GE 336A4940CTP2
GE 336A4940CTP2
GE 336A4940CTP2
GE 336A4940CTP2
GE 336A4940CTP2
GE 336A4940CTP2
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336A4940CTP2

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General Electric 336A4940CTP2 is a 4‑slot, dual‑redundant CPCI control enclosure for Mark VIe, providing backplane connectivity and thermal management for UCCx controllers.
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Technical specifications for 336A4940CTP2

  • Manufacturer:
    General Electric
  • Part Number:
    336A4940CTP2
  • Product Family:
    GE Mark VIe Distributed I/O
  • Product Type:
    Control Enclosure
  • Stock:
    2
  • Form Factor:
    6U, 4-slot
  • Power Supply Configuration:
    Dual (version P2), hot-swappable
  • Power Inputs:
    2 (redundant)
  • Power Supply Catalog:
    342A4920 (20–36 V dc input)
  • Cooling:
    Forced air, replaceable fan tray (hot-swap capable)
  • Operating Temperature:
    0 to +65°C (+32 to +149 °F)
  • Storage Temperature:
    -40 to +85°C (-40 to +185 °F)
  • Humidity:
    5% to 95% non-condensing
  • Altitude (Operating):
    0 to 10,000 ft (3,000 m)
  • Altitude (Storage):
    0 to 50,000 ft
  • Airflow Requirement:
    > 400 LFM across heat sink
  • Safety Standards:
    UL 508A, CSA 22.2 No. 14, EN 61010-1
  • Ingress Protection:
    NEMA 1 / IP20
  • Mounting:
    Wall-mount
  • Weight:
    4.84 kg
  • Estimated shipping dimensions:
    13x23.4x39cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Applications Operating Environment Safety & Compliance

Features:

  • Dual Redundant Power Supply for Maximum Uptime
  • Intelligent Cooling with Hot-Swappable Fan Tray
  • Tool-Free Controller Installation with Positive Grounding
General Electric 336A4940CTP2 supports two independent power supply modules operating in parallel with active current sharing. Each supply is hot-swap compliant, allowing replacement without powering down the rack. The dual-supply configuration (version P2) eliminates a single point of failure, making this enclosure ideal for TMR and dual-controller setups where continuous availability is mandatory.

The integrated cooling fan tray maintains airflow greater than 400 linear feet per minute (LFM) across controller heat sinks, preventing thermal derating in high-ambient environments. The fan assembly plugs directly into the backplane and can be replaced without removing rack power. Automatic CPU core temperature monitoring can be configured to trigger a low-power fail-safe state, protecting hardware during cooling system degradation.

Unlike older VME designs, General Electric 336A4940CTP2 features top/bottom injector/ejector tabs for secure seating of UCCx controllers. Tightening the integrated screws provides both mechanical locking and chassis ground connection. The controller will not boot unless these screws are fully tightened—a design that prevents intermittent connection issues common in high-vibration turbine environments.

The 336A4940CTP2 General Electric Control Enclosure may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
General Electric 336A4940CTP2 Control Enclosure Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
General Electric 336A4940CTP2 Control Enclosure

General

  • Manufacturer General Electric
  • Model 336A4940CTP2
  • Condition New Original ready stock
  • Product Family 336A4940CTP1,336A4940CSP2,336A4940DNP517FX
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Gas Turbine Control (Frame 6/7/9):Supports TMR configurations with UCCA controllers for combustion monitoring, compressor stall detection, and fuel valve sequencing.
  • Steam Turbine Overspeed Protection:Hosts UCCC processors running primary overspeed logic and servo valve positioning; dual power supplies ensure trip solenoids remain energized.
  • Aeroderivative Turbines (LM Series):Compact 4-slot design suitable for simplex/dual control in offshore or mechanical-drive applications with high vibration.
  • Balance of Plant (BoP):Powers controllers for HRSG sequencing, water-steam cycle optimization, and generator synchronizing.
  • Wide Temperature Range:Operating from 0°C to +65°C (storage: -40°C to +85°C) with forced-air cooling (>400 LFM) for high-ambient sites.
  • Humidity & Condensation:Rated 5% to 95% non-condensing, suitable for coastal or non-climate-controlled enclosures.
  • Vibration & Seismic:Meets UBC Zone 4 seismic and Bellcore GR-63-CORE shipping standards; installs directly on turbine pedestals.
  • High Altitude:Operates up to 3,000 m (10,000 ft) without derating; cooling system compensates for reduced air density.
  • UL 508A & CSA 22.2:Certified for North American industrial control applications; dual power inputs prevent fault propagation.
  • CE Mark (IEC 61010-1):Compliant with European Low Voltage Directive; meets clearance/creepage for overvoltage category II.
  • Fail-Safe Design:Supports TMR architectures (SIL 3 capable at application layer); hot-swappable supplies eliminate single points of failure.
  • EMC Immunity (IEC 61000-6-2):Withstands 8 kV ESD, 2 kV fast transients, and 10 V/m radiated RF; operates reliably near generators and VFDs.
Description
General Electric 336A4940CTP2 serves as the physical and electrical foundation for GE’s Mark VIe distributed control system. Purpose-built for high-availability environments, this CPCI enclosure houses up to four 6U single-board computers (UCCA/UCCC), enabling simplex, dual, or triple-modular-redundant (TMR) controller configurations. The unit integrates a passive backplane for power distribution and IONet communication, eliminating single points of failure in critical speed control and protection loops.

Engineered for harsh industrial environments, General Electric 336A4940CTP2 supports hot-swappable dual power supply modules (version P2), allowing uninterrupted operation during supply replacement. The integrated cooling fan tray maintains thermal stability across a -30°C to +65°C ambient range, while the wall-mountable chassis meets UL 508A, CSA 22.2, and EN 61010-1 safety standards.

Unlike previous VME-based systems, General Electric 336A4940CTP2 uses injector/ejector mechanisms with screw-lock grounding, ensuring reliable backplane connection and EMC performance. This enclosure is specifically designed to host IS215UCCAH3 (650 MHz Celeron) and IS215UCCCH4 (1.6 GHz Pentium M) controllers, forming the core compute node for gas, steam, and aeroderivative turbine control.
Alternative Names
336A494OCTP2 336A4940CTP1 336A4940CSP2 336A4940DNP517FX 336A4940DNP516TX 336A4940LBP46
Technical notes
General Electric 336A4940CTP2 operates exclusively with Mark VIe UCCx controllers and requires the CMOS battery jumper to be installed before first use; failure to lock the injector/ejector screws will prevent the controller from booting. The enclosure supports dual power supplies for 1+1 redundancy, and its cooling fan is field-replaceable without removing rack power, ensuring continuous operation in critical turbine protection applications.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What controllers are compatible with General Electric 336A4940CTP2, and what are their firmware requirements?
General Electric 336A4940CTP2 is compatible with IS215UCCAH3 (UCCA, 650 MHz Celeron) and IS215UCCCH4 (UCCC, 1.6 GHz Pentium M) controllers. Both require QNX Neutrino operating system and must be configured with a TCP/IP address via ToolboxST over the COM1 serial port before connecting to the Unit Data Highway (UDH). The enclosure does not support legacy Mark VI VME controllers.
What IONet and Ethernet protocols does General Electric 336A4940CTP2 support for third-party integration?
General Electric 336A4940CTP2 routes IONet communications through its backplane, supporting TCP/IP-based EGD (Ethernet Global Data) for CIMPLICITY HMI and Series 90-70 PLCs, plus Ethernet Modbus for third-party DCS integration. The three IONet ports (R, S, T) operate as private, special-purpose Ethernet networks with IEEE 1588 precision time synchronization (±100 µs).
How does General Electric 336A4940CTP2 handle diagnostic monitoring and failure reporting?
General Electric 336A4940CTP2 provides L3DIAG board-level diagnostics, power supply voltage monitoring (26.5V and 18V thresholds), and CPU core temperature reporting via the TEMP_STATUS function block. The enclosure also supports CRC mismatch alarms for flash memory, code segments, and static configuration data, enabling predictive failure analysis.
Can General Electric 336A4940CTP2 be integrated with legacy Mark VI systems or third-party I/O racks?
General Electric 336A4940CTP2 is strictly a Mark VIe component and does not support direct integration with Mark VI VME boards or third-party backplanes. However, it can communicate with third-party devices via Ethernet Modbus or PROFIBUS through compatible I/O packs (e.g., PPRF). Parameter 336A4940CTP2_Mod_Config redundancy setting must be set to Simplex, Dual, or TMR accordingly.
Is General Electric 336A4940CTP2 certified for hazardous area installations (ATEX/IECEx)?
General Electric 336A4940CTP2 carries UL 508A and CSA 22.2 No. 14 (Industrial Control Equipment) certifications, but it is not ATEX/IECEx certified. However, the enclosure is rated for Class I, Division 2 (Groups A, B, C, D) when used with approved power supplies and proper sealing. Always verify local hazardous area codes before installation.

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