LEM EM4TII+, Manual

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05November2020/V1.0 Page 2/33
Table of contents
1. Safety instructions and hazard warnings ............................................................................................. 3
2. Product description ................................................................................................................................ 4
3. Installation and connection ................................................................................................................... 7
3.1 Wall mounting ............................................................................................................... 7
3.2 Electrical connection ..................................................................................................... 9
4. Displays and parameterization, data interfaces ................................................................................ 11
4.1 Display screen and operating display ......................................................................... 11
4.2 Parameters and reading out meter data...................................................................... 14
4.2.1 Protocol diagram ........................................................................................................ 14
4.2.2 Command and data formats ....................................................................................... 15
4.2.3 Communication cycle .................................................................................................. 18
4.2.4 Access authorizations ................................................................................................. 19
4.2.5 OBIS codes ................................................................................................................ 19
4.2.6 Structure of load profile compilation ............................................................................ 22
4.2.7 Recognition of the traction power system ................................................................... 25
4.2.8 Error register (F.F) ...................................................................................................... 26
4.2.9 Examples of read-outs from the ................................................................... 27
4.3 Data input for GPS receiver connection ...................................................................... 29
5. Maintenance .......................................................................................................................................... 30
6. Measurement ........................................................................................................................................ 31
6.1 Measuring principle .................................................................................................... 31
6.2 Formula: generation of measured values .................................................................... 31
7. Technical data ....................................................................................................................................... 32
7.1 General specifications ................................................................................................ 32
7.2 Applied standards and regulations .............................................................................. 33
Revisions
Version Date Evolution
Preliminary 2020-10-30 Creation- Preliminary version
V1.0 2020-11-05 First official version