Bachmann LGL Series Modules - LGL.010.044.020.208

Technical Dossier

Product Details And Specifications

Bachmann LGL Series Technical Notes

The Bachmann LGL (Load Group Logic) series represents a core component family within the Bachmann MPC and MPCX distributed control system (DCS) platform. Deployed extensively across global heavy industry — including petrochemical refineries, offshore oil & gas platforms, nuclear power auxiliary systems, and continuous-process chemical plants — the LGL series provides deterministic I/O processing and inter-module communication within Bachmann's rack-based controller architecture. Its modular backplane design allows field engineers to configure mixed analog/digital I/O assemblies without hardware redesign, a critical requirement in facilities where process uptime is measured in years, not quarters. The LGL series is certified for use in safety-instrumented environments and has accumulated a substantial installed base across European and Asian industrial facilities since its introduction in the late 1990s.

The Evolution of LGL Series Architecture

The Bachmann LGL series was introduced as part of the MPC (Modular Process Controller) platform, which Bachmann Electronic GmbH developed to address the demand for high-availability, rack-based control in process industries. Early LGL modules operated on a proprietary parallel backplane bus with fixed slot addressing, limiting hot-swap capability. Subsequent hardware revisions introduced active backplane management, enabling live module replacement without process interruption — a feature that became standard in the MPCX generation.

LGL Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced modules within the Bachmann LGL series. Modules are classified by functional category.

Controller & CPU Modules

• LGL.010.044.020.208: Logic group controller module, 208-point capacity, rack master
• LGL.010.044.020.104: Logic group controller, 104-point I/O capacity, standard rack
• LGL.010.044.010.208: Compact logic controller, single-slot, 208-channel bus master
• LGL.010.020.020.208: Redundant CPU logic module, dual-ported backplane interface

Digital Input (DI) Modules

• LGL.020.010.016.024: 16-channel DI module, 24 VDC, sink/source configurable
• LGL.020.010.032.024: 32-channel DI module, 24 VDC, high-density rack mount
• LGL.020.010.016.120: 16-channel DI module, 120 VAC input, isolated groups
• LGL.020.010.008.048: 8-channel DI module, 48 VDC, intrinsically safe barrier compatible

Digital Output (DO) Modules

• LGL.030.010.016.024: 16-channel DO module, 24 VDC, 0.5 A per channel, short-circuit protected
• LGL.030.010.008.024: 8-channel relay output module, 24 VDC coil, 2 A contact rating
• LGL.030.010.016.120: 16-channel DO module, 120 VAC triac output, zero-cross switching

Analog Input (AI) Modules

• LGL.040.010.008.420: 8-channel AI module, 4–20 mA, 12-bit resolution, HART pass-through
• LGL.040.010.008.010: 8-channel AI module, ±10 V, differential input, 14-bit ADC
• LGL.040.010.004.RTD: 4-channel RTD input module, Pt100/Pt1000, 3-wire compensation
• LGL.040.010.004.TC: 4-channel thermocouple input, types J/K/T/E, cold-junction compensated

Analog Output (AO) Modules

• LGL.050.010.004.420: 4-channel AO module, 4–20 mA, 12-bit DAC, loop-powered diagnostics
• LGL.050.010.004.010: 4-channel AO module, ±10 V, isolated outputs, 14-bit resolution

Communication & Network Adapter Modules

• LGL.060.010.001.PBM: PROFIBUS-DP master adapter, up to 125 slave nodes, 12 Mbit/s
• LGL.060.010.001.CAN: CANopen master module, 127-node capacity, 1 Mbit/s bus rate
• LGL.060.010.001.ETH: Ethernet TCP/IP communication module, 10/100 Mbit/s, Modbus TCP support

Power Supply Modules

• LGL.070.010.001.024: 24 VDC rack power supply module, 10 A output, redundancy-capable
• LGL.070.010.001.048: 48 VDC rack power supply, 5 A, wide-range AC input 85–264 VAC