Table Of Contents - Baer DLX User Manual

1 Scope of Application ................................................................................................... 9
1.1 Application environment ....................................................................................... 9
1.2 Short description ................................................................................................ 10
2 Device Description .................................................................................................... 11
2.1 Features ............................................................................................................. 11
2.2 Block circuit diagram of modules ........................................................................ 13
2.2.1 Description of the block circuit diagram of modules .............................. 14
3 Functional Description.............................................................................................. 15
3.1 Functional circuit diagram .................................................................................. 15
3.2 Data protection and safety ................................................................................. 16
3.3 Program code .................................................................................................... 16
3.4 Setting of parameters (Programming the DLX) ................................................... 16
3.4.1 Program protection switch .................................................................... 17
3.5 Pulse processing ................................................................................................ 19
3.5.1 Pulse inputs .......................................................................................... 20
3.5.2 Analogue input (Signal current input) .................................................... 22
3.5.3 Summation registers ............................................................................. 22
3.5.4 Pulse outputs ........................................................................................ 24
3.5.5 Apparent demand and cos(ϕ) ............................................................... 24
3.5.6 Maximum demand calculation .............................................................. 25
3.5.7 Maximum demand reset ....................................................................... 25
3.5.8 Periodical buffer (Billing data) ............................................................... 25
3.5.9 Pulse barrier ......................................................................................... 26
3.5.10 Instantaneous value ............................................................................. 26
3.6 Time basis .......................................................................................................... 26
3.6.1 Setting the real time clock ..................................................................... 26
3.6.2 Automatic summertime switching ......................................................... 27
3.6.3 Synchronization .................................................................................... 27
3.6.4 Registration period ............................................................................... 28
3.7 Rate dependent processing ............................................................................... 29
3.7.1 Rate control .......................................................................................... 29
3.7.2 Rate calendar ....................................................................................... 30
3.7.3 Rate control inputs ................................................................................ 32
3.8 Storage of measurements .................................................................................. 33
3.8.1 Internal memory.................................................................................... 33
3.8.1.1 Unit restart (Loading of factory default settings) ............................. 33
3.8.1.2 Unit warm start .............................................................................. 33
3.8.1.3 Unit cold start ................................................................................. 34
3.8.1.4 Erase memory ............................................................................... 34
3.8.2 Security mechanisms for data storage .................................................. 34
3.8.3 Block diagram of internal memory ........................................................ 34
3.8.4 Capacity of internal memory ................................................................. 35
3.8.5 Capacity of backup memory (PC-Card) ................................................ 36

Table of contents

3