Description
1. Product Description
The PEPPERL+FUCHS LB9022S is a redundant base backplane designed for the LB Remote I/O system. It provides the mounting and electrical interconnection structure for communication units, power supplies, and I/O modules in industrial automation applications.
The LB9022S supports redundant fieldbus and power supply arrangements, with up to 22 single-width I/O module slots and five SIL 2 output shutdown segments. Depending on the installed bus coupler, supported communication protocols include PROFIBUS DP, PROFIBUS DP-V1, and Modbus RTU. It is intended for suitable hazardous-area installations, including Zone 2 and Class I, Division 2, subject to system configuration and applicable approvals.
Before installation or replacement, verify the existing backplane version, bus coupler, power supply configuration, I/O module compatibility, and required safety certifications.

LB9022S
2. Product Parameters — Datasheet
Brand: PEPPERL+FUCHS
Model: LB9022S
Series: LB Remote I/O System
Product Name: Redundant Base Backplane
Product Type: Remote I/O system backplane
I/O Module Capacity: Up to 22 single-width or 11 dual-width modules
Communication Protocols: PROFIBUS DP, PROFIBUS DP-V1, or Modbus RTU, depending on the bus coupler
Redundancy: Fieldbus and power supply
Output Shutdown: Five SIL 2 output shutdown segments
Rated Supply Voltage: 24 V DC
Input Voltage Range: 18–32 V DC (SELV/PELV)
Protection Rating: IP20
Dimensions (W × H × D): Approximately 605 × 127 × 80 mm, without modules
Weight: Approximately 2.17 kg
Place of Manufacture: Not independently confirmed; verify the product label
Country of Origin: Verify against the individual unit’s nameplate
Product Status: Verify current production status and supplied-unit condition
Discontinued: Current lifecycle status not confirmed
Installation: Suitable for approved LB Remote I/O configurations; follow the applicable installation manual and hazardous-area requirements
3. Recommended PEPPERL+FUCHS Models
- LB9022E — Redundant base backplane for LB Remote I/O configurations using Modbus TCP/IP.
- LB9023A — Base backplane supporting up to eight single-width I/O modules.
- LB9023E — Base backplane for Modbus TCP/IP applications.
- LB9024S — Extension backplane for expanding compatible LB Remote I/O stations.
- LB9025A — Extension backplane for compatible eight-slot configurations.
- LB9026A — Base backplane supporting up to 16 single-width I/O modules.
- LB9026E — Base backplane for Modbus TCP/IP configurations.
- LB9027A — Extension backplane for compatible LB Remote I/O systems.
- LB9029A — Redundant base backplane for compatible PROFIBUS or Modbus RTU systems.
- LB9035A — FOUNDATION Fieldbus H1 remote I/O backplane.
- LB8105 — Standard PROFIBUS communication unit for compatible LB systems.
- LB8106 — PROFIBUS communication unit for compatible LB Remote I/O configurations.
- LB8107 — Modbus communication unit for compatible LB systems.
- LB8108 — PROFIBUS communication unit with timestamp functionality.
- LB9006 — 24 V DC power supply for compatible LB Remote I/O installations.
These models are related components for system expansion, maintenance, or configuration planning; they are not all direct replacements for the LB9022S. Confirm hardware compatibility and communication requirements before ordering.
