Bender ISOMETER isoGEN423 Manual page 4

Table of contents
4 Operation.......................................................................................................... 18
4.1 Operating and display elements.............................................................................................................18
4.2 Menu overview...............................................................................................................................................20
4.3 Displaying measured values..................................................................................................................... 21
4.4 Setting the response values (AL)............................................................................................................ 22
4.4.1 Response values overview.........................................................................................................................22
4.4.2 Setting the insulation resistance parameters.....................................................................................22
4.4.3 Setting parameters for undervoltage and overvoltage..................................................................22
4.5 Configuring fault memory, alarm relays, and interfaces (out)......................................................23
4.5.1 Configuring the relays.................................................................................................................................23
4.5.2 Allocating messages to the relays.......................................................................................................... 23
4.5.3 Activating or deactivating fault memory.............................................................................................24
4.5.4 Configuring interfaces.................................................................................................................................24
4.6 Setting delay times and self test cycles (t).......................................................................................... 24
4.7 Setting device control parameters (SEt)...............................................................................................25
4.8 Reset to factory settings.............................................................................................................................25
4.9 Showing and deleting the history memory........................................................................................26
4.10 Querying software version (InF).............................................................................................................. 26
5 Data access via interfaces................................................................................27
5.1 Data access using the BMS protocol..................................................................................................... 27
5.2 IsoData data string....................................................................................................................................... 27
5.3 Data access using the Modbus RTU protocol.................................................................................... 28
5.3.1 Reading out the Modbus register from the ISOMETER®.................................................................28
5.3.2 Writing the Modbus register (parameter setting).............................................................................29
5.3.3 Exception code...............................................................................................................................................30
5.3.4 Modbus register assignment.................................................................................................................... 31
5.3.5 Device-specific data types......................................................................................................................... 34
6 Technical data...................................................................................................40
6.1 Tabular representation................................................................................................................................40
6.2 Standards and certifications..................................................................................................................... 45
6.3 Device overview.............................................................................................................................................45
4 isoGEN423_D00221_05_M_XXEN