Protection Systems / Single Channel for 1oo1, 1oo2 and 2oo2 solutions

Single Channel Protection Systems for increased safety requirements up to SIL2

We provide our customers with various protection systems for monitoring motors, pumps, and small turbines. These systems may be implemented to monitor any required value of rotational speed, including standstill. These single channel protection systems can be provided with 1oo1, 1oo2 or 2oo2 architecture.

With single channel processing (1oo1) security provision is solely determined by the device configuration. Therefore the use of sensor monitoring with integrated plausibility control is essential. In such a case no redundancy is provided. Should a fault be detected, the entire system will be shut down immediately.

With two channel systems, there is a choice of implementation, dependent upon requirements. In principle, the two devices operate in parallel yet independently. Alarm indication can be realized through the linkage of their status signal outputs.

For 1oo2 processing we have system redundancy with enhanced security through comparative diagnosis. In the case of fault detection, the entire system will be shut down.
With 2oo2 processing, we still have system redundancy but with enhanced availability. Only if both systems fail, the system as a whole will be shut down.

  • E16521D.1 Single Channel Speed Monitor for BRAUN A5S sensors, Overspeed Protection System, Single Channel Protection Systems.

    E16521D.1

    Single Channel Speed Monitor E16521D.1 for increased safety requirements up to SIL2

    • Monitor with sensor monitoring and self-test function with plausibility check
    • 5 digit red LED display
    • Frequency range 0 Hz…50 kHz
    • Signal Input for BRAUN A5S… sensors
    • 1 Analog Output 0/4…20 mA
    • 1 Safety Output as DPST relay
    • 3 Alarm Outputs, one as SPST relay and two as PhotoMOS relays
    • Square wave Pulse Output
    • RS232 Data Interface
    • Maintenance-free during lifetime, therefore minimized TCO
    • Two monitors, suitably configured with their Alarm Outputs linked together, may provide a protection system with 1oo2 or 2oo2 redundancy
    • Increased safety with 1oo2 architecture
    • Maximum availability with 2oo2 architecture
    • SIL2 / IEC 61508:2010 compliant

    Details

  • E16521D.2 Single Channel Speed Monitor for eddy current sensors (EC), Overspeed Protection System.

    E16521D.2

    Single Channel Speed Monitor E16521D.2 for increased safety requirements up to SIL2

    • Monitor with sensor monitoring and self-test function with plausibility check
    • 5 digit red LED display
    • Frequency range 0 Hz…50 kHz
    • Signal Input for Eddy-Current sensors (ECs)
    • 1 Analog Output 0/4…20 mA
    • 1 Safety Output as DPST relay
    • 3 Alarm Outputs, one as SPST relay and two as PhotoMOS relays
    • Square wave Pulse Output
    • RS232 Data Interface
    • Maintenance-free during lifetime, therefore minimized TCO
    • Two monitors, suitably configured with their Alarm Outputs linked together, may provide a protection system with 1oo2 or 2oo2 redundancy
    • Increased safety with 1oo2 architecture
    • Maximum availability with 2oo2 architecture
    • SIL2 / IEC 61508:2010 compliant

    Details

  • E16521D.3 Single Channel Speed Monitor for magnetic pick-up sensors (MPU), Overspeed Protection System.

    E16521D.3

    Single Channel Speed Monitor E16521D.3 for increased safety requirements up to SIL2

    • Monitor with sensor monitoring and self-test function with plausibility check
    • 5 digit red LED display
    • Frequency range 0 Hz…50 kHz
    • Signal Input for Magnetic Pick-Up sensors (MPUs)
    • 1 Analog Output 0/4…20 mA
    • 1 Safety Output as DPST relay
    • 3 Alarm Outputs, one as SPST relay and two as PhotoMOS relays
    • Square wave Pulse Output
    • RS232 Data Interface
    • Maintenance-free during lifetime, therefore minimized TCO
    • Two monitors, suitably configured with their Alarm Outputs linked together, may provide a protection system with 1oo2 or 2oo2 redundancy
    • Increased safety with 1oo2 architecture
    • Maximum availability with 2oo2 architecture
    • SIL2 / IEC 61508:2010 compliant

    Details