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Related Manuals for LEM DCBM 400 Series
Summary of Contents for LEM DCBM 400 Series
- Page 1 E-Mobility solutions DCBM 400/600 Series - DC Energy Meter Operation manual 21January2021/Version 0...
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Page 2: Table Of Contents
Product introduction ....17 3.1. LEM and the DCBM ......17 3.2. - Page 3 5.4.1.4. Setting cableId value ........45 Page 3/95 LEM International SA 21January2021/Version 0...
- Page 4 Effect of buttons ........59 Page 4/95 LEM International SA 21January2021/Version 0...
- Page 5 Overview ........77 Page 5/95 LEM International SA 21January2021/Version 0...
- Page 6 Other software issues ......93 Appendix - PTB type-examination certificate for DCBM 94 Page 6/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com...
- Page 7 Integration examples using cable loss compensation ........44 Figure 27. Distribution of values depending on product designation ....... 45 Figure 28. Integration example for four-wire measurement ..........46 Page 7/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com...
- Page 8 Illustration of using value field, example for status register ......78 Figure 46. Status field persistence ..................78 Figure 47. Specific reversedVoltage status persistence ..........79 Figure 48. Transaction status field persistence ..............80 Page 8/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com...
- Page 9 List of status flags ................... 79 Table 12. List of error flags ....................81 Table 13. OCMF EF field equivalents ................. 82 Table 14. OCMF ST field equivalents ................. 82 Page 9/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com...
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Page 10: Safety Rules
Electrical equipment should be installed, operated, serviced and maintained only by qualified personnel. No responsibility is assumed by LEM International SA for any consequences arising out of the use of this material. A qualified person is one who has skills and knowledge related to the construction, installation, and operation of electrical equipment and has received safety training to recognize and avoid the hazards involved. -
Page 11: Important Notices
The following symbols point out critical information. They can be found either in this document or on the product. Instruction manual Heating Warning Electrical hazard Double insulation The following symbols aim at improving reader's experience by highlighting sections. Note Page 11/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 12: Document Information
DCBM 400/600 product family with associated steps in product lifetime. Datasheet Installation manual Operation manual Communication Protocols manual Figure 2: Documentation set for DCBM 400/600 product family Page 12/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 13: Document Issue
2.2. Document issue Targeted Product DCBM 400/DCBM 600 Release scope Public 2.3. Company details LEM International SA Chemin des Aulx 8 1228 Plan-les-Ouates Switzerland 2.4. Revision history Version Date Changes 21January2021 First issue 2.5. Related documents Name Revision Datasheet Publication pending... -
Page 14: Abbreviations
Real-Time Operating System S.A.F.E. Software Alliance For E-mobility SELV Separated Extra-Low Voltage Sensor Unit Transport Layer Security URL / URI Uniform Resource Locator / Identifier Page 14/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 15: Disclaimer
This document shall not be reproduced, copied, adapted, translated, arranged or modified without written permission from LEM, and the content, in whole or in any part, shall not be used for any purpose other than describing LEM DCBM. LEM will retain all intellectual property rights in and to this document. -
Page 16: Warranty
For information about applicable warranty for the DCBM, contact your nearest LEM sales representative. In the absence of any written agreement with LEM governing the sale of the DCBM to you, LEM general terms and conditions of sale as referred on the order confirmation shall apply. LEM... -
Page 17: Product Introduction
3. Product introduction 3.1. LEM and the DCBM Leading the world in electrical measurement, LEM engineers the best solutions for energy and mobility, ensuring that its customers’ systems are optimized, reliable and safe. Enabling Better Billing for EV Charging Points The automotive world is seeing a rapid transition to electric vehicles, driven by concern for the environment and accelerated by legislation. -
Page 18: Dcbm In Ev Charging Systems
3.2. DCBM in EV charging systems LEM Direct Current Billing Meters with 400 A and 600 A ratings, are connected DC energy meters, referred to as "DCBM" in this document. They are dedicated to energy metering in the field of DC applications such as fast and ultra-fast charging station for Electric Vehicles (covered by IEC 61851-23). -
Page 19: Figure 4. Product Construction
• Cable loss compensation • Ethernet communication with HTTP/HTTPS • Signed data readouts in OCMF or LEM format • Monitoring data (current / voltage / temperature / energy) • Transaction mechanisms with start & stop tags and client identification •... - Page 20 To cover the different power ratings of charging systems, the DCBM is available for 2 current ratings: = 400 A or = 600 A. Two additional variants of Sensor Unit offer measurement with current measurement in the opposite direction. Page 20/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com...
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Page 21: Dcbm 400/600 In Evse
3.3. DCBM 400/600 in EVSE This part describes the integration of LEM DCBM into different kind of Electric Vehicle Supply Equipment (EVSE). Two examples are given: a 50 kW power class system, and a 350 kW power class system. 3.3.1. DCBM in 50 kW EVSE The following figure presents the typical structure used in 50 kW power class charging systems. -
Page 22: Dcbm In 350 Kw Evse
175kW Module 175kW Module Liquid Liquid cooled cooled cable cable CHAdeMO CHAdeMO AC grid DC Bus DC Bus Figure 7: Typical 350 kW EVSE system Page 22/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 23: Figure 8. Dcbm In A Typical 350 Kw Evse
In such compact and space-limited environment, the specific split construction of the DCBM makes it easy to integrate, just as other electrotechnical components like power relays, power diodes or DC link fuses. Page 23/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland... -
Page 24: Certification And Compliance
Fix compensation factor current flow factor Normal DCBM_N0D_6000_0000 DCBM_N1D_6000_0000 ... DCBM_N4D_6000_0000 Reverse DCBM_N0D_6010_0000 DCBM_N1D_6010_0000 ... DCBM_N4D_6010_0000 Figure 10: Simplified list of references for 600 A current rating Page 24/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 25: Figure 11. Full List Of References For The Dcbm 400/600 Product Family
Figure 11: Full list of references for the DCBM 400/600 product family The complete type designation of the whole DCBM is marked as relevant designation on the name plate of the Meter Unit. Page 25/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland... -
Page 26: Device Description And Mechanical Integration
The Meter Unit and Sensor Unit included in the package are paired and cannot be swapped with another set. Protection cover shall be mounted to ensure IP20 rating on the terminal areas. Page 26/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 27: Meter Unit Description
4.2.1. Meter Unit 4.2.1.1. Mounting Click! To mount the Meter Unit, place it onto the DIN rail and rotate it backwards, until hearing the ‘click’. Page 27/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 28: Unmounting
The Sensor Unit can be positioned on a DIN Rail TH 35-7.5 or TH 35-15 (IEC 60715: 2017) The Sensor Unit shall be fixed with 4x M4 screws with washer. Screw head + washer ≤ 4.5 mm, • max torque 3.5 N⋅m. Page 28/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 29: Product Dimensions
Figure 13: Meter Unit aperture for electrical cabinet 64 mm (±0.2 123 mm (±0.2) 67.2 mm: DIN rail TH 35-7.5 74.7 mm: DIN rail TH 35-15 Page 29/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 30: Sensor Unit
5.5 mm 132 mm (±0.2) 132 mm (±0.2) 33.5 mm (±0.2) 51.6 mm (±0.2) 11.2 mm (±0.2) 11.2 mm (±0.2) 480mm (±0.2) 66 mm (±0.2) Page 30/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 31: Connection
0,13 ... 1,5 mm² 8 mm 0.31 in. 24 ... 16 AWG Click! Click! Click! Figure 15: DCBM connection Ethernet cable Data Link cable Bus bars or lugs Page 31/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 32: Figure 16. Connection And Wiring Diagrams
VN Com Reverse current flow / Stromfluss Revers / Courant indirect Reverse current flow / Stromfluss Revers / Courant indirect Figure 16: Connection and wiring diagrams Page 32/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 33: Figure 17. Sensor Unit Integration
Size of stud torque (N.m) hole (mm) DCBM_SU40XX 10.4 ±0.5 Fire hazard DCBM_SU60XX 36.4 ±0.5 12.5 Table 2: Torque values for installation Table 3: Bus bar drilling Page 33/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 34: Cable Management
Using installation seals is strongly recommended as unauthorized unmounting could lead to: • Electrical risks • Malfunction of the device (unavailable power supply or communication link) • Alteration to device configuration • Any software attacks Page 34/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 35: Disposing
Seal the Meter Unit DCBM_SU400XX DCBM_SU600XX Click! The sealing wires are not provided by LEM. Max diameter of the sealing wire ⌀ ≤ 2.2 mm 4.7. Disposing The device packaging materials can be recycled. Please help protect the environment by recycling them in appropriate containers. -
Page 36: Marking
Public Key Status 1000 imp/kWh Status 1000 imp/kWh 20 0103 DE-M DE-20-M-PTB-0016 LEM INTERNATIONAL SA Chemin des Aulx 8, 1228 Plan-les-Ouates, Switzerland Chemin des Aulx 8, 1228 Plan-les-Ouates, Switzerland DCBM Serial Number 2020 1202340856 DCBM Series DC Energy Meter Status... -
Page 37: Electrical Functions
Two types of references are available, matched with different counting direction: Naming Counting direction References designation Direct DCBM_Nxx_xx00_xxxx Reverse DCBM_Nxx_xx10_xxxx Table 4: Counting direction references Page 37/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 38: Voltage Side
These possibilities offer flexible integration in existing environments. Hence the choice depends on existing architecture or foreseen integration. Decision influences how voltage inputs must be connected, as described in next sections. Page 38/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland... -
Page 39: Direct Counting Direction Connection Requirements
Figure 21: Connection for direct counting direction references (DCBM_NxD_x000_0000) Meter Unit Charging station bus bars Ethernet Cable Sensor Unit Data link cable Voltage measurement cable + Current flow Voltage measurement cable - Page 39/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 40: Reverse Counting Direction Connection Requirements
Figure 22: Connection for reverse counting direction references (DCBM_NxD_x010_0000) Meter Unit Charging station bus bars Ethernet Cable Sensor Unit Data link cable Voltage measurement cable + Current flow Voltage measurement cable - Page 40/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 41: Energy Registering
• If voltage is below datasheet value "Minimum limit range of operation " • If current is between ("Starting current" as in datasheet) Page 41/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 42: Handling Energy Losses
If no compensation is performed on the measurement, the total resistance will bend the accuracy characteristic of the metering system. This bending will be more significant at low system voltage. Page 42/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 43: Figure 25. Current Accuracy Graphs With And Without Cable Loss Compensation
Figure 25: Current accuracy graphs with and without cable loss compensation When no compensation is implemented, the metering system does not subtract the losses of electrical circuit; therefore the measurement energy is too high. Page 43/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland... -
Page 44: Compensation Mechanism
. The compensated energy is integration of compensated power, calculated as follows: With: & Compensated power & voltage compensated compensated & Measured current & voltage measured measured Resistive compensation Page 44/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 45: Setting The Compensation Level
The following items are excluded from compensation: • Exported energy is not compensated • Live voltage, current, power are never compensated • Any energy outside transactions is not compensated Page 45/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 46: Four-Wire Measurement
High current relays Ethernet DC Fuse Power supply Imeas Meter Unit Sensor Unit DC link from power converters Figure 28: Integration example for four-wire measurement Page 46/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 47: Performances
Rated operational voltage 1000 Insertion loss in current path Rated operational voltage 1000 Insertion loss in current path DCBM-SU40xx Rated short time withstand current DCBM-SU60xx 30 ms Page 47/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 48: Accuracy
Case material According to UL 94 Note: Reinforced insulation is provided by the Sensor Unit (DCBM-SU40xx/DCBM-SU60xx). The DCBM Meter Unit operates in SELV only Page 48/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 49: Operating Conditions
−50 +120 kV AC 0.6/1 kV AC Nominal voltage kV DC 0.9/1.5 kV DC Test insulation voltage See product designation for Length complete product references Page 49/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 50: Display And Navigation
On powering up the DCBM, the following screens will be displayed successively. In particular, the following data allow metrological validation: • The public key during the boot sequence, for further data authenticity check of LEM format (i.e. without OCMF RFC5480 header) •... -
Page 51: Step 2 - Check Transaction Data
Description of those screens is available in section "6.5. Transactions screens". Figure 30: Sequence of screens for beginning of transactions Figure 31: Sequences of screens for end of transactions Page 51/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 52: Step 3 - Achieve Further Validation
Duration of the transaction, at the end of the transaction • Public key for LEM format authenticity check (i.e. without OCMF RFC5480 header) 6.1.3. STEP 3 - Achieve further validation Outside transactions, buttons give free access to data, which can help checking metrological status and registers. -
Page 53: General Display Concepts
Legally Legally non- relevant lines relevant lines On regular light On inverted dark background background Figure 35: Visual distinction for legal relevance on the display Page 53/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 54: Boot Screens
Serial number of device Identifiers of the versions of each firmware parts Integrity checksums for legally relevant firmware parts Public key of the device, for LEM format authenticity check (i.e. without OCMF RFC5480 header) 5-8/8 Screen test sequence 6.3.2. Effect of buttons Buttons used in this state abort the sequence and lead to the maintenance state. -
Page 55: Idle Screen
6.5.1. Layout of screens All the transaction screens are built as follows: Current Rolling state data symbol Transaction energy counter Figure 36: Transaction screens layout Page 55/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 56: State Symbols
(an unused register has an energy exactly equal to 0.000 kWh). In case both registers were used, both are displayed successively. Page 56/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland... -
Page 57: Rolling Data
EVSE identifier input Client identifier input Data on rolling pane Tariff identifier Elapsed time of the transaction Live charge power (not to be used for billing purposes) Page 57/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 58: Effect Of Buttons
Status of the time synchronization for this transaction, featuring validity and mode of synchronization (not to be used for billing purposes) Public key of the device, for LEM format authenticity check (i.e. without OCMF RFC5480 header) 6.5.5. Effect of buttons... -
Page 59: Maintenance State
Move on to next Maintenance state category Move on to next screen within the current Bottom button pressed Maintenance state category Button long-pressed or buttons pressed Exit the Maintenance state simultaneously Page 59/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 60: Available Data
Screen Included data index Status of the data link between the two parts Current direction of the energy flow 2-5/5 Screen test, over 4 screens Page 60/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 61: Live Measure Category
Total import energy register Total export energy register Live voltage and current Live power Live temperature of the two terminals of the Sensor Unit Page 61/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 62: Device Category
6.6.4.3. DEVICE category Screen Included data index Serial number and IP address of the device Public key of the device, for LEM format authenticity check (i.e. without OCMF RFC5480 header) Page 62/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 63: Firmware Category
Identifier and checksum for the firmware of the Sensor Unit Note: This firmware is fully legally relevant Identifier and checksum for the legally non-relevant firmware of the Meter Unit Page 63/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland... -
Page 64: Clock Category
Offsets of local time versus UTC: time zone offset and daylight savings time offset Status of time synchronization: current validity and synchronization mode Type of time management (info time or system time) Page 64/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland... -
Page 65: Error Screen
The current error code (see "7.5.5. Errors") The rest of the screen is static. Buttons allow access to the Maintenance screens, which could provide beneficial information during troubleshooting. Page 65/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 66: Index Of Symbols In Screens
Data symbol: Client identifier for current transaction 0.0.96.58.0.255 evseId (/legal) Data symbol: EVSE identifier for current transaction 0.0.96.57.0.255 cableSp/cableSpId (/legal) Data symbol: Cable identifier for current transaction 0.0.96.59.0.255 Page 66/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 67: Metrology
Data symbol: Temperature measured on side I1 temperatureL (/livemeasure) 1.0.131.7.0.255 Data is legally non-relevant Data symbol: Temperature measured on side I2 temperatureH (/livemeasure) Data is legally non-relevant 1.0.130.7.0.255 Page 67/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 68: Time Management
Data symbol: Firmware Checksum / Signature version/applicationFirmwareAuthTag - 1.1.0.2.8.255 version/legalFirmwareAuthTag - 1.0.0.2.8.255 • LR firmware version/sensorFirmwareCrc - 1.2.0.2.8.255 • LNR firmware (/status) • Sensor Unit firmware Page 68/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 69: Software Concepts
192.168.1.2/v1/livemeasure Live measurements Transaction management (start & stop) and 192.168.1.2/v1/legal GET, PUT, POST transaction data structure, current or stored, in LEM proprietary format Transaction data structure, current or 192.168.1.2/v1/ocmf stored, in certified, billable, OCMF- compliant format 192.168.1.2/v1/certificate HTTPS certificate of the DCBM... -
Page 70: Transactions
Charger controller Start command Intermediate readings Iden�fiers from Charger [op�onal] Data structure controller from DCBM Acknowledgement of the start command from DCBM Figure 40: Transaction concept Page 70/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 71: Conditions To Start And Input Parameters
7.2.2. Conditions to start and input parameters Prerequisites to a start command are: • (1) The Meter Unit and Sensor Unit are mounted as per LEM instructions • (2) There is no fatal error raised • (3) There is no running transaction •... -
Page 72: Transaction Readouts
Certified, billable, OCMF-compliant format in /ocmf API (see 7.1) (see "3.4. Certification and compliance") For backend storage, OCMF format shall be preferred over LEM format. See "7.3.1. Energy registering". Four modes of access are available. All the readings of transactions are digitally signed. -
Page 73: Memory Depth
If a total of 20399 were not saved, the charger controller shall prevent any new transactions until upload is possible. Otherwise, the oldest transaction is deleted each time a new one is started. Page 73/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 74: Measurements
• in the transaction data structures (both /ocmf and /legal) and on transaction screens, as frozen values corresponding to the start and end of the transaction Page 74/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland... -
Page 75: Transaction Energy Registers
On HTTP/REST, those measurements are available only through /livemeasure API (see §7.1). On the screen, they can be accessed on maintenance screens, in Livemeasure category. Power is also available on transaction in progress screen. Page 75/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland... -
Page 76: Data Authenticity
Table 10: Solutions for signatures verification Verification solutions are given as examples. • LEM DCBM verification software is available on LEM website or from LEM support • OCMF transparency software is available at https://transparenz.software/ For /legal to be usable for billing in regards to certification, it shall be re-signed by the charger controller. -
Page 77: Status And Errors Flags
“reversedVoltage”: false, “suIntegrityIsFailed”: false, “suMeasureFailureOccurred”: false “logbookIntegrityIsFailed”: false, “logbookIsFull”: false, “memoryAccessIsFailed”: false, “muStateIsFailed”: false Figure 44: Description of the 2 formats of status and errors Page 77/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 78: Current Status
Associated conditions can raise the flags. Once the condition disappears, the corresponding flag does too. transactionOngoing Status value Nominal Time Figure 46: Status field persistence Page 78/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 79: Figure 47. Specific Reversedvoltage Status Persistence
Blocker: New transactions are rejected until status bit returns to nominal mode, event is logged. 17 is the status value corresponding to the nominal state of the DCBM, when ready for a transaction. Page 79/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 80: Transactionstatus Field
Nominal Time Figure 49: Transaction status field persistence 17 is the transaction status corresponding to a transaction which finished successfully, and which is therefore billable. Page 80/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 81: Errors
Any time memoryAccessIsFailed Rejected access to memory Any time muStateIsFailed Unexpected error in the Meter Unit Every 30 minutes Table 12: List of error flags Page 81/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 82: Ocmf Error And Status Fields
6 for others Table 14: OCMF ST field equivalents Statuses have direct equivalents, while errors represented through status muFatalErrorOccured, i.e. in OCMF ST field with value E. Page 82/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 83: Event Logbook
The logbook is digitally signed to ensure its authenticity (authentication and integrity). Refer to section "7.4. Data authenticity". The list of events is available in the Communication Protocols manual. Page 83/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland... -
Page 84: Connectivity Settings
/settings API will not be updated according to dynamic DHCP address, as it is an input for static addressing. Page 84/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland... -
Page 85: Dns
7.7.1.3. DNS The DCBM can be reached using its DNS name, just like using its IP address. The DCBM's DNS name is "lem-meter". 7.7.2. HTTP & TLS 7.7.2.1. HTTPS HTTP transports data on a clear channel, readable by any other device on the network. The DCBM supports TLS, for HTTPS communication. -
Page 86: Time Management
API. Switching mode has no effect on status of synchronization or on the 48 hours timeout. In case NTP is used (ntpEnabled = true), achieving a time synchronization by command automatically disables /ntp/activated boolean (i.e. sets ntpEnabled = false) Page 86/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 87: Command Time Synchronization
48 hours. • The synchronization failed. Synchronization status is not discarded; it stays valid until expiration (48 hours after the last valid synchronization). Page 87/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... -
Page 88: Local Time
DST once and for all (DST does not have to be manually activated and deactivated). The hour subfields (in fields start and end) shall be expressed in local time. Page 88/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland... -
Page 89: Troubleshooting
Tampering is currently True 2. Check the integrity of the device: manufacturer seals, front panel of the Meter Unit, Meter Unit detected housing forced open Page 89/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... - Page 90 1. EMC surge may have occurred. Make sure to use a ferrite as recommended (refer to "5.2. An error occurred in Integration solutions"), check for other possible EMC interferences and limit them True Sensor Unit ADC 2. Restart the DCBM Page 90/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com...
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Page 91: Raised Errors
CRC error on the minutes) True operation data of the Meter Unit 2. If not sufficient, then the memory is corrupted (global energy registers might be jeopardized) Page 91/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com... - Page 92 Unexpected error in minutes) True the Meter Unit 2. If not sufficient, reboot again a few more times or wait for a couple of hours Page 92/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com...
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Page 93: Other Software Issues
DCBM can be reverted to available ("0.0.0.0" is fallback address for this case) a regular IP address. LEM support can provide a walkthrough guide to do so. This address is not reachable by any device, hence there is no solution to revert the DCBM to... -
Page 94: Appendix - Ptb Type-Examination Certificate For Dcbm
9. Appendix - PTB type-examination certificate for DCBM Page 94/95 LEM International SA 21January2021/Version 0 Chemin des Aulx 8 1228 PLAN-LES-OUATES Switzerland www.lem.com...
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