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LEM DCBM 400 Series Operation Manual

Dc energy meter

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Table of Contents

Table of Contents
Safety Rules
Safety Warning
Important Notices
Symbols and Conventions
Document Information
Document Overview
Figure 1. Documentation Information Versus Associated Publics
Figure 2. Documentation Set for DCBM 400/600 Product Family
Document Issue
Company Details
Revision History
Related Documents
Abbreviations
Disclaimer
Intellectual Property Rights
Third Party Licensing
Warranty
Product Introduction
LEM and the DCBM
DCBM in EV Charging Systems
Figure 3. Namings Designating Equipment and Protagonists
Figure 4. Product Construction
DCBM 400/600 in EVSE
DCBM in 50 Kw EVSE
Figure 5. Typical 50 Kw Architecture
DCBM in 350 Kw EVSE
Figure 6. DCBM in a Typical 50 Kw EVSE
Figure 7. Typical 350 Kw EVSE System
Figure 8. DCBM in a Typical 350 Kw EVSE
Certification and Compliance
Standards
Certification
Product Designation
Figure 9. Simplified List of References for 400 a Current Rating
Figure 10. Simplified List of References for 600 a Current Rating
Figure 11. Full List of References for the DCBM 400/600 Product Family
Device Description and Mechanical Integration
Package Content
Meter Unit Description
Sensor Unit Description
Mounting and Unmounting
Meter Unit
Mounting
Unmounting
Sensor Unit
Product Dimensions
Meter Unit
Figure 12. Meter Unit Dimensions
Figure 13. Meter Unit Aperture for Electrical Cabinet
Sensor Unit
Figure 14. Sensor Unit Dimensions
Connection
Figure 15. DCBM Connection
Figure 16. Connection and Wiring Diagrams
Table 1. Ports Definition
Figure 17. Sensor Unit Integration
Table 2. Torque Values for Installation
Table 3. Bus Bar Drilling
Cable Management
Sealing
Manufacturer Seals
Installation Seals
Figure 18. Cable Management
Figure 19. Manufacturer Seals
Disposing
Marking
Electrical Functions
Safety Features
Integration Solutions
Overview
Counting Direction
Table 4. Counting Direction References
Voltage Side
Figure 20. Import and Export Energy Registers Matched with Energy Flow
Direct Counting Direction Connection Requirements
Figure 21. Connection for Direct Counting Direction References (Dcbm_Nxd_X000_0000)
Reverse Counting Direction Connection Requirements
Figure 22. Connection for Reverse Counting Direction References (Dcbm_Nxd_X010_0000)
Energy Registering
Figure 23. Counting Quadrants for the DCBM
Handling Energy Losses
Cable Loss Compensation
Principle
Figure 24. Example of Energy Losses in an EVSE Electrical Circuit
Figure 25. Current Accuracy Graphs with and Without Cable Loss Compensation
Compensation Mechanism
Figure 26. Integration Examples Using Cable Loss Compensation
Setting the Compensation Level
Setting Cableid Value
Figure 27. Distribution of RP
Four-Wire Measurement
Figure 28. Integration Example for Four-Wire Measurement
Performances
General
Accuracy
Insulation
Operating Conditions
Sensor Unit
Meter Unit
Data Link Cable
Display and Navigation
Quick Start
STEP 1 - Power up the DCBM
Figure 29. Sequence of Screens on Boot and During Idle
STEP 2 - Check Transaction Data
Figure 30. Sequence of Screens for Beginning of Transactions
Figure 31. Sequences of Screens for End of Transactions
STEP 3 - Achieve Further Validation
Figure 32. Maintenance Screens Which Can Help Metrological Validation
General Display Concepts
Figure 33. Global State Machine of the Display
Figure 34. Identification of Buttons
Figure 35. Visual Distinction for Legal Relevance on the Display
Boot Screens
Overview
Effect of Buttons
Idle Screen
Overview
Available Data
Effect of Buttons
Transactions Screens
Layout of Screens
Figure 36. Transaction Screens Layout
State Symbols
Transaction Energy Register
Figure 37. State Machine for Transaction Screens
Figure 38. Transaction Energy Register
Rolling Data
Effect of Buttons
Maintenance State
Overview
Layout of Screens
Effect of Buttons
Figure 39. Maintenance Screens Layout
Available Data
STATUS Category
LIVE MEASURE Category
DEVICE Category
FIRMWARE Category
CLOCK Category
Error Screen
Index of Symbols in Screens
Transaction-Specific
Metrology
Time Management
Other Data
Software Concepts
Interfaces
Table 5. REST API Access and Associated HTTP Methods
Transactions
Concept
Figure 40. Transaction Concept
Conditions to Start and Input Parameters
Figure 41. Example of Body for Start Request
Table 6. Transaction Preconditions in Device Implementation
Table 7. Required Inputs to a New Transaction
Transaction Readouts
Table 8. Solutions for Retrieving Past Transactions
Memory Depth
Required Action Following a Transaction
Fallback Procedure for Unavailable Upload
Measurements
Energy Registering
Bidirectional Current Flow
Total Energy Registers
Table 9. Measurement Results, Metrologically Relevant
Transaction Energy Registers
Other Measurements
Figure 42. "Transaction" Vs "Total" Energy Registers (Import or Export)
Data Authenticity
Overview
Keys Specifics
Figure 43. Keys Specifics for Signature Checks
Table 10. Solutions for Signatures Verification
Status and Errors Flags
Overview
Status/Errors Value Field Description
Figure 44. Description of the 2 Formats of Status and Errors
Current Status
Figure 45. Illustration of Using Value Field, Example for Status Register
Figure 46. Status Field Persistence
Figure 47. Specific Reversedvoltage Status Persistence
Table 11. List of Status Flags
Transactionstatus Field
Figure 48. Transaction Status Field Persistence
Errors
Table 12. List of Error Flags
OCMF Error and Status Fields
Table 13. OCMF EF Field Equivalents
Table 14. OCMF ST Field Equivalents
Event Logbook
Connectivity Settings
IP Addressing
Static Addressing
Dhcp
Dns
Http & Tls
Https
HTTP Port
Time Management
Time Synchronization
Overview
General Constraints
Synchronization Solutions
Command Time Synchronization
NTP Synchronization
Local Time
Time Zone
Daylight Saving Time
Troubleshooting
Wrong Statuses
Raised Errors
Other Software Issues
Appendix - PTB Type-Examination Certificate for DCBM

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DCBM 400/600 Series - DC Energy Meter

Operation manual

21January2021/Version 0

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