BB21x: Backplanes for LB2 IO Modules
BB21A: Backplane for starting a new I/O rack
BB21B: Backplane for I/O in the middle positions
This backplane is used in the middle of a set of connected modules. It can also be used at the end of a set (allows future expansion of I/O set).
BB21C: Backplane for I/O at the end position
This backplane is used at the end of a set of connected modules. It has a connector for the LB2 cable so you can connect it to the next set of I/O modules (or power supply – if required).
BB41x: Backplanes for LB2 Power Supply Modules
BB41A: Backplane for starting expansion I/O with a P/S
BB41B: Backplane for the P/S in the middle position
This backplane is used in the middle of a set of connected modules. It can also be used at the end of a set. This backplane can also used for a redundant power supply module.
BB41E: Backplane for an extra Power Supply Module
This backplane is used when the IO modules need more power than what the previous power supply is supplying (in a large rack of I/O modules). This backplane isolates power from the previous modules ie. a new source of power to modules on its right side.
BB61x: Backplanes for LB2 CPU Modules
BB61A: Backplanes for the CPU start position
BB61B: Backplane for the CPU middle position
This backplane is used in the middle of a set of connected modules. It can also be used at the start position.
BB61R: Backplane for Redundant CPU Module
This backplane is used to connect a redundant CPU module to the adjacent main CPU module. Note: only used when you have the redundant CPU modules side by side.
BB81x: Backplanes for LB2 Communication Modules
BB81A: Backplane for Comms modules in the start position
BB81B: Backplane for Comms modules in the middle
This backplane is used in the middle postion. It can also be used at the start position.
Introduction to LB2 I/O Series
The Brodersen LB2 I/O modules are designed for the RTU32M & RTU32N series. The I/O modules are in two parts, a bottom part containing the backplane bus, and a top part containing the I/O board and logic. All LB2 modules are hot swappable and equipped with a 200 MHz processor to process I/O, handle filtering, SOE, debounce, module clock and general module logic. Diagnostic variables are available for all LB2 I/O modules. Please see the module datasheets for full info.
Module firmware update is handled at the RTU level from the Brodersen WorkSuite.
Use only genuine Brodersen bus cables for connection to Brodersen RTUs and for extension of I/O module blocks. The connection cables for the LB2 backplane bus are designed to meet the power requirements and shielding to run high speed communications. The maximum overall length of a complete system is 30 meters. Each LB2 I/O module & power supply module is calculated as 2 cm. The cables are as the length indicates, e.g. UCC-610/1 count as 100 cm.
The maximum system configuration is 60 I/O modules on one LB2 Bus. If the configuration exceeds 60 I/O modules, an additional CPU is required.