AEM 3X1 - Elcomponent
Contents
1. Supply 2 N Meter 2 Measurement Input Connections NETRE UER PERTE Meter 2 Measurement Input Connections Voltage Type Current Transformers J amp 1 A Supply 3 N L Meter 3 Measurement Input Connections Common Reference Voltage All loads on same phase Meter 3 Measurement Input Connections 2 CT STS i Load 3 Meters 1 3 With Common Voltage Input Meters 1 3 With Common Voltage Input Voltage Measurement Input Fuses It is recommended to fit a fuse circuit breaker to each voltage measurement input This allows the AEM 3X1 to be isolated should maintenance be required Reference Voltage ab MA the CT phase and reference voltage phase must match in all cases Common Neutral The voltage measurement inputs must be sourced from a supply with a common neutral point Suitable circuits include several feeders off a single phase circuit or individual phases of a 3 phase 4 wire supply Auxiliary Meter Supply The AEM 3X1 requires an ac supply to power the measurement circuit and display This can be any AC supply meeting the specification stated on the units rating label It is acceptable to cross connect the meter supply with one of the voltage measurement inputs providing the specified ratings are not exceeded AEM 3X1 Unit Auxiliary Supply Auxiliary Supply Fuse The auxiliary supply is not fused internally in the AEM 3X1 An external fuse must be fitted External Auxiliary Su2. fitted providing multi function meter readings to remote data acquisition systems Energy Displays Press ive to select the kWh register for each meter Active Energy Register Meter 1 Active Energy Register Meter 2 Active Energy Register Meter 3 Scaling of the energy registers is set by the nominal input currents and voltages and remains constant during operation of the meter Energy registers will each accumulate from zero to 99 999 999 then restart from zero Current amp Voltage Displays Press to select from the following displays True RMS Amps Meter 1 True RMS Amps Meter 2 True RMS Amps Meter 3 True RMS Volts Meter 1 True RMS Volts Meter 2 True RMS Volts Meter 3 kW Displays 11 Press ie to select from the following displays Active Power Meter 1 Active Power Meter 2 Active Power Meter 3 Pulse Outputs Three isolated pulse outputs are provided Pulse 1 is associated with the active energy kWh register of Meter 1 Pulse 2 with Meter 2 and Pulse 3 with Meter 3 The pulse rate amount of energy associated with each pulse and pulse length is programmable and may be set to suit the external system Pulse outputs take the form of a volt free contact closure Pulse 1 provides a momentary short circuit between contacts C and P1 for each programmed increment on meter 1 Pulse 2 provides a momentary short circuit between contacts C a
3. for the energy power displays are automatically set dependant on the CT Primary setting for the meter The length of time in seconds each momentary pulse output remains ON short circuit may be programmed A single setting is required to scale all three Meter pulse outputs The display pages are scaled as follows Setting The Pulse Output Length of Time CT Display Resolution Primary pen ga Volts Power Energy Press or to select the Next Previous Pulse On Time 0 001A 0 1V 0 001kW 0 001kWh I V When the desired Pulse Rate has been set press BAE to move to the next parameter 10 A 0 01A 0 1V 0 001kW 0 001kWh Note When selecting a long Pulse On Time it may be 0 01A 0 1V 0 01kW 0 01kWh necessary to reduce the Pulse Rate to prevent pulses sppe unineme emianenv ONe lt 100 A 0 1A 0 1V 0 01kW 0 01kWh lt 800 A 0 1A 0 1V 0 1kW 0 1kWh from the preferred list Pulse Output Test Mode This feature allows the pulse output hardware and external 0 1V 0 1kWh system connections to be commissioned without a measured The test pulse rate is set automatically dependant on the 0 1V 1kW 1kWh programmed pulse length maximum 0 5Hz i i Press to start stop the test pulses on all outputs Pulse Output Test OFF Mode In this mode no pulses occur on P1 P3 and the display shows the total number of pulses accumulated during testing Installation Mounting On A Rail The AEM 3X1 conforms to DIN 43880 6 Module Wide The unit is there
4. the operator The CTs must be fitted to the conductor with the correct orientation and must be wired to the meter with the correct polarity The devices may not carry an arrow to indicate the flow sense of the current in which case orientation should be as shown in the diagram below There are two moulding types as shown Type 1 This type has the output cable exiting from the base of the moulding Viewed from the top the marking K and T are visible as shown Ensure that the CT is positioned onto the conductor with the L marking facing towards the load Type 2 this type has the output cable exiting from the side of the moulding Ensure that the CT is positioned with the cable exit face facing towards the load The polarity of the cables does not follow convention and is as follows Type 1 ve BLACK ve BLACK WHITE Type 2 ve BLACK ve WHITE Ensure that polarity is respected when connecting to the meter Measurement Input Connections Standard CTs Measurement Input Connections Voltage Type CTs Separate reference voltages Loads on different phases Separate reference voltages Loads on different phases Current Transformer Voltage Type Current Transformers P1 P2 P1 i P2 g A L1 Y i S1 S2 Laaa I A Supply 1 Supply 1 N Meter 1 Measurement Input Connections Meter 1 Measurement Input Connections Current Transformer Voltage Type Current Transformers P1 p2 y 8 ut Load 2 Ea
5. AEM 3X1 INSTRUCTIONS Safety This instruction sheet gives details of safe installation and operation of the AEM 3X1 electricity meter Safety may be impaired if the instructions are not followed Labels on each meter give details of equipment ratings for safe operation Take time to examine all labels before commencing installation Safety symbols on the meter have specific meanings Ad Refer To User Manual AN vcs of Electric Shock WARNING The meter contains no user serviceable parts Installation and commissioning should only be carried out by qualified personnel Further information is available at www elcomponent co uk A Note The AEM 3X1 available in two versions i AEM 3X1 ii AEM 3X1V The V suffix denotes that the meter is compatible with voltage output current transformers The two types are not interchangeable Three Meters in One The AEM 3X1 consists of three multi function electricity meters in a single enclosure The unit independently monitors up to three single phase loads providing a clear digital displays of kW kWh volts and amps The circuits to be measured may be as follows i 30ff single phase loads on the same phase common reference voltage ii 3 off single phase loads on two or three different phases separate reference voltages Three pulse outputs are also available allowing each kWh register to be remotely monitored logged An RS485 Modbus RTU serial communications link is
6. fore compatible with a number of standard distribution systems with 45mm cut outs The meter should be mounted on a 35mm symmetrical Top Hat DIN rail of minimum length 106mm Pulse Output Connection The pulse outputs take the form of isolated volt free normally open contacts The pulse output circuit is isolated from all other circuits at 2 5kV 1 minute The pulses can be used as an input to a remote counter pulse logger building energy management system etc Connect to External System Pis1 Meter Pulse Contacts Pls2 Pls3 Pulse Output Connections Connecting Up AEM3xX1 This meter is designed for use with standard current transformers with 5 Amp secondaries AEM3xX1 V This meter is designed for use with voltage output CT s with 0 33V secondaries The V type meter is identified by the following labels Connection 1 Ph 2 Wire Aux Supply 230V a c 45 65 Hz 5W ee Volts Input 230 V a c CT Input 0 33Vac Ph Serial N 148682 485 Elcomponent Ltd re Positioned on the right hand side of the meter AEM 3X1 A in V V3 l 2 83 a SS amp amp BBs Curent Positioned above the bottom terminals THE METERS ARE NOT INTERCHANGEABLE AND MUST BE USED WITH THE CORRECT CT TYPE Additional Notes on Voltage output CT s These devices have a maximum output of 0 33VAC The use of any other type of CT will result in damage to the meter the CT or both and may present a danger to
7. imary Current Fine Adjust CT Primary If values other than those found in the preferred list are required use Fine Adjust Mode Hold a and Ji together for 2 Seconds to select deselect Fine Adjust Mode CTF Press y or p to increment the CT Primary current in steps of 5A Pulse Output Test RUN Mode In this mode pulses occur simultaneously on all three outputs with an Pulse On Time set in programming mode above The Pulse Rate is set automatically to be greater than twice the Pulse On Time The display shows the total number of pulses accumulated Setting The Pulse Output Rate during testing I V When the desired CT primary current has been set press to move to the next parameter The amount of energy associated with each momentary pulse output may be programmed A single setting is required to scale all three Meter pulse outputs Press 3 or p together to stop the test pulses and simultaneously reset the test counter Setting The Pulse Output Rate I V When the test is complete press EEE to move to the next parameter Press m or B to select the Next Previous Pulse Rate from the preferred list Note When selecting a long Pulse On Time it may be AY necessary to reduce the Pulse Rate to prevent pulses When the desired Pulse Rate has been set press BAE to move appearing permanently ON to the next parameter Setting The Pulse On Time Display Scaling The units kWh or MWh and the position of the decimal point
8. ister 0 1 sec default Settable between 0 1 and 20 sec lt 2 0ms N O Volt free contact Optically isolated BiFET 100mA ac dc max 100V ac dc max 0 5W Max Load 2 5kV 50Hz 1 minute MODBUS Serial Communications RS485 2 wire Ov Duplex unit load MODBUS RTU with 16 bit CRC 4800 9600 or 19 200 User settable 1 247 User settable Reply within 250ms max New command within 5ms of previous one GENERAL Temperature No of AEM 3X1 Fuse Rating Units 20 50 250V 2 5AAnti Surge _ Operating 10 C to 55 C Storage 25 C to 70 C Humidity lt 75 non condensing Environment IP20 MECHANICAL Terminals Enclosure Material Rising Cage 4mm2 12 AWG cable max DIN 43880 6 Modules Wide Noryl with fire protection to UL94 V O Self extinguishing Dimensions 106 x 90 x 58mm Cut out 106 x 45mm Weight 250 gms SAFETY Conforms to ELCOMPO a A Making sense of your energy Unit 5 Southmill Trading Centre Southmill Road Bishop s Stortford Herts CM23 3DY 01279 503173 www elcomponent co uk EN 61010 1 Installation Category III 04 08 14
9. nd P2 for each programmed increment on meter 2 Pulse 3 provides a momentary short circuit between contacts C and P3 each for each programmed increment on meter 3 Pulse LED A Light emitting diode LED on the front panel of the instrument remains ON during each output pulse of the meter showing on the display at the time Pulse Output Indicator PROGRAMMING Programming Menu To enter programming mode Hold ee and ae together for 5 Seconds A Security Code may be required before changes to programmed parameters are allowed This is only required if a Security Code greater than zero is set via serial communications This is then stored in non volatile memory during power interruptions 4 Digit Security Code To Enter the Security Code Press ase or ie to change each digit Lowest significant digit first Press ey to select next most significant digit When a valid code is entered the first page of the programming menu is displayed Programming Menu First Page Setting the CT primary current External current transformers CTs are required to reduce large currents to a level accepted as inputs to the meter The AEM 3X1 meter displays require scaling to match the primary current rating of the external Current Transformers used Each meter in the unit uses the same CT primary current rating Press F or p to select the Next Previous CT Primary current from the preferred list Setting The CT Pr
10. pply fuses should be rated ACCURACY Specification INPUTS System Voltage Un Current In Measurement Range Frequency Range Burden Overload DISPLAY Type Data Retention Format Scaling Legends AUXILIARY SUPPLY Standard Options Load Overload kWh kW Amps amp Volts PF ModbusOnly PULSE OUTPUTS Function Pulse Rate Pulse On Time Rise amp Fall Time Type Contacts Isolation Bus Type Protocol Baud Rate Address Latency Command Rate 3 Loads with a common neutral Standard 3x 230Vac Optional 3x120Vac Standard 5A from external CTs Or 0 333V from external current sensors Voltage 50 to 120 Current 0 2 to 120 Fundamental 45 to 65Hz Harmonics Up to 30th harmonic at 50Hz Voltage lt 0 1VA per meter Current lt 0 1VA per meter Voltage x2 for 1 hour Current x20 for 0 5 second max Custom Supertwist LCD 10 years min Stores kWh amp Meter set up 8 x 9mm high digits with DPs amp 2 8mm legends Direct reading User programmable CT CT Primary programmable from 5A to 25 000A kWh MWh etc depending on user settings 230V 50 60 Hz 15 115V 50 60 Hz 15 2VA Max x1 2 continuous All errors 1 digit Better than Class 1 per EN 62053 21 amp BS 8431 Better than Class 0 25 IEC 60688 Class 0 1 IEC 60688 0 01In 1 2In or 0O 1Un 1 2Un 0 2 0 05In 1 2In and 0 2Un 1 2Un 1 Pulse per unit of energy Settable between 1 amp 1000 counts of kWh reg
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