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RZL-05 Series Devices with User Defined Logic

RZL-05 devices with user defined logic are:

  • RZL-05.A - Advanced Protection and Control Devices with User Defined Logic for Substations and Switchgears 1 - 45 kV
  • RZL-05.B - Protection and Control Devices with User Defined Logic for Substations and Switchgears 1 - 45 kV (for Incoming Feeder Bays)
  • RZL-05.F - Protection and Control Devices with User Defined Logic for Substations and Switchgears 1 - 45 kV (for Outgoing Feeder)
  • RZL-05.VT - Protection and Control Devices for Protection and Control of Voltage Transformer

User defined logic is a flexible tool that allows the user to modify or create their own logic of protection functions, automation, monitoring and control functions depending on specific tasks. The user defined logic also allows to program the operation of all discrete inputs, output relays and LEDs.

User defined logic uses standard logic elements ("AND", "OR"), triggers (RS and SR), timers (delay lines, univibrators) and others with the ability to invert inputs and outputs. The user defined logic is used by means of a graphical editor based on the "Monitor" software.

Advantages and features:

  • flexibility in the development of the device logic for any task;
  • simplicity and convenience in creating logic circuits;
  • wide possibilities of using the integrated (built-in) functions of the device;
  • the ability to create your own functions;
  • all inputs and outputs of the device can be freely programmed;
  • flexibility of operation through a wide range of logical elements;
  • great possibilities of adjustment of each element;
  • up to 16 input logic signals are available for the "AND" and "OR" elements;
  • 8 current sensors and 8 voltage sensors are available;
  • each sensor has its own setting and the possibility to install a return factor;
  • 16 settings for the timers are available;
  • it is possible to assign any name of inputs, outputs and settings;
  • possibility to use several blocks to separate functions (e.g. "Inputs" and "Outputs");
  • visual representation of schemes, creation of labels and comments (possibility to adjust and modify them according to the requirements of a specific consumer by making structural or design corrections);
  • device control and editing of the logic of one program;
  • clear and functional editor interface;
  • writing the created diagram in the device with one click;
  • saving and downloading a file of schema to a device or personal computer.

The program is easy to use, and its capabilities are adapted to the needs of different customers.

Fig. 1 shows the simplified stage of maximum current protection created with the help of the defined logic editor.

Fig. 1. Logic editor RZL-05 (maximum current protection function).

Fig. 2 and Fig. 3 show an example of the input unit and output unit. The input unit connects the binary inputs with the functions inputs and the output unit connects the functions outputs with the relays and LEDs.

Fig. 2. Logic editor RZL-05 (linking physical discrete inputs with functions logical inputs).

Fig. 3. Logic editor RZL-05 (linking logical functions outputs to physical device outputs and LEDs).