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DZG Metering WS74, Product Manual

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Product Manual WS74 
__________________________________________________________________________________ 

Copyright 

 DZG Metering GmbH,  Heidelberger Str. 32, D-16515 Oranienburg 

  Copies only are allowed authorized  by DZG

 

 

2/22/2019 

 

Page 37 / 37 

15

 

Accuracy test 

The accuracy of the meter is done with the pulse LEDs. For testing the following quantity of minimum 
pulses dependent from the load are recommended: 

 

Load 

pulses 

I

st

 - I

tr

 

1 

I

ref

 

4 

I

max

 

14 

 

 

 

 

 

Table 13 Quantity of pulses 

16

 

Manufacturing 

The final assembling is done by DZG Oranienburg GmbH. The meters are evaluated for conformity 
according to the specifications of the Module D procedure. 
DZG Oranienburg GmbH has a certified quality management system in accordance with DIN EN ISO 
9001 and is the responsible body for the state-approved testing laboratory for electricity meters EBB1. 
The processes, controls and documentations are organized according to the quality standard. 

Summary of Contents for WS74

Page 1: ...tatic Electricity Meter WH4013 Single Phase Electronic Electricity Meter WS74 Date 05 09 2017 Last changes 22 02 2019 DZG Metering GmbH Heidelberger Str 32 D 16515 Oranienburg Feb 19 WS74 Product Manual ...

Page 2: ...nts of this user manual are copyright reserved Translations prints and copies are only allowed authorized by DZG All mentioned brand names and product names are ownership of DZG Metering GmbH Contents may be completed changed or deleted without prior announcements The descriptions of this user manual are not integral part of contracts DZG Metering GmbH All rights reserved DZG Metering GmbH Heidelb...

Page 3: ...anger through Electric Voltages The symbol indicates warnings which may lead to personal injuries or death if it is ignored Take all necessary precautions to avoid danger Warning The symbol indicates warnings to a possible dangerous situation which may lead to personal injuries or damage to properties Avoid dangerous situations Attention Attention indicates warnings which may lead to damage of pro...

Page 4: ...n 11 4 1 Housing 11 4 2 Installation 13 4 3 Protection housing 14 5 Nameplates 14 6 LCD Display 15 7 Test LED 16 8 Optical interface 16 9 PlugIn interface 17 10 Behavior of external interfaces 17 11 Block diagram 18 11 1 The whole block diagram 18 11 2 Measurement part 18 12 Functionality 19 12 1 Measurement 19 12 2 Measurement modes 19 12 3 Firmware architecture 20 12 4 Energy checksum mechanism ...

Page 5: ... 13 Table 6 Nameplate elements 14 Table 7 Display elements 15 Table 8 Tariff control modes 24 Table 9 Instantaneous data 32 Table 10 Energy registers 33 Table 11 Basic parameter 33 Table 12 Status word 36 Table 13 Quantity of pulses 37 Pictures Figure 1 Housing 11 Figure 2 Housing dimensions 12 Figure 3 Terminal block 12 Figure 4 Connecting diagram with tariff control 13 Figure 5 Seals protection ...

Page 6: ... VDE FIFO First IN First OUT HH or hh Hour IEC International Electrotechnical Commission Imp kWh quantity of pulses each kWh IR Infrared LCD Liquid Crystal Display LED Light Emitting Diode MM or mm Month or Minutes OBIS Object Identification System P Import active power P Export active power PTB Physikalisch Technische Bundesanstalt Q Import reactive Power Q Export reactive Power RTC Real Time Clo...

Page 7: ...ation purposes only and may not be used for billing purposes Values not displayed in the LCD must not be used for billing purposes 1 3 Properties Type Two phase electricity meter direct connection Voltage Nominal voltage Un 230VAC Voltage range 0 8 1 15 Un Frequency Nominal frequency fn 50 Hz Frequency range 0 98 1 02 fn Current Reference current Iref Ib 10 Itr 5 A 10A Maximum current Imax 40A 60A...

Page 8: ...eight approx 0 64kg Table 1 Technical properties 1 3 1 Technical standards EN 50470 3 2006 Electricity metering equipment a c Part 3 Particular requirement Static meters for active energy class indexes A B and C EN 50470 1 2006 Electricity metering equipment a c General requirements tests and test conditions metering equipment class indexes A B and C 1 PTB Requirements 1 1 Anforderungen an elektro...

Page 9: ...he warranty and liability will be terminated with opening the device The same applies to damages caused by external influences For the device no servicing is required 2 4 Disposal product end of life information This meter was designed and built by DZG to provide many years of service and is backed by our commitment to provide high quality support When it eventually reaches the end of its servicea...

Page 10: ...________________________________________________________________________ Copyright DZG Metering GmbH Heidelberger Str 32 D 16515 Oranienburg Copies only are allowed authorized by DZG 2 22 2019 Page 10 37 3 Typecode Table 2 Typecode ...

Page 11: ...thorized by DZG 2 22 2019 Page 11 37 4 Assembling and installation 4 1 Housing The mounting size is conforming to DIN 43857 Figure 1 Housing Nr Element 1 Meter Hook 2 LCD 3 User Button 4 Optical Button 5 Data Interface INFO interface 6 Sealable screws to fix meter covert o the meter base 7 Sealable screws to fix the terminal cover 8 Terminal cover Table 3 Housing components 1 6 2 3 4 6 7 8 6 6 5 ...

Page 12: ...nal block Nr Materials 1 Meter cover Material PC plastic 10 GF spec ML7694 GY8E536SHK Anti ultraviolet radiation 2 Meter base Material PC plastic 10 GF spec ML7694 GY8E536SHK The mounting size conforms to DIN 43857 3 Terminal block Material PBT 15 GF spec 1202G3 201 The size conforms to DIN 43857 Limited Temperature arrange 170 4 Terminal cover Material PC plastic 10 GF spec ML7694 GY8E536SHK Two ...

Page 13: ... N 4 6 Auxiliary terminal N 5 3 2 M3 M 2 Nm Auxiliary terminal L 2 2 7 M3 Steel 0 5 0 6 Nm Tariff control L 13 2 7 M3 Steel 0 5 0 6 Nm Tariff control N 15 Interface LMN PlugIn sealable 2 4pin connector Table 5 Terminal block Notice The terminal 13 and 15 are assembled only for the type with 2 tariff Warning The requirements of the net provider needs to be fulfilled Selective hedges has to be used ...

Page 14: ...ules will be protected against unauthorized opening with seals Figure 5 Seals protection housing 5 Nameplates Figure 6 Nameplate Pos Item Remark Explanation 1 Meter type WS7412 1 Type code of meter 2 2 D Barcode 3 serial number 4 technical nominal data 5 certification CE sign year of certification named body for MID approval 6 buttons User button optical button 7 Connection diagram 8 Test LED infr...

Page 15: ... 0 6 6 digit with one decimal without leading 0 right aligned 7 unit kWh W Wh V A 8 L1 Display voltage on 80 Un off 60 Un 9 A A Display current energy direction on load detected off no load 10 Display current energy direction Import Export on load detected off no load 11 Current power indication The bar is moving dependent from the power from the left to the right side In case of no load the bars ...

Page 16: ...EN 62056 21 9600 Bd 8 N 1 Time distance between 2 Bytes 2ms Telegrams according IEC62056 21 2002 Server Id according DIN 43863 5 The interface must operate at least 2s after the meter is operating after power on Periodical output of data list every 1s Short data list without P Extended data list with P Measuring mode value A with reverse locking A A A with reverse locking A Manufacturer ID x x x x...

Page 17: ... Tx Inside the meter a DC DC converter can be assembled for power supply the PlugIn Modules A meter with an assembled DC DC converter is marked with an H in the type code WS74xx xH Figure 8 Terminal block DVS74 At the moment two types of PlugIn modules are available a LMN PlugIn The LMN PlugIn enables it to connect the meter to a Smart Meter Gateway SMGW as defined in the FNN specifications The LM...

Page 18: ...tical button input the display information can be switched 11 2 Measurement part The meter is able to measure active energy in accuracy class 1 Class B using measurement unit embedded in the SOC The basic operation is that the device multiplies the instantaneous voltage and current together to give the instantaneous power consumption at the high precision It then integrates these power units a pre...

Page 19: ...it to the pulse output through LED 12 Functionality 12 1 Measurement Dependent from the type of the meter it measures and counts the following active energy with accuracy class B active energy import A and active energy export A active energy import A tariff T1 active energy import A tariff T2 active energy export A tariff T1 active energy export A tariff T2 The internal resolution of the energy r...

Page 20: ... 2019 Page 20 37 12 3 Firmware architecture The Basic structure of the firmware AL Application Layer DAL Driver Application Layer HD Hardware Driver DML Data Manage Layer AL Application Layer DAL Driver Application Layer HD Hardware Driver DML Data Manage Layer Write data Write data DML polling and Read data Read data AL Write Data Message post AL AL Read data AL Write Data AL Read data Figure 10 ...

Page 21: ...ed to the energy registers in the RAM or EEPROM the energy registers are red out and the checksum is controlled If the check sum is not correct the backup registers are used The current E is accumulated to the energy register and the check sum is calculated new These information are stored to the memories Finally a new back up of the energy registers and the checksum is created Note The firmware v...

Page 22: ... a checksum Firmware will validate the data by check sum If there is error the backup data will be recovered for use Measures against unintended or intended reset of the energy registers Firmware does not provide the interface to reset the energy registers If there was situation which lead to current energy registers reset the firmware will recognize it by check sum validation then the backup data...

Page 23: ...2 8 1 2 8 2 simultaneously The LMN command has higher priority as the terminal inputs If the tariff function is disabled o the energy counting is done in x 8 0 and x 8 1 o in the display only register x 8 0 are used o on the INFO interface only x 8 0 values are pushed If the tariff function is enabled and activated o the energy counting is done in x 8 0 and the active tariff register x 8 1 or x 8 ...

Page 24: ...following table The tariff control mode can be set in the configuration register Terminal Activated tariff 13 15 0 V 0 V T1 230VAC 0 V T2 0 V 0 V T2 230VAC 0 V T1 Table 8 Tariff control modes In case of two energy directions A A the tariff registers x 8 1 and x 8 2 are controlled simultaneously Terminal control has lower priority than LMN interface commands 13 1 5 Tariff control LMN interface The ...

Page 25: ...____________________________________________________________________ Copyright DZG Metering GmbH Heidelberger Str 32 D 16515 Oranienburg Copies only are allowed authorized by DZG 2 22 2019 Page 25 37 13 1 6 Status diagram tariff control ...

Page 26: ..._____________________________________________________________________ Copyright DZG Metering GmbH Heidelberger Str 32 D 16515 Oranienburg Copies only are allowed authorized by DZG 2 22 2019 Page 26 37 13 1 7 Display and INFO interface ...

Page 27: ...values Ring buffer with 730 entries A 730 entries A dependent from the measurement mode The time counting is only running when the meter is powered on at least 1 phase Current day demand is calculated on 1h values after 24 hours it s copied to 1d 1 and set to 0 The first value is calculated when the corresponding period w m y is finished It s calculated based on 1d values 1d 1 to 1d 730 The demand...

Page 28: ...e display user key 13 3 1 Definitions Abbreviation Definition Meaning sUKey 4s 0 5s short User Key lUKey 5s long User Key UKey without time definition User Key without time control Δt1 120s 10s Δt2 3s Δt3 2s 0 5s Δt4 5s 1s Δt5 10s hv PINact PINnact PIN Code protection activated not activated Pact Pnact Display P activated not activated HVact HVnact Display historical values activated not activated...

Page 29: ...ing GmbH Heidelberger Str 32 D 16515 Oranienburg Copies only are allowed authorized by DZG 2 22 2019 Page 29 37 13 3 3 Enter PIN Code 13 3 4 Start after Power ON After power on and PIN code protection activated PINact the meter starts with Display of historical value OFF Display of P OFF INFO interface with short data list ...

Page 30: ... of energy register in the first line is stopped 1 8 0 register with OBIS Code is displayed when historical value E 1d 7d 30d 365d for A are displayed on second line 2 8 0 register with OBIS Code is displayed when historical values for A are displayed in second line When the historical value isn t already available is displayed For previous values in the first line the index is displayed with n f ...

Page 31: ...S74 __________________________________________________________________________________ Copyright DZG Metering GmbH Heidelberger Str 32 D 16515 Oranienburg Copies only are allowed authorized by DZG 2 22 2019 Page 31 37 ...

Page 32: ...he display Access Level R read only R W read write M write only in manufacturer mode No Name OBIS Hex notation Length Format Unit Acces s level 1 Phase L1 voltage 01 00 20 07 00 FF 4 U32 Hex Big Endian 0 01V bit R 2 Phase L1 current 01 00 1F 07 00 FF 4 U32 hex Big Endian 0 001A bit R 3 Phase L1 Active power 01 00 24 07 00 FF 4 S32 hex Big Endian 0 01W bit R 4 Phase L1 power factor 01 00 21 07 00 F...

Page 33: ...ly R W read write M write only in manufacturer mode No Name OBIS Hex notation Length Format Unit Access level 1 Tariff function 01 01 60 60 05 FF 1 Meter version with without tariff function f e 0 no tariff function 1 tariff function LMN and terminals 13 15 R M 2 TarifControlReg 01 00 5E 31 01 0D 1 Hex Big Endian R W 3 LMN tariff control 01 00 5E 31 01 0C 1 Boolean R W 4 Display status 00 00 60 05...

Page 34: ...y 01 01 01 08 00 00 4 4 4 SI A A R 3 Historic Daily 1 01 01 01 08 00 01 4 4 4 SI A A last 1 R Historic Daily 730 01 01 01 08 02 DA 4 4 4 SI A A last 730 R 4 Current Weekly 01 02 01 08 00 00 4 4 4 SI A A R 5 Historic Weekly 1 01 02 01 08 00 01 4 4 4 SI A A last 1 R Historic Weekly 104 01 02 01 08 00 68 4 4 4 SI A A last 104 R 6 Current Month 01 03 01 08 00 00 4 4 4 SI A A R 7 Historic Month 1 01 03...

Page 35: ...ummation current over all conductors is less than the starting current 9 Manipulation magnetic interface The status bit is required only if the optional manipulation detection is present It shall be set to 0 if the meter is impossible to be magnetically interfered with within the limits defined in the Reliability Specification see FNN Leitfaden Zuverlässigkeit 1 interference detected Is set to 1 i...

Page 36: ...ut return stop the condition 0 shall be used For idleness the condition 0 shall be assumed 1 stop engaged 0 stop not engaged 17 Error relevant for calibration purposes Set to 1 when an error is detected which causes the measurement values to be impermissible for use for billing purposes fatal error 0 not an error relevant for calibration purposes 18 Line voltage L1 The threshold value for signalin...

Page 37: ... dependent from the load are recommended Load pulses Ist Itr 1 Iref 4 Imax 14 Table 13 Quantity of pulses 16 Manufacturing The final assembling is done by DZG Oranienburg GmbH The meters are evaluated for conformity according to the specifications of the Module D procedure DZG Oranienburg GmbH has a certified quality management system in accordance with DIN EN ISO 9001 and is the responsible body ...

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