ABB Advant MOD 300 Modules: 6637827G1 Transfer Module

Technical Dossier

Product Details And Specifications

ABB Advant MOD 300 Series Technical Notes

The ABB Advant MOD 300 (also referenced under the Advant OCS and Master Piece 200/200 AP platform) is a distributed control system architecture deployed extensively across global heavy process industries including petrochemical refineries, nuclear power generation facilities, pulp and paper mills, and offshore oil and gas platforms. First introduced in the mid-1980s and continuously evolved through the 1990s, the MOD 300 platform established a dominant installed base across North America, Europe, and Asia-Pacific. Its modular backplane architecture, deterministic scan cycle, and redundancy options made it the reference standard for continuous process control in high-criticality environments. As of 2026, the MOD 300 series is in its end-of-life and obsolescence phase; however, the installed base remains substantial, and lifecycle extension support remains a primary procurement requirement for plant operators committed to long-term asset utilization without full DCS migration.

The Evolution of Advant MOD 300 Architecture

The MOD 300 architecture originated from ABB's acquisition and integration of the Combustion Engineering (CE) NETWORK 90 platform in the late 1980s. The initial hardware generation used proprietary backplane buses with parallel I/O addressing. By the early 1990s, ABB introduced the Advant OCS (Open Control System) branding, integrating the MOD 300 hardware with the MasterBus 300 communication protocol and the Advant Fieldbus 100 (AF 100) for field device connectivity. The second-generation hardware introduced enhanced CPU modules with expanded memory maps and faster scan rates. The third generation, aligned with the Advant Controller 450 (AC 450) platform, introduced redundant controller configurations and Ethernet-based supervisory connectivity. Compatibility between generations is constrained by backplane slot addressing and firmware revision levels; cross-generation substitution requires engineering validation. The MOD 300 platform was formally succeeded by the ABB System 800xA architecture, but direct migration paths require hardware gateway modules and software re-engineering, making in-kind spare part sourcing the preferred operational strategy for sites not yet committed to full migration.

Advant MOD 300 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced components within the ABB Advant MOD 300 / Advant OCS ecosystem. Each entry reflects the module's primary functional classification.

Controllers & Processors

• 6637827G1: Transfer Module — backplane data transfer interface for MOD 300 controller chassis inter-module communication.
• 6637793G1: Master Controller Module — primary CPU for MOD 300 process control execution, 32-bit architecture.
• 6637793G2: Master Controller Module (enhanced) — extended memory variant for large loop count applications.
• DSPC110: Processor Module — Advant OCS AC 110 series CPU, used in smaller MOD 300 sub-systems.
• DSPC172: Processor Module — AC 450 series high-performance CPU with redundancy support.

Analog Input / Output Modules

• 6637760G1: Analog Input Module — 16-channel, 4–20 mA, 12-bit resolution, HART-compatible.
• 6637761G1: Analog Output Module — 8-channel, 4–20 mA, isolated outputs for final control elements.
• DSAI130: Analog Input Module — 16-channel differential input, used in Advant OCS field I/O stations.
• DSAO120: Analog Output Module — 8-channel, 0–20 mA / 4–20 mA selectable output.

Digital Input / Output Modules

• 6637762G1: Digital Input Module — 32-channel, 24 VDC, optically isolated, for discrete process signals.
• 6637763G1: Digital Output Module — 16-channel, relay output, rated for 2A per channel.
• DSDI110A: Digital Input Module — 32-channel, 24 VDC, used in S800 I/O and MOD 300 remote I/O stations.
• DSDO110: Digital Output Module — 16-channel transistor output, 24 VDC, 0.5A per channel.

Communication & Network Modules

• DSTC190: MasterBus 300 Communication Module — primary network interface for MOD 300 controller-to-controller communication.
• DSCS140: Serial Communication Module — RS-232/RS-485 interface for third-party device integration.
• 6637800G1: Network Interface Module — Ethernet TCP/IP gateway for MOD 300 supervisory connectivity.

Power Supply Modules

• 6637750G1: Power Supply Module — 24 VDC regulated output, 10A, for MOD 300 I/O chassis.
• DSQC508: Power Distribution Module — redundant power feed selector for high-availability chassis configurations.

Quality Control for the Advant MOD 300 Range

MOD 300 modules present specific test challenges due to their proprietary backplane bus protocol and firmware-dependent initialization sequences. DriveKNMS applies a structured test protocol for all MOD 300 inventory: each module undergoes visual inspection for capacitor condition, connector pin integrity, and PCB corrosion assessment. Functional testing is performed using dedicated MOD 300 chassis test rigs that replicate live backplane communication, verifying module enumeration, data transfer handshake, and I/O channel response. Communication modules are tested for MasterBus 300 frame transmission and error rate. Power supply modules are load-tested at rated current with output ripple measurement. All units are assigned a test status record prior to shipment.