Istec SpeedSys T30

The SpeedSys T30 is a 3-channel speed monitor and switch for rotating machinery. It delivers accurate protection and monitoring to any speed application. Its small size and versatile usability (DIN-rail mount) allows for low-impact installation to enable speed monitoring and protection to a wide range of applications. The T30 is part of the SpeedSys tachometer series with the T10 and T20. 

SpeedSys T10 for 1-channel speed monitoring and switching »
SpeedSys T20 for 2-channel speed monitoring and switching » 

Any speed function

The SpeedSys T30 provides extensive monitoring functions, including reverse rotation, creep, overspeed, underspeed, acceleration, standstill, and dynamic sensor monitoring.

Standalone protection & monitoring

The system has triple redundant inputs for direct sensor connections and digital input signals, a redundant power supply, extensive relay options and Modbus communication.


SpeedSys 200/300 extension

The SpeedSys T30 can also be used as an extension of the SpeedSys 200/300 SIL-rated overspeed protection system for additional relays, and to add monitoring functions and advanced Modbus communication.


The SpeedSys T30 has six relays. The system accepts signal inputs from 3-wire voltage sensors (Hall-effect & proximity), 2-wire voltage sensors (MPU), and digital input signals from speed encoders.

Its compact design ensures a small technical footprint to extend its usability to any speed application.    




The SpeedSys T30 is used as a 3-channel monitoring and switching device for speed conditions on rotating machinery. Typical applications are: 

  • Aeroderivatives
  • Micro turbines
  • Wind turbines
  • Gas- and steam turbines
  • Hydro turbines (Kaplan, Francis, Pelton)
  • Compressors
  • Expanders
  • Marine applications
  • Elevators
  • General automation



Triple redundant input channels

The SpeedSys T30 features triple redundant input channels, making it suitable for speed protection and monitoring.

Multiple input signals

The system can process input signals from 3-wire voltage sensors (Hall-effect & proximity), 2-wire voltage sensors (MPU), and digital input signals from speed encoders.


Industry standard outputs

The SpeedSys T30 connects every common speed function to any industry standard output.


System features

  • 3 independent channels
  • Triple redundant sensor inputs
  • Triple redundant power inputs
  • 6 high speed relays
    • 3x DPST
    • 3x SPST


  • Fast 8 ms hardware response time (relays)
  • Highly accurate analog signal (4-20 mA)
  • Signal filter and line amplifier


SpeedSys is a family of (SIL-rated) protection and monitoring systems for rotating machinery that deliver advanced monitoring and protection on speed functions.

SpeedSys tachometer series (non SIL)


Ask our experts

  • Product Manager SpeedSys