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Basic Information
- Brand & Model: Manufactured by Bently Nevada, Model No. 133396-01.
- Product Series: Part of the 3500 Series, designed for continuous monitoring of rotating and reciprocating machinery.
- Product Type: Overspeed Detection I/O Module, dedicated to detecting machinery overspeed conditions.
- Origin: Made in the USA.
Performance Parameters
Detection Range: Accepts speed pulse input signals, supporting multi-pulse per revolution inputs up to 20kHz. Operational speed range: 20–20,000 rpm.
Accuracy: ±0.1% of full scale, ensuring precise rotational speed measurement.
Response Time: <5 milliseconds (or <10 milliseconds per some sources), enabling rapid reaction to overspeed events.
Electrical Parameters of 133396-01 Overspeed Detection I/O Module
- Input Signal: Accepts a single sensor signal from a proximity probe sensor or magnetic pickup. The input signal voltage range is +10.0V to -24.0V, and signals beyond this range will be limited internally by the module.
- Output Signal: The output signal is 4-20mA or 0-10V, facilitating signal interaction with other devices.
- Power Requirements: Operating voltage is 24V DC; sensor power supply is -24V DC with a maximum of 40mA. Power consumption is typically 8.0 watts, though some sources indicate 1 watt.
Physical Characteristics of 133396-01 Overspeed Detection I/O Module
- Weight: Net weight of the product is 0.45kg, and gross weight is 4kg.
- Dimensions: Packaging dimensions are 30cm x 20cm x 25cm (11.8" x 7.9" x 9.9").
- Sealing Method: Epoxy resin sealing is adopted, providing excellent protective performance.
Environmental Adaptability
- Operating Temperature: The operating temperature range is -30°C to +65°C, with some sources indicating -20°C to +50°C or -40°C to +80°C.
- Storage Temperature: The storage temperature range is generally -40°C to +70°C.
- Humidity Range: 5% to 95% relative humidity (non-condensing).
Functional Features
- System Combination: Can be combined with the 3500/53 module to form a 2-out-of-2 or 2-out-of-3 (recommended) voting system, enhancing system reliability and fault tolerance.
- Signal Processing: Equipped with automatic and manual threshold setting functions. The automatic threshold is applicable to any input above 0.0167Hz (1 revolution per event), with a minimum trigger signal amplitude of 1V peak-to-peak. The manual threshold can be selected by the user within the range of +9.9V DC to -23.9V DC, with a minimum trigger signal amplitude of 500mV peak-to-peak, and the hysteresis value can be configured by the user between 0.2V and 2.5V.
- Status Indication: Module status is displayed via different LED indicators. For example, the OK LED indicates normal operation of the module; the TX/XR LED lights up when the module communicates with other modules; the Bypass LED lights up when the module is in bypass mode; the Test Mode LED lights up in test mode; and the Alarm LED lights up when an alarm occurs in the associated relay.
- Data Acquisition: Supports data collection at preset speeds and time intervals, with programmable acceleration and deceleration intervals. It can start collecting transient data after detecting machine speed within one of two programmable windows.
Industry Standards and Applications
- Industry Standards: Meets the requirements for overspeed protection specified in American Petroleum Institute (API) standards 670 and 612.
- Application Fields: Widely used in overspeed detection and protection of rotating and reciprocating machinery such as gas turbines, steam turbines, compressors, turboexpanders, motors, generators, exciters, gearboxes, pumps, fans, blowers, reciprocating compressors, extruders, and pellet mills. It ensures that equipment operates within a safe speed range, preventing mechanical damage or failures caused by overspeed.
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