Bosch BGT PC400 Modules

Technical Dossier

Product Details And Specifications

Bosch BGT Series: Comprehensive Module Range and Technical Overview

The Bosch BGT series programmable controllers represent a generation of industrial automation hardware that achieved widespread deployment across heavy process industries — chemical plants, refineries, power generation facilities, and large-scale discrete manufacturing. The BGT PC400, as a core controller unit within this family, was engineered to handle demanding real-time control tasks in environments where system uptime is measured in years, not quarters. Installed base figures across European and Asian industrial sites remain substantial, meaning that despite the series entering its end-of-life phase, the operational demand for spare modules, replacement controllers, and compatible I/O hardware continues to be significant. For plant engineers and maintenance managers responsible for these assets, sourcing verified BGT series components is not a convenience — it is a prerequisite for avoiding forced system migrations that routinely cost seven figures.

The Evolution of BGT Series Architecture

The Bosch BGT platform was developed as part of Bosch's industrial automation division, targeting mid-to-large scale PLC applications requiring modular I/O expansion, deterministic scan cycles, and robust communication interfaces. Early BGT hardware relied on proprietary backplane bus architectures that provided high-speed inter-module communication but created long-term compatibility constraints as industrial networking standards evolved toward PROFIBUS and later PROFINET. The PC400 controller sits within the mature phase of this architecture — it predates the transition to Ethernet-native control platforms and operates within a hardware ecosystem that is no longer in active production. Facilities that standardized on BGT hardware in the 1990s and 2000s now face a binary choice: invest in a full control system migration (with associated re-engineering, re-validation, and production downtime costs), or extend the operational life of existing BGT infrastructure through disciplined spare parts management. The latter strategy, when executed with verified components, consistently delivers a lower total cost of ownership over a 5–10 year horizon.

BGT Series Full Catalog & Functionalities (SKU List)

The following represents a reference catalog of BGT series modules organized by functional category. Each entry reflects hardware that was part of the Bosch BGT ecosystem. Availability status varies — contact DriveKNMS for current stock confirmation.

Controllers & CPUs

• BGT PC400: Central programmable controller unit, rack-mount, real-time scan cycle execution
• BGT PC200: Compact programmable controller, reduced I/O capacity, entry-level BGT platform
• BGT PC600: High-capacity controller variant, extended memory, multi-task processing support
• BGT CPU-01: Standalone CPU module for BGT rack systems, EPROM-based program storage
• BGT CPU-02: Enhanced CPU module with expanded RAM and faster cycle time

Digital Input (DI) Modules

• BGT DI-16: 16-channel 24VDC digital input module, sink/source configurable
• BGT DI-32: 32-channel digital input module, high-density rack installation
• BGT DI-AC16: 16-channel 120/240VAC digital input module for mains-level signal acquisition

Digital Output (DO) Modules

• BGT DO-16: 16-channel 24VDC digital output module, transistor output type
• BGT DO-32: 32-channel digital output, high-density, relay or transistor output options
• BGT DO-AC16: 16-channel relay output module, 240VAC rated contacts

Analog Input (AI) Modules

• BGT AI-08: 8-channel analog input, 4–20mA / 0–10V selectable, 12-bit resolution
• BGT AI-16: 16-channel analog input module, differential input configuration

Analog Output (AO) Modules

• BGT AO-04: 4-channel analog output, 4–20mA, used for valve positioner and drive speed reference
• BGT AO-08: 8-channel analog output module, 12-bit DAC resolution

Communication & Network Adapters

• BGT CM-PB: PROFIBUS-DP communication module, BGT backplane to field network interface
• BGT CM-RS: RS-232/RS-485 serial communication module for legacy HMI and SCADA integration

Power Supply Modules

• BGT PS-24: 24VDC rack power supply module, redundancy-capable
• BGT PS-AC: AC input power supply module, 85–264VAC wide-range input

Sourcing Hard-to-Find & Obsolete BGT Series Parts

Bosch's industrial automation division has undergone significant restructuring over the past two decades, with the BGT product line formally discontinued and support transferred or terminated. This creates a well-documented sourcing problem: OEM channels no longer stock BGT hardware, authorized distributors have exhausted inventory, and the secondary market is populated with unverified, untested, or misrepresented components. DriveKNMS operates as a specialist supplier for exactly this category of hardware. Our BGT series inventory is sourced through controlled channels — decommissioned plant equipment, verified surplus from industrial auctions, and long-term storage stock from original system integrators. Every unit undergoes condition assessment before listing. For plant managers operating BGT-based systems, the practical implication is straightforward: a verified spare BGT PC400 controller held in on-site storage eliminates the single largest risk factor in legacy system operation — an unplanned failure with no replacement available. The cost of one avoided production shutdown typically exceeds the cost of a full spare parts inventory by an order of magnitude.

Quality Control for the BGT Series Range

BGT series hardware presents specific inspection challenges that generic electronics testing does not address. The backplane bus connectors on BGT rack systems are subject to fretting corrosion after years of thermal cycling — a failure mode that produces intermittent faults rather than hard failures, making it difficult to diagnose without targeted inspection. DriveKNMS applies a structured QC process to all BGT modules:

• Visual and mechanical inspection: Board-level examination for physical damage, capacitor bulging, and connector pin condition
• Backplane connector assessment: Pin-by-pin continuity and contact resistance measurement on all edge connectors
• Power rail verification: Confirmation that all internal voltage rails are within specification under load
• Functional power-on test: Where test fixtures are available, modules are powered and basic I/O functionality is verified
• Firmware and hardware revision logging: Hardware revision markings are recorded to ensure compatibility with the customer's existing rack configuration

Customers receive a condition report with each unit. We do not represent refurbished units as new unless they have been fully reconditioned and tested to that standard.

For BGT PC400 availability, full BGT series module inquiries, or bulk spare parts requirements:

• Email: [email protected]
• WhatsApp: +86 18359293191
• Web: driveknms.com