GE Fanuc VersaMax IC200 Series Modules – IC200ALG230

Technical Dossier

Product Details And Specifications

GE Fanuc VersaMax IC200 Series Technical Notes

The GE Fanuc VersaMax IC200 series is a modular programmable logic controller (PLC) platform deployed across global heavy industry sectors including petrochemical refineries, nuclear power generation facilities, offshore oil & gas platforms, and continuous-process chemical plants. Introduced in the mid-1990s as a successor to the Series 90 Micro platform, the IC200 architecture established a distributed I/O standard that remains embedded in thousands of installed base systems worldwide. Its compact rail-mount form factor, deterministic scan-cycle performance, and broad I/O density made it the default automation backbone for mid-scale process control applications requiring sub-100ms response times. Despite GE's divestiture of its automation division to Emerson (now rebranded under the Movicon/PACSystems umbrella), the IC200 installed base continues to operate in facilities with 20+ year asset lifecycles, creating sustained demand for original spare parts, tested replacements, and lifecycle extension support.

The Evolution of IC200 (VersaMax) Architecture

The VersaMax IC200 platform was engineered around a proprietary backplane bus operating at 5VDC logic with a parallel I/O expansion architecture. Early revisions (circa 1996–2001) used the IC200CPU001 and IC200CPU002 processors with RS-232/RS-485 serial communications as the primary network interface. The introduction of the IC200CPU005 and IC200CPUE05 variants added Ethernet TCP/IP capability, enabling integration with SCADA systems and historian platforms without external communication bridges.

The I/O subsystem expanded progressively: initial releases covered discrete 24VDC and 120VAC I/O; subsequent generations added high-density analog modules (12-bit and 15-bit resolution), thermocouple/RTD input modules, and high-speed counter modules for encoder feedback. The IC200 backplane supports up to 8 I/O modules per local rack, with remote expansion via the IC200BEM002 Bus Expansion Module connecting up to 7 remote racks over a proprietary serial link.

IC200 Series Full Catalog & Functionalities (SKU List)

Analog Input Modules

• IC200ALG230: 4-channel, 12-bit analog input, voltage (0–10V) and current (4–20mA) selectable per channel
• IC200ALG231: 8-channel, 12-bit analog input, voltage/current configurable, single-ended
• IC200ALG240: 4-channel, 15-bit high-resolution analog input, differential, ±10V / 0–20mA
• IC200ALG241: 8-channel, 15-bit analog input, differential inputs, enhanced noise rejection
• IC200ALG260: 4-channel thermocouple input module, supports J/K/T/E/R/S/B types, cold-junction compensated
• IC200ALG264: 4-channel RTD input module, supports PT100/PT1000/Ni120, 3-wire configuration

Analog Output Modules

• IC200ALG320: 2-channel, 12-bit analog output, voltage (0–10V) and current (4–20mA) per channel
• IC200ALG321: 4-channel, 12-bit analog output, simultaneous update, short-circuit protected
• IC200ALG322: 4-channel, 15-bit analog output, high-resolution, ±10V / 0–20mA

Discrete Input Modules

• IC200MDL140: 8-point discrete input, 120VAC, isolated, LED status per point
• IC200MDL240: 16-point discrete input, 24VDC positive logic, group isolated
• IC200MDL241: 16-point discrete input, 24VDC negative logic, group isolated
• IC200MDL650: 32-point discrete input, 24VDC, high-density, 2A group fusing

Discrete Output Modules

• IC200MDL330: 8-point relay output, Form C contacts, 2A per point, 240VAC/30VDC rated
• IC200MDL740: 16-point discrete output, 24VDC sourcing, 0.5A per point, electronic short-circuit protection
• IC200MDL741: 16-point discrete output, 24VDC sinking, 0.5A per point
• IC200MDL750: 32-point discrete output, 24VDC sourcing, high-density, 0.25A per point

CPU & Communication Modules

• IC200CPU001: VersaMax CPU, 6K logic/2K I/O, RS-232 serial port, 512KB program memory
• IC200CPU005: VersaMax CPU with embedded Ethernet 10/100 Mbps, SRTP/Modbus TCP, 2MB program memory
• IC200CPUE05: Enhanced CPU, dual Ethernet ports, expanded data table, supports EGD protocol
• IC200BEM002: Bus Expansion Master, connects up to 7 remote VersaMax racks via serial link
• IC200BEM003: Remote Bus Expansion Module (slave), pairs with IC200BEM002

Power Supply Modules

• IC200PWR001: 24VDC input power supply, 30W output, supports up to 8 I/O modules per rack
• IC200PWR002: 120/240VAC input power supply, 30W, universal input range

Quality Control for the IC200 Series Range

The IC200 backplane bus architecture presents specific test challenges: modules communicate via a parallel data bus with strict timing tolerances, meaning a module that passes basic power-on self-test (POST) may still exhibit intermittent faults under loaded backplane conditions. DriveKNMS applies a three-stage test protocol for all IC200 modules:

Stage 1 — Electrical Baseline: DC rail verification (5V ±2%, 24V ±5%), isolation resistance measurement between field-side and logic-side circuits (>10MΩ at 500VDC), and inrush current profiling on power-up.

Stage 2 — Functional Backplane Test: Each module is installed in a live IC200 test rack running a validated CPU firmware version. Discrete I/O modules are cycled through all points at rated voltage/current. Analog modules are tested across the full input/output range with calibrated signal sources, verifying linearity error <0.1% FSR and channel-to-channel isolation.

Stage 3 — Burn-In & Thermal Soak: Modules are operated continuously for 48 hours at 50°C ambient to screen for early-life component failures. Post-burn-in, all analog calibration parameters are re-verified and documented in a module-specific test certificate shipped with each unit.