MR MESSKO MTRAB - Page 5

Table of contents
5BA6820378-03 EN
6.5 Connecting the supply voltage....................................................... 58
6.6 Connecting the regeneration signaling relay ................................. 59
6.7 Connecting the device error signaling relay................................... 60
6.8 Connecting analog outputs ............................................................ 61
6.9 Connecting the RS485 interface and configuring Modbus (optional) .
63
6.9.1 4-conductor full duplex ............................................................................... 63
6.9.2 2-conductor half duplex.............................................................................. 65
6.9.3 Notes on connecting to the MR sensor bus ............................................... 66
6.9.4 MESSKO® MTRAB® 2.5 ........................................................................... 68
6.9.5 Modbus settings ......................................................................................... 70
6.10 Closing the terminal box ................................................................ 71
6.11 Additional device grounding........................................................... 73
6.12 Dielectric test ................................................................................. 73
6.13 Ground test .................................................................................... 74
7 Commissioning...................................................................76
7.1 Device self test during commissioning........................................... 77
7.2 Adjusting Modbus settings............................................................. 78
8 Operation.............................................................................79
8.1 MTRAB with gamma controller (DB200G only) ............................. 81
9 Error messages and troubleshooting...............................83
9.1 Error messages ............................................................................. 85
9.2 Status messages ........................................................................... 87
9.3 Fuse............................................................................................... 88
9.4 Replacing the battery (CR2032) .................................................... 90
9.5 Contaminated silica gel.................................................................. 91
10 Maintenance, inspection and care ....................................93
10.1 Maintenance .................................................................................. 93