GE Fanuc VersaMax IC200PWR101B Power Supply Module

Technical Dossier

Product Details And Specifications

GE Fanuc VersaMax Series Technical Notes

The GE Fanuc VersaMax series is a modular programmable logic controller (PLC) platform deployed across global heavy industry sectors including petrochemical refineries, nuclear power stations, offshore platforms, and continuous-process chemical plants. The IC200PWR101B is a 24VDC input power supply module within this architecture, providing regulated backplane power to VersaMax I/O and CPU modules. VersaMax installations are documented in facilities operated by ExxonMobil, BASF, Dow Chemical, and comparable tier-1 industrial operators. The platform's distributed I/O capability, combined with its compatibility with GE's PACSystems supervisory layer, has sustained its installed base well into the 2020s despite the series entering its end-of-active-production phase.

The Evolution of VersaMax Architecture

The VersaMax platform was introduced by GE Fanuc Automation in the mid-1990s as a successor to the Series 90 Micro and Series 90-30 distributed I/O nodes. The architecture is built around a passive backplane bus with a proprietary serial communications protocol (Genius Bus and later Profibus DP adapters). Key generational milestones include:

• Generation 1 (IC200 prefix, 1996–2002): Original VersaMax I/O modules with 5VDC and 24VDC backplane power options. The IC200PWR101 (without suffix) was the baseline power supply.
• Generation 2 (IC200 with letter suffixes A/B, 2002–2010): Revised firmware, improved EMC compliance to EN 61131-2, and extended operating temperature range. The IC200PWR101B belongs to this revision tier.
• Generation 3 / PACSystems Migration (2010–present): GE introduced the RX3i and RX7i platforms under the PACSystems brand. VersaMax I/O nodes are retained as remote I/O drops via the IC200BEM003 Ethernet adapter, maintaining backward compatibility with IC200-series modules.

Compatibility note: IC200PWR101B is not interchangeable with IC200PWR102 (120/240VAC input variant). Backplane slot assignment and wiring termination differ between AC and DC power supply variants.

VersaMax Full Catalog & Functionalities (SKU List)

Power Supply Modules

• IC200PWR101B: 24VDC input backplane power supply, 30W output, for VersaMax I/O stations
• IC200PWR102: 120/240VAC input backplane power supply, 30W, universal voltage range
• IC200PWR201: 24VDC redundant power supply module for high-availability configurations

CPU / Controller Modules

• IC200CPUE05: VersaMax Micro CPU, 28 I/O points, 12K word program memory
• IC200CPUE01: VersaMax Micro CPU, 14 I/O points, embedded Ethernet port
• IC200CPU001: VersaMax standalone CPU module, RS-232 serial port, 64K memory
• IC200CPU002: VersaMax CPU with expanded memory, 256K, dual serial ports

Digital Input (DI) Modules

• IC200MDL140: 8-point 24VDC positive logic discrete input module
• IC200MDL240: 16-point 24VDC discrete input, grouped commons
• IC200MDL241: 16-point 120VAC discrete input module, isolated commons
• IC200MDL640: 32-point 24VDC discrete input, high-density format

Digital Output (DO) Modules

• IC200MDL329: 8-point relay output module, 2A per point, Form C contacts
• IC200MDL740: 16-point 24VDC transistor output, sourcing type
• IC200MDL741: 16-point 24VDC transistor output, sinking type
• IC200MDL940: 32-point 24VDC transistor output, high-density

Analog I/O (AI/AO) Modules

• IC200ALG230: 4-channel analog input, 4–20mA / 0–10V configurable
• IC200ALG320: 2-channel analog output, 4–20mA, 12-bit resolution
• IC200ALG430: 8-channel analog input, high-resolution 16-bit

Communications & Network Adapters

• IC200BEM003: VersaMax Ethernet Network Interface Unit (NIU), 10/100 Mbps, Modbus TCP
• IC200BEM104: Profibus DP slave adapter for VersaMax I/O expansion
• IC200GBI001: Genius Bus Interface module for legacy Genius network integration

Sourcing Hard-to-Find & Obsolete VersaMax Parts

GE Fanuc formally transitioned VersaMax to a sustaining engineering status in 2018. Emerson (which acquired GE's automation portfolio) continues to provide limited firmware support but no new hardware production for the IC200 module range. This creates a documented supply gap for operators running VersaMax nodes in long-lifecycle applications (refineries, nuclear auxiliary systems) where platform replacement is not economically or operationally feasible within a 5–10 year horizon.

Quality Control for the VersaMax Range

VersaMax modules present specific test challenges due to their passive backplane architecture and proprietary bus protocol. DriveKNMS applies the following verification procedures to IC200-series units prior to dispatch:

• Backplane bus continuity test: All backplane connector pins verified against GE Fanuc IC200 hardware reference manual pin-out tables. Bent or oxidized pins are cause for rejection.
• Power supply load test (IC200PWR101B specific): Unit is loaded to 100% rated output (30W) for 30 minutes. Output voltage stability must remain within ±2% of 5VDC backplane rail specification.
• Firmware revision verification: Module firmware version is read via GE Proficy Machine Edition and logged. Downlevel firmware is flagged and disclosed to the customer prior to shipment.
• Thermal cycling: Modules are cycled between 0°C and 60°C operating range to screen for cold-solder joint failures common in aged IC200 hardware.
• Isolation resistance test: Input-to-output isolation verified at 500VDC for power supply modules per IEC 61131-2 requirements.