating 100mA 250 VAC Value 1 pulse per kWh Duration 400 500 msec Input Overload Pulse Output Number of Scales Weight 270g IP rating Instrument IP20 Front Panel IP40 Temp Range From 10 C to 40 C Relative Humidity RH Max 90 Condensation Not permitted Isolation In accordance with group B VDE 0110 standards for 250 VACrms operating voltages Dims 70w x 57 5d x 90h mm 2 current scales 1 current voltage N B Do not expose the instrument display to direct sunlight 5 WIRING DIAGRAM SELECTABLE CT RATIOS 0 N Ol 500 5 25 5 600 5 40 5 750 5 50 5 800 5 60 5 1000 5 75 5 1200 5 80 5 1250 5 100 5 1500 5 C eos ELCOMPONENT wiw elbomponent co uk Unit 5 Southmill Trading Centre Southmill Road Bishop s Stortford Herts CM23 3DY Tel 01279 503173 Fax 01279 654441 sales elcomponent co uk 10 0
3. phase rotation However the relationship between current and voltage inputs must be respected ie if red phase volts is connected to L1 the red phase CT must be connected to L1 etc 2 3 CONNECTION OF THE PULSE OUTPUT CAUTION The pulse output contacts are rated at 27VAC 20mA 27VDC 20 mA Under no circumstances should this rating be exceeded The pulse output connection is made via the two terminals marked pulse see wiring diagram The contacts are volt free and therefore an external power source must be provided Contacts are normally open and provide an output of 1 pulse per kWh Pulse duration contacts closed is 400 500 msec 3 INSTRUMENT PROGRAMMING WAIT appears when the instrument is first powered up After a few seconds the power measurement will be displayed the LED on the key is lit The programming key O is located at the bottom left corner of the front panel To enter into programming mode simultaneously press the O key and the key On the display the CT selection will appear A 5 5 Pressing the key will scroll through the available CT ratios See table When the desired selection is displayed press the programming key O to confirm and exit setup mode NOTE Unless the CT ratio is programmed the default value will be 5 5 no multiplier To reset the kWh value to zero press the O key and the key simultaneously siuk CESI TE rs a fa iie yori oe R Once programmed
4. 3
5. ply with voltage ranging from 200 240VAC 50 60 Hz using max cable gauge 2 5 mm and attached to the power supply terminals see Fig below The instrument power supply does not need an earth connection The instrument requires the installation of an external 50mA T type fuse in the power supply circuit Me uh F a oneal sane o s l Ce aT any 7 J el wast FAI JAG a 2 1 CONNECTION OF THE VOLTAGE INPUT Cables should be of 2 5mm max diameter connected as shown in the following diagrams ELCOMPONENT Making sense of your energy Mas SDG RAL Maa 250 VAC A engage MELEM Ds Panase eala SINGLE PHASE 3 PHASE STAR 2 2 CONNECTION OF THE CURRENT CT INPUT The AEM31D is suitable for use with current transformers CTs with 5A secondary output Metering quality CTs of Class 1 accuracy with a minimum rating of 2 5VA are recommended See over for the table of CT ratios which can be utilised with this instrument Connection should be made according to the following diagrams For 3 phase supplies one side of the CT secondaries S1 should be connected to the relevant input terminal Red phase to L1 Yellow to L2 and Blue to L3 The remaining CT Terminals S2 are commoned to the COM terminal which should also be earthed as shown Single phase connection is to L1 and COM only j Ed gt ee ee as NB The AEM31D is an advanced design which automatically compensates for reversed CTs and incorrect
6. rating voltages up to 250 VACrms phase to neutral It is suitable for use on 3 phase 4 wire star systems and single phase supplies To maintain this condition and to ensure safe operation the user must comply with the following instructions Ensure that the operating voltage is correct for the supply The power supply does not require an earth connection A 50 mA T Type fuse should be installed in the power supply circuit to the instrument i e phase 1 Maintenance and or repairs must be carried out only by qualified authorised personnel If there is ever the suspicion that safe use is no longer possible the instrument must be disconnected and precautions must be taken against accidental use e Operation is no longer safe when 1 there is clearly visible damage 2 the instrument no longer functions 3 after prolonged storage in unsuitable conditions 1 1 OPERATOR SAFETY Read these instructions carefully before installing and utilising the instrument The instrument described in this user manual is intended for use by properly trained staff only Maintenance and or repairs must be carried out by authorised personnel only For proper safe use of the instrument and for maintenance and or repair it is essential that the persons instructed to carry out these procedures follow normal safety precautions 1 2 SYMBOLS This symbol means Read the Instructions 2 POWER SUPPLY The instrument must have power sup
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