The MSKU-3 industrial controllers - a series of design-arranged, flexibly programmable industrial controllers intended to be used as:

  • subsystems of a lower level of I&C;
  • intelligent autonomous instrumentation and control systems;
  • industrial controllers for fail-safe automation systems of critical facilities.

Functions of MSKU-3:

  • inputting and processing data from the sensors of analog and discrete signals;
  • implementing monitoring and control algorithms, different regulating laws, protections, interlocks, start, and stop of the equipment;
  • generating and outputting analog and discrete signals, control commands;
  • intercommunication with external users via interfaces based on fiber-optical communication links:
  • Ethernet;
  • UART.

Composition of MSKU-3:

Composition of specific MSKU-3 is determined by specific features of its use in the instrumentation and control system.

Components of MSKU-3:

  • KMp microprocessor controllers equipped with ports of Ethernet interface and operated under control of real-time system software (SW) developed at SRPA "Impulse";
  • MSO modules for communication with a facility designated for input/output of discrete and analog signals;
  • BPSv communication modules designated for digital external communications of MSKU-3;
  • MKO equipment monitoring modules designated to monitor operability and state of equipment located in an MSKU-3 cabinet;
  • PKr cross panels designated to connect field cables;
  • PSd connective panels designated for connection of cross panels with modules for communication with a facility and for protection against electromagnetic interference;
  • mounting crates designated to install controllers and modules for communication with a facility.

Key characteristics:

  • possibility of usage of non-redundant MSKU-3 or MSKU-3 with triple redundancy of controllers and modules for communication with a facility;
  • usage of own-developed real-time system SW and ISAPR programming tools verified and tested within systems important for NPP safety;
  • MSKU-3 are registered measuring tools, metrological calibration and attestation are assured with service SW developed at SRPA "Impulse";
  • absence of forced ventilation (cooling is implemented due to a natural air flow through the ventilation grates);
  • high reliability of power supply due to use of a redundant power supply system of a cabinet with both alternating and direct current.

Safety class – 2.
Safety category – А.


Structural schemes of MSKU-3 (non-redundant and with a triple redundancy)


SRPA “Impulse” is a leading Ukrainian designer, manufacturer, and supplier of highly-reliable instrumentation and control systems for nuclear power engineering and railways.
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