Description
Honeywell 51304501-100
Technical Specifications
- Channel Count: 4 independent pulse counter channels
- Input Signal Type: 5VDC to 24VDC pulse signal, dry contact pulse
- Maximum Pulse Frequency: 10kHz
- Backplane Interface: TDC3000 proprietary backplane bus
- Power Supply: 5VDC and 24VDC from rack backplane
- Operating Ambient Temperature: 0°C to +60°C
- Storage Temperature: -40°C to +85°C
- Relative Humidity: 5% to 90% RH non-condensing
- Mounting Type: Plug-in slot installation on TDC3000 rack
- Certification: UL, CE, RoHS
Functional Features It captures rising edge or falling edge pulse signal according to channel configuration. It accumulates pulse count with 32-bit register for each channel. It supports configurable pulse weight factor to convert pulse count into engineering unit value. It calculates instantaneous pulse rate and filtering for frequency fluctuation. It supports preset total reset function from engineering workstation. It detects input signal loss and pulse signal abnormal fault. It uploads accumulated total, instantaneous rate and channel fault status to TDC3000 main processor. It carries front panel LED indicators for power, run status and fault. It supports hot swap replacement in non-critical rack configuration. It stores scaling factor and edge selection parameter in non-volatile memory.
Application Scenarios Petrochemical plant turbine flow meter pulse accumulation rack Refinery batch metering totalization signal cabinet Chemical plant batch production pulse counting rack Power plant auxiliary water and fuel flow totalizer signal collection Natural gas pipeline pulse flow meter measurement rack
Performance Parameters
- Counter Register Bit Depth: 32-bit
- Mean Time Between Failures: 840000 hours
- Isolation Rating: 1500VAC between field pulse channel and logic circuit
- ESD Immunity: 8kV contact discharge
- Minimum Pulse Width: 50μs
Material Composition FR4 flame retardant conformal coated multilayer PCB High-speed edge capture logic chip array 32-bit counter register array Optocoupler isolation components Input current limiting and surge protection circuit Backplane bus transceiver chip Gold plated edge connector for TDC3000 backplane Metal front panel with extraction handle and LED indicators Removable plastic terminal block for pulse signal wiring
Structural Features Standard TDC3000 paddle card form factor. Front panel integrates removable field wiring terminal block and grouped LED indicators plus extraction handle. Rear gold plated edge connector mates with rack backplane power and control bus. Each pulse channel adopts independent high-speed optocoupler isolation circuit. Anti-key notch prevents reverse insertion into rack slot. Locking clip secures module firmly after installation. Internal PCB layout separates high-speed pulse signal circuit and low-speed backplane bus circuit to avoid signal distortion. Conformal coating fully covers PCB surface to resist dust and moisture.
Working Principle Field pulse signal enters optocoupler isolation circuit and converts into digital edge signal. High-speed logic chip captures signal edge and increments corresponding 32-bit counter register. On-board logic chip multiplies pulse count by configured weight factor to get accumulated engineering value. It calculates instantaneous pulse rate by measuring pulse interval. Data package including accumulated total and instantaneous rate transmits to TDC3000 main processor via backplane bus. Diagnostic circuit monitors pulse signal activity. If no pulse is detected for preset timeout period, signal loss fault flag generates and alarm uploads to operator station.
Installation Requirements Wear anti-static wrist strap before inserting module into vacant rack slot. Lock extraction handle after full seating. Connect shielded twisted pair cable from pulse output instrument to corresponding channel terminals. Configure edge selection, pulse weight factor and timeout parameter in engineering software. Power on rack and verify run LED steady on. Test pulse counting function with signal generator before commissioning. Separate pulse signal cable from high voltage power cable in wiring duct.
Usage Notes Do not apply voltage higher than 30VDC to pulse input terminals. Keep shield wire single point grounding at marshalling cabinet side. Check terminal screw tightness periodically under vibration environment. Reset accumulated total only after confirming batch boundary. Replace module when pulse count loss or frequency reading error occurs.
