Product Short Description
Product Introduction
This is a dual-channel enhanced speed monitoring module for critical rotating machinery protection. It supports simultaneous signal collection and speed monitoring for two independent speed measuring points, provides redundant protection logic, and is widely used on high-value rotating equipment requiring high safety redundancy. It realizes speed calculation, threshold judgment, alarm and trip output for dual channels independently.
Description
- Operating Voltage: 120/240 VAC, 50/60 Hz
- Operating Temperature: 0 °C ~ +65 °C
- Storage Temperature: -40 °C ~ +85 °C
- Relative Humidity: 5% ~ 95% (non-condensing)
- Channel Quantity: Dual independent input channels
- Input Frequency Range: 0.1 Hz ~ 12 kHz
- Output Type: Dual-group relay contact output + isolated analog output
- Mounting Type: 35 mm standard DIN rail
- Rated Power Consumption: ≤ 10 VA
- Dual-channel independent speed acquisition, calculation and monitoring
- Independent over-speed, under-speed and stall protection logic for each channel
- Redundant protection function to improve system operation safety
- Isolated input and output circuits for each channel to avoid mutual interference
- Digital display for real-time speed value of two channels respectively
- Independent LED status indicators for power, operation, alarm and fault of each channel
- Support channel fault self-diagnosis and line break detection
- Speed Measurement Accuracy: ±0.04% full scale
- Signal Response Time: ≤ 4 ms per channel
- Relay Contact Capacity: 250 VAC, 6 A resistive load
- EMC Compliance: IEC 61000-6-2, IEC 61000-6-4
- MTBF: ≥ 500,000 hours
- Continuous Working Mode: 24-hour uninterrupted operation
- Enclosure: Flame-retardant high-strength ABS plastic
- Circuit Substrate: FR-4 high temperature resistant multilayer circuit board
- Terminals: Copper alloy with tin plating, anti-corrosion and conductive stability
- Core Devices: Industrial-grade dual-channel processing chips, isolation amplifiers and relays
- Structural Accessories: Stainless steel fasteners and DIN rail locking clips
- Modular DIN rail structure, dual-channel circuit independent partition layout
- Front panel divided into two independent display and indication areas for two channels
- Separated terminal area for channel 1, channel 2, power supply and output signals
- Reinforced internal fixing structure, anti-vibration for industrial cabinet operation
- Optimized internal air channel for overall heat dissipation
- Fully sealed front panel to prevent dust ingress
Two groups of speed sensor pulse signals are transmitted to two independent input channels of the module. Each channel adopts independent signal conditioning, isolation and frequency-to-speed conversion circuits to calculate real-time rotational speed. The built-in processing unit compares the measured speed with preset threshold values separately. Once any channel triggers over-speed, under-speed or line break fault, the corresponding alarm indicator lights up and the matched relay acts to output trip or interlock signals. Two channels work independently without mutual interference, forming redundant protection for key equipment. All operating data is displayed locally and uploaded to upper control system.
- Dual-channel redundant design, greatly improving safety for critical rotating equipment
- Higher measurement accuracy and wider frequency range than single-channel models
- Independent circuit design for each channel, zero crosstalk
- Integrated line break detection function for sensor and wiring fault pre-judgment
- Standard DIN rail installation, compatible with existing cabinet layout
- Unified parameter configuration mode, convenient for on-site debugging and maintenance
Large steam turbines, gas turbines, large compressors, industrial blowers, mine hoists, power generation units, large rotating production equipment
- Fix firmly on 35 mm standard DIN rail, ensure no shaking under equipment vibration.
- Keep sufficient spacing between modules for heat dissipation.
- Classify wiring strictly by channel number, power supply and signal type.
- Use shielded cables for sensor signal lines and ground the shielding layer single-ended.
- Do not install in areas with direct heat radiation and corrosive media.
- Forbid operation beyond rated electrical and temperature parameters.
- Do not open the enclosure during powered operation.
- Inspect wiring tightness and channel status indicators on a regular basis.
- When replacing sensors or cables, cut off channel power first.
- If one channel fails, stop the corresponding equipment for inspection immediately.
- Keep the module surface clean to guarantee stable heat dissipation.
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