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Eastron SDM530-MT Manual
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Eastron SDM530-MT Manual

Three phase multi-function din rail meter
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Eastron SDM530-MT User Manual
SDM530-MT
Three Phase Multi-function DIN rail meter
Measures kWh Kvarh, KW, Kvar, KVA, P,
F, PF, Hz, dmd, V, A, etc.
Bi-directional measurement IMP & EXP
Two pulse outputs
RS485 Modbus
Din rail mounting 35mm
100A direct connection
4 tariffs,10 time segments
Better than Class 1 / B accuracy
- 1 -
USER MANUAL
2015 V1.5

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Summary of Contents for Eastron SDM530-MT

  • Page 1 Eastron SDM530-MT User Manual SDM530-MT Three Phase Multi-function DIN rail meter  Measures kWh Kvarh, KW, Kvar, KVA, P, F, PF, Hz, dmd, V, A, etc.  Bi-directional measurement IMP & EXP  Two pulse outputs  RS485 Modbus ...
  • Page 2 Eastron SDM530-MT User Manual Introduction The SDM530-MT measures and displays the characteristics of three phase four wires (3p4w) supplies, including voltage, frequency, current, power, active and reactive energy, imported or exported. Energy is measured in terms of kWh, kVArh. Maximum demand current can be measured over preset periods of up to 60 minutes.
  • Page 3 Eastron SDM530-MT User Manual Start-up Screens The first screen lights up all display segments and can be used as a display check second screen indicates firmware installed in the unit and its build number. The interface performs a self-test and indicates the result if the test passes.
  • Page 4 Eastron SDM530-MT User Manual Voltage and Current and Max Demand Each successive pressing of the button selects a new range: Phase to neutral voltages Phase to neutral voltages Current on each phase Neutral current Maximum Current Demand - 4 -...
  • Page 5 Eastron SDM530-MT User Manual Power and Frequency and Power factor Each successive pressing of the button selects a new range: Instantaneous Active Power in kW When it’s exported, there will be a mark of minus “－”. Instantaneous Reactive Power in kVAr When it’s exported, there will be a mark...
  • Page 6 Eastron SDM530-MT User Manual Power Factor of each phase Maximum Power Demand Energy Measurements Each successive short pressing (lasting less than 3s) of the button selects a new range: Total active energy in kWh Total kWh=imported +exported (kWh) Total Imported active energy in kWh...
  • Page 7 Eastron SDM530-MT User Manual Tariff 1 Active energy Tariff 2 Active energy Tariff 3 Active energy Tariff 4 Active energy Total reactive energy in kVArh Total kVArh=imported +exported (kVArh) Imported reactive energy in kVArh - 7 -...
  • Page 8 Eastron SDM530-MT User Manual Exported reactive energy in kVArh Tariff 1 Reactive energy Tariff 2 Reactive energy Tariff 3 Reactive energy Tariff 4 Reactive energy Date Example:1st,Jan,2000 - 8 -...
  • Page 9 Eastron SDM530-MT User Manual Time Hour: minute: second 00:02:16 Set-up To enter set-up mode, long pressing the button for 2 seconds, until the password screen appears. Setting up is password-protected so you must enter the correct password (default ‘1000’) before processing.
  • Page 10 Eastron SDM530-MT User Manual 5) Having completed a parameter setting, press to return to a higher menu level. The SET indicator will be removed and you will be able to use the buttons for further menu selection. 6) On completion of all set-up, press repeatedly until the measurement screen is restored.
  • Page 11 Eastron SDM530-MT User Manual to set the first digit and press confirm your selection. The next digit will flash. Repeat the procedure for the remaining three digits After setting the last digit, SET will show. Press to exit the number setting routine and return to the Set-up menu. SET will...
  • Page 12 Eastron SDM530-MT User Manual buttons to select the time required. Press confirm selection. SET indicator will appear. Press to exit the DIT selection routine and return to the menu. Backlit set-up The backlit lasting time is settable Default lasting time is 60minutes For example, if it’s setted as 5,the...
  • Page 13 Eastron SDM530-MT User Manual From the Set-up menu, use buttons to select the Pulse output option. Press to enter the selection routine. The unit symbol will flash. buttons to choose kWh or kVArh. Default is kwh On completion of the entry procedure, press to confirm the setting and press to return to the main set up menu.
  • Page 14 Eastron SDM530-MT User Manual Press to enter the selection routine. The current setting will flash. Default is DFt (2.5kWh/kVArh). buttons to choose pulse rate. On completion of the entry procedure, press to confirm the setting and press to return to the main set up menu.
  • Page 15 Eastron SDM530-MT User Manual Scroll display From the Set-up menu, use buttons to select the Scroll display option. Press to enter the selection routine. The current setting will flash. The options can be:1 to255 Seconds Default is 255s buttons to choose interval of scroll display. On completion of...
  • Page 16 Eastron SDM530-MT User Manual Press button to enter the selection routine. The current setting will be flashing. buttons to choose Modbus Address(001 to 247) Default is 001 On completion of the entry procedure, press button to confirm the setting and press button to return the main set-up menu.
  • Page 17 Eastron SDM530-MT User Manual On completion of the entry procedure, press to confirm the setting and press to return to the main set up menu. Parity From the Set-up menu, use buttons to select the Parity option. Press to enter the selection routine.
  • Page 18 Eastron SDM530-MT User Manual Press to enter the selection routine. The current setting will flash. buttons to choose Stop Bit (2 or 1) Default is 1. On completion of the entry procedure, press to confirm the setting and press to return to the main set up menu.
  • Page 19 Eastron SDM530-MT User Manual Specifications Measured Parameters The unit can monitor and display the following parameters of four phase four wires(3p4w) supply. Voltage and Current Phase to neutral voltages 176 to 274V a.c. Power factor and Frequency and Max. Demand...
  • Page 20 Eastron SDM530-MT User Manual The unit provides two pulse outputs. Both pulse outputs are passive type. Pulse output 1 is configurable. The pulse output can be set to generate pulses to represent total / import/export kWh or kVarh. The pulse constant can be set to generate 1 pulse per: DFt=2.5 Wh/VArh...
  • Page 21 Eastron SDM530-MT User Manual Wiring diagram - 21 -...
  • Page 22 If an error occurs in receipt of the message, SDM530-MT will make no response. If the SDM530-MT is unable to perform the requested action, it will construct an error message and send it as the response.
  • Page 23 SCADA systems, SDM530-MT Smart meter will response to any single input or holding register read with an instrument type specific value. The SDM530-MT can transfer a maximum of 40 values in a single transaction; therefore the maximum number of registers requestable is 80. Exceeding this limit prompts the SDM530-MT to generate an exception response.
  • Page 24 www.stromzähler.eu 30025 √ Phase 1 volt amps reactive. 30027 √ Phase 2 volt amps reactive. 30029 Phase 3 volt amps reactive. √ 30031 √ Phase 1 power factor (1). None 30033 √ Phase 2 power factor (1). None 30035 √ Phase 3 power factor (1).
  • Page 25 www.stromzähler.eu 30345 √ Total kvarh kvarh 30514 √ Total Current month Energy (Total、Rate1、Rate2、Rate3、Rate4 30530 √ Total Last 1 month Energy (Total、Rate1、Rate2、Rate3、Rate4) 30546 √ Total Last 2 month Energy (Total、Rate1、Rate2、Rate3、Rate4) 30562 √ TotalLast3monthEnergy ( Total、Rate1、Rate2、Rate3、Rate4) 30578 Total Last 4 month Energy √...
  • Page 26 www.stromzähler.eu 361714 √ Last 1 month positive Energy (Total、Rate1、 Rate2、Rate3、Rate4 361730 √ Last 2 month positive Energy (Total、Rate1、 Rate2、Rate3、Rate4 361746 Last 3 month positive Energy (Total、Rate1、 √ Rate2、Rate3、Rate4 361762 √ Last 4 month positive Energy (Total、Rate1、 Rate2、Rate3、Rate4 361778 √ Last 5 month positive Energy (Total、Rate1、 Rate2、Rate3、Rate4 361794 √...
  • Page 27 www.stromzähler.eu 362114 √ Last 10 month reverse Energy (Total、Rate1、 Rate2、Rate3、Rate4) 362130 √ Last 11 month reverse Energy (Total、Rate1、 Rate2、Rate3、Rate4) 362146 Last 12 month reverse Energy (Total、Rate1、 √ Rate2、Rate3、Rate4) 362226 √ Last 1 month positive max Demand (Total、 Rate1、Rate2、Rate3、Rate4) 362242 √ Last 2 month positive max Demand (Total、...
  • Page 28 www.stromzähler.eu 362594 √ Last 8 month reverse max Demand (Total、 Rate1、Rate2、Rate3、Rate4) 362610 √ Last 9 month reverse max Demand (Total 、 Rate1、Rate2、Rate3、Rate4) 362626 Last 10 month reverse max Demand (Total、 √ Rate1、Rate2、Rate3、Rate4) 362642 √ Last 11 month reverse max Demand (Total、 Rate1、Rate2、Rate3、Rate4) 362658 √...
  • Page 29 4X registers. Modbus Protocol Function Code 03 is used to read the parameter and Function Code 16 is used to write. Write to only one parameter per message. 1.3.1 SDM530-MT MODBUS Protocol Holding Register Parameters Modbus Protocol...
  • Page 30 www.stromzähler.eu Read password lock status: 0 = locked. 1 = unlocked. Reading will also reset the password timeout back to one minute. Write the network port parity/stop bits for MODBUS Protocol, where: 0 = One stop bit Network Parity 40019 and no parity, default.
  • Page 31 Data Format:BCD 2 RS485 General Information Some of the information in this section relates to other Eastron Digital meter product families, and is included to assist where a mixed network is implemented.RS485 or EIA (Electronic Industries Association) RS485 is a balanced line, half-duplex transmission system allowing transmission distances of up to 1.2 km.
  • Page 32 2.3 A and B terminals The A and B connections to the Eastron Digital meter products can be identified by the signals present on them whilst there is activity on the RS485 bus:...
  • Page 33 2.4 Troubleshooting · Start with a simple network, one master and one slave. With Eastron Digital meter products this is easily achieved as the network can be left intact whilst individual instruments are disconnected by removing the RS485 connection from the rear of the instrument.
  • Page 34 The MODBUS Protocol functions used by the Eastron Digital meters copy 16 bit register values between master and slaves. However, the data used by the Eastron Digital meter is in 32 bit IEEE 754 floating point format.
  • Page 35 www.stromzähler.eu even number. Error Check (Lo): The bottom (least significant) eight bits of a 16-bit number representing the error check value. Error Check (Hi): The top (most significant) eight bits of a 16-bit number representing the error check value. Response The example illustrates the normal response to a request for a single floating point parameter i.e.
  • Page 36 3.2 Serial Transmission Modes There are two MODBUS Protocol serial transmission modes, ASCII and RTU. Eastron Digital meters do not support the ASCII mode. In RTU (Remote Terminal Unit) mode, each 8-bit byte is used in the full binary range and is not limited to ASCII characters as in ASCII Mode.
  • Page 37 A new message can begin after this interval. In the Eastron 1000 and 2000, a silent interval of 60msec minimum is required in order to guarantee successful reception of the next request. The entire message must be transmitted as a continuous stream. If a silent interval of more than 1.5 character times occurs before completion of the message, the receiving device...
  • Page 38 www.stromzähler.eu 3.5 Error Checking Methods Standard MODBUS Protocol serial networks use two error checking processes, the error check bytes mentioned above check message integrity whilst Parity checking (even or odd) can be applied to each byte in the message. 3.5.1 Parity Checking If parity checking is enabled –...
  • Page 39 Eastron Digital meters use two consecutive registers to represent a floating-point number, effectively expanding the range to +/- 1x10 The values produced by Eastron Digital meters can be used directly without any requirement to “scale” the values, for example, the units for the voltage parameters are volts, the units for...
  • Page 40 www.stromzähler.eu the power parameters are watts etc. What is a floating point Number? A floating-point number is a number with two parts, a mantissa and an exponent and is written in the form 1.234 x 10 . The mantissa (1.234 in this example) must have the decimal point moved to the right with the number of places determined by the exponent (5 places in this example) i.e.
  • Page 41 Adding these two numbers together and making reference to the sign bit produces the number +240.5. For each floating point value requested two MODBUS Protocol registers (four bytes) must be requested. The received order and significance of these four bytes for Eastron Digital meters is shown below: Data Hi Reg,...
  • Page 42 www.stromzähler.eu Field Name Example(Hex) Slave Address Function Starting Address High Starting Address Low Number of Points High Number of Points Low Error Check Low Error Check High Note: Data must be requested in register pairs i.e. the “Starting Address“ and the “Number of Points”...
  • Page 43 www.stromzähler.eu Points” must be even numbers to request a floating point variable. If the “Starting Address” or the “Number of points” is odd then the query will fall in the middle of a floating point variable the product will return an error message. The following response returns the contents of Demand Time as 1, But see also “Exception Response”...
  • Page 44 10 OR 80 = 90 Exception Code Error Check Low Error Check High 3.11 Exception Codes 3.11.1 Table of Exception Codes Eastron Digital meters support the following function codes: Exception MODBUS Description Code Protocol name The function code is not supported by the...
  • Page 45 Query Data” sub-function (sub-function 0) is supported on Eastron Digital meters. Example The following query will send a diagnostic “return query data” query with the data elements set to Hex(AA) and Hex(55) and will expect these to be returned in the response:...