Parameter Specifications

1. Part Number: 4D33934G01

2. Manufacturer: Emerson Westinghouse

3. Compatible System: Common Q Class 1E Safety Instrument & Control DCS System

4. Matching Accessories: Pulse/Frequency master acquisition boards, 49E-3649 rack backplane 49E-3649, redundant rack power supply 475HP1ENA9GMT

5. PCB Material: Multi-layer isolated V-0 flame-retardant high-Tg FR-4 substrate

6. Dimension & Weight: 145mm × 66mm × 20.6mm; Net weight: 62g

7. Ambient Operating Envelope

   Operating Temp: -25℃ ~ +70℃

   Storage Temp: -50℃ ~ +125℃

   Humidity: 5%–95% RH, non-condensing

8. Power Supply: DC 12V / DC 24V dual adaptive wide-range input

9. Input Channels: 8 fully independent galvanic isolated pulse/frequency counter channels

10. Supported Signal Types

    • NPN/PNP active pulse signal 0–24VDC

    • Sine wave / square wave frequency signal

    • Pulse frequency range: 0.01Hz ~ 100kHz

    • Pulse counting range: 0 ~ 999,999,999 32-bit cumulative count

    • Signal amplitude threshold: Low ≤6V DC, High ≥18V DC

11. Isolation Performance

    Channel-to-backplane isolation: 1500V AC

    Dielectric withstand: 2000V AC / 60s

    Insulation resistance: ≥1200MΩ @ 500VDC

12. EMC Anti-interference Performance

    Power frequency interference attenuation ≥40dB, fully compliant with IEC 61000-6-2 industrial EMC standard

13. Protection & Intelligent Diagnosis Functions

    Per-channel input overcurrent limiting protection

    Bidirectional TVS high-energy surge absorption circuit

    Reverse wiring polarity lockout anti-damage protection

    Real-time full fault detection: signal open-circuit, short-circuit, frequency out-of-range, signal amplitude abnormal, sensor power loss

    Time-stamped fault status + channel number + fault classification uploaded to master controller

14. Mechanical Reliability

    Continuous vibration resistance: 8g (10–150Hz)

    Shock resistance: 25g pulse, duration 11ms

15. Core Feature: Single module hot swappable under energized rack without interrupting safety pulse/frequency measurement loops

16. Certifications: CE, UL508, IEC60204-1, NRC Class 1E nuclear safety qualification

17. Aging Validation Standard: 72-hour full-load high-low temperature cyclic aging test + frequency precision calibration screening

18. Design Service Life: ≥100,000 hours of 24/7 unattended continuous operation

19. Warranty Period: 12-month global unified warranty for original factory modules and certified factory refurbished modules

Application Fields

1. Nuclear Power Plant Common Q Safety I&C Racks

   Dedicated multi-channel pulse/frequency acquisition terminal for reactor auxiliary safety cabinets, collecting main coolant flow pulse transmitters, primary pump rotational speed probes and chemical volumetric dosing pulse meter signals for flow totalization and overspeed trip interlock.

2. AP1000 Nuclear Post-Accident Monitoring System (PAMS)

   Isolated pulse counter board for containment passive cooling flow pulse sensors, emergency pump speed encoders and post-accident medium flow cumulative measurement.

3. Thermal & Hydropower Station Main Control Systems

   Dedicated frequency input module for turbine speed probes, feedwater flow pulse transmitters and generator cooling fan rotational speed monitoring.

4. High-Risk Explosion-Proof Petrochemical DCS Distributed Control System

   Special pulse signal terminal card for process flow pulse meters, agitator speed encoders and high-pressure pump speed sensors in hazardous explosion zones.

5. Offshore Oil & Gas Explosion-Proof Automation Racks

   Isolation frequency acquisition interface for crude pipeline flow pulse transmitters, separator pump speed probes and marine platform chemical dosing pulse meters.

6. Large Diesel Generator Safety Sequential Control Cabinets

   Multi-point pulse input subcard for genset crankshaft speed sensors, cooling water flow pulse meters and fuel metering pulse transmitters for overspeed protection.

7. Municipal Large-Scale Water Treatment Safety Interlock DCS Systems

   High-precision isolated pulse terminal for main water pipeline flow pulse meters, sludge pump speed encoders and chemical dosing flow cumulative measurement.

8. Metallurgy & Cement Kiln Production Lines

   Dedicated high-frequency pulse acquisition module for kiln exhaust gas flow pulse transmitters, raw material feeding speed encoders and cooling fan rotational speed monitoring probes.

Series Unified Iteration Rule (Consistent with full Common Q I/O board product line)

• G01: Standard basic industrial version, 1500V isolation, 40dB EMI attenuation, basic signal fault alarm, no waveform storage

• G02: Reinforced industrial enhanced version, 1800V isolation, 45dB attenuation, optimized high-speed frequency filtering, fast signal drift diagnosis

• G03: Gen3 nuclear high-isolation grade, 2000V isolation, 50dB attenuation, fault waveform capture + non-volatile historical fault storage

• G04: Gen4 flagship ultra-high isolation, 2200V isolation, 55dB attenuation, nanosecond high-precision timestamp, expanded operating temperature range

• G05: Gen5 premium seismic qualified grade, 2500V isolation, 60dB attenuation, anti-loose locking terminal structure, full IEEE 344 seismic certification, extended service life & warranty

• G06: Gen6 extreme super-isolation flagship, 3000V isolation, 65dB attenuation, nuclear anti-radiation component screening, double anti-loose terminals, 15-year power-off fault data retention, full seismic & radiation dual certification