Bently 3500/53M TSI System Speed Card

The Bently Nevada Electronic Overspeed Detection System for the 3500 Series Machinery Detection System is designed to provide a reliable and fast-response overspeed protection system. Below are the key features and specifications of the 3500/53M module:

Intended Use:

• Specifically designed for overspeed protection.
• Meets the requirements of American Petroleum Institute (API) Standards 670 and 612.

Voting System:

• 3500/53M modules can be combined to form a 2-out-of-2 or a 2-out-of-3 (recommended) voting system.

Rack Requirement:

• Requires the use of a 3500 rack with redundant power supplies.

Inputs:

• Signal: Accepts a single transducer signal from a proximity probe transducer or magnetic pickup.
• Input Signal Range: +10.0 V to -24.0 V.
• Input Impedance: 20 kΩ.
• Power Consumption: 8.0 watts, typical.
• Compatible Transducers: Bently Nevada 3300 series Proximitor, 7200 series Proximitor, and various magnetic pickups.

Outputs:

• Front Panel LEDs:
  • OK LED: Indicates normal operation.
  • TX/XR LED: Indicates communication with other modules in the 3500 rack.
  • Bypass LED: Indicates when the module is in Bypass Mode.
  • Test Mode LED: Indicates when the module is in Test Mode.
  • Alarm LEDs: Indicate an alarm condition with the associated relay.
  • Health LED: Indicates fatal errors or processor errors.
• Buffered Transducer Outputs:
  • Each module has one coaxial connector for buffered output.
  • Output Impedance: 550 Ω.
  • Transducer Power Supply: -24 Vdc, 40 mA maximum.
• Recorder Output:
  • +4 to +20 mA proportional to module full-scale range (rpm).
  • Operation is unaffected by short circuits on recorder output.
  • Application Warning: The +4 to +20 mA recorder output is not to be used as the input to the speed control governor; the emergency overspeed protection system must be separate from the speed controller.

Application Note:

• The recorder output is not intended to be used as the input to the speed control governor; a separate emergency overspeed protection system must be maintained.

This module is an integral part of a comprehensive machinery protection system, providing overspeed detection capabilities with features such as redundancy and communication with other modules in the 3500 rack.