aem33 485 din instructions
Contents
1. Line Line Voltages 1 3 CURRENT DISPLAYS Press P to select the following display Phase 1 3 Current POWER DISPLAYS P Press to select from the following displays System Active Power System Power Factor C Capacitive Frequency Hz Phase 1 voltage Phase 1 3 Active Power Phase 1 3 Power Factor C Capacitive NOTE The values for phase power factor may be used to verify correct CT position amp orientation INSTRUMENT SET UP The display shows the CT set up screen The instrument settings are entered from this point starting with the CT values CT SET UP I vo To enter programming mode press and simultaneously for 5 seconds The CT primary value may then be set from the following nominal values secondary value must be 5A 5 10 15 20 30 40 50 60 80 100 150 200 250 300 400 500 600 800 1000 1200 1250 1500 1600 2000 2400 3000 2500 4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000 9500 10000 10500 11000 11500 12000 12500 13000 13500 14000 14500 15000 15500 16000 16500 1 7000 17500 18000 18500 19000 19500 2000 205000 21000 21500 22500 23000 23500 24000 24500 25000 Press the A or WV key until the desired current is displayed If the desired CT value is not present in the above list the ratio may be fine adjusted as follows Press and hold the lt and A buttons simultaneously for 2 seconds to enter Fine Adjust M2. advance the page RS485 SET UP This allows the baud rate and MODBUS address to be set Use the A and VY buttons to set the desired baud rate Press the lt key to store the value and advance the page Use the A and buttons to set the unit address Press the lt key to store the value and save and exit from the set up menu The display will show storing to confirm this action 5 TECHNICAL CHARACTERISTICS Connection 3 Phase 3 or 4 wire Unbalanced 3 Phase Balanced Single Phase Load Inputs Voltage 400 230V 3 Phase 3 4 wire Current 5A External CTs Fully isolated Burden lt 0 1VA per phase Current Voltage Pulse Output Opto isolated volt free contact Rating 100mA ac dc 100V ac dc max Value 1 pulse per kWh 1 pulse per 10 kWh 1 pulse per 100 kWh 1 pulse per 1000 kWh Duration 100ms Isolation 2 5kV for 1 minute Power Supply 230V 50 60Hz 15 Overload Voltage x 4 for 1 hour Current x 40 for 0 5 seconds max Consumption 2VA Weight 325g IP Rating Instrument IP20 Front panel IP40 Temp Range 10 65 Dims 106w x 58d x 90h mm 6 DIN ic NOTE Do not expose the instrument display to direct sunlight ELCOMPO var A Making sense of your energy Unit 5 Southmill Trading Centre Southmill Road Bishop s Stortford Herts CM23 3DY 01279 503173 sales elcomponent co uk www elcomponent co uk 29 06 09 Issue 3
3. AEM33 485 DIN ELCOMPONENT Making sense of your energy INSTRUCTIONS i SAFETY 3 CONNECTION DIAGRAMS Standard Connections This instrument is manufactured in compliance with Vn EN61010 1 Cat III for nominal operating voltages of 400V too 0 L L and 230V L N to ensure safe operation the user must i Ee 9 comply with the following instructions L2 MM O e Ensure that the supply voltage is correct r Pf oag j e The auxiliary mains supply is internally fused at 250V s1 s2 100mA Type 2 External fusing is required if the 7 auxiliary supply voltage exceeds 250V e Maintenance and or repairs must be carried out only by qualified authorised personnel l OPT e If there is ever the suspicion that safe use is no longer E lf fid possible the instrument must be disconnected and L N Vn V1 V2 V3 M 11 Dt I 3 13 precautions must be taken against accidental use 3 Phase 3 or 4 Wire Optional Neutral e Operation is no longer safe 1 lf there is clearly visible damage P12 2 Ifthe instrument no longer functions a e E 3 After prolonged storage in unsuitable conditions L2 s p E oe i Read these instructions carefully before installing and OPT utilising the instrument a E re gg The instrument described in this user manual is intended L N Vn Vi V2 V3 M H Id 3 13 for use by properly trained staff only Maintenance and or l repairs must be carried out by authorised personnel only er For pr
4. e provided Pulse Output Pulse Output 1 PULSE OUTPUT CONNECTIONS 3 3 RS485 CONNECTIONS The RS485 output consists of 3 terminals 15 16 amp 17 at the top left of the unit These should be connected via the correct specification cable to the data bus Refer to Elcomponent for cable recommendations Terminal connections are as follows 15 A 16 B 17 0 V A amp B are signal cables lt A B J 15 16 17 I NOTE It is essential that the polarity is respected when other units are connected to the bus 4 INSTRUMENT OPERATION amp SET UP When the instrument is powered up the display will initially show the internal software version then after a few seconds will start displaying measured values The four buttons allow the user to scroll through the available measurements ENERGY DISPLAYS Press H to select kWh kVArh and Hours Run display pages Active Energy Register Reactive Energy Register Hours Run The Hours Run register accumulates the total time during which the average 3 phase load current exceeds a preset level This is always displayed with a resolution 0 1 hour The percentage level of 11 12 13 at which the Hours Run register accumulates is user programmable from 1 to 100 of full scale current a ns Press and together and hold for 2 seconds to reset the hours run register VOLTAGE DISPLAYS ha Press to select from the following displays Phase n Voltages 1 3
5. ode This is indicated by a decimal point displayed immediately to the right of the defined parameter viz Ct this enables the CT primary value to be changed in 10A steps until the desired ratio is displayed Press the lt key to store the value and advance the page VT SET UP The default voltage setting is 400V and this value should not be altered PULSE SET UP The pulse rate value PLr may be set between 0 1 and 100 pulses per unit Press the A or V key until the desired pulse is displayed Note that the unit of energy Wh kKWh MWh will automatically change to reflect the primary values of CT amp VT previously set The pulse value is set for both outputs during the process Press the lt key to store the value and advance the page The pulse duration value PLt may be set in increments between 100mS amp 20 seconds as required The Pulse Output Test Pto allows the meter pulse output and connected data collection hardware to be tested regardless of whether an actual load is present Press the A button to start the test The display will show Ptr and both outputs will pulse simultaneously This is verified by the front panel e d s Press the A and together to stop the test and reset the test counter HOURS RUN SET UP The hours run preset level may be set between 1 and 100 of the full scale current Press the A or WV key until the desired value is displayed Press the lt key to store the value and
6. oper safe use of the instrument and for maintenance and or repair it is essential that the persons m 5 instructed to carry out these procedures follow normal Si safety precautions kK L1 2 SYMBOLS OPT HG Bi Vn V1 V2 V3 i 1 12 12 13 I3 Single Phase A caution Failure to follow the instructions may result in personal injury or damage to equipment NOTE Failure to follow the instructions may result A a in an instrument malfunction CAUTION The instrument is internally fused at 250V 100mA External fusing is required if the supply voltage exceeds 250V 3 1 CONNECTION OF THE CURRENT INPUT The AEM33 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 Connections should be made according to the diagrams above 3 2 PULSE OUTPUT CONNECTIONS caution The pulse output contacts are rated at 100mA AC DC 100V max Under no circumstances should this rating be exceeded The AEMS83 is fitted with dual pulse outputs Output 1 provides a pulse proportional to kWh output 2 provides a pulse proportional to kVArh Each output has a telltale l e d on the front panel which flashes on to indicate a pulse being generated The pulse connections are as follows Pulse 1 Terminals 31 amp 32 Pulse 2 Terminals 29 amp 30 The contacts are volt free and therefore an external power supply must b
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